PI-0746
Service Bulletin Details
Public Details for: PI-0746
General motors: malfunction indicator lamp (mil) on, poor acceleration, throttle body freezing, multiple dtcs set. Ice deposits and/or oil deposits present in air inlet duct. *js updated 9/19/12. *pe updated 12/5/12. *pe
- 2012 - 2011 - 2010 - 2009 - 2008 - 2007 -
Models from 2012
2012 CHEVROLET TRAVERSE |
Models from 2010
2010 BUICK ENCLAVE |
2010 CHEVROLET MALIBU |
2010 CHEVROLET TRAVERSE |
2010 GMC ACADIA |
2010 SATURN OUTLOOK |
Models from 2009
2009 BUICK ENCLAVE |
2009 CHEVROLET MALIBU |
2009 CHEVROLET TRAVERSE |
2009 GMC ACADIA |
2009 SATURN AURA |
2009 SATURN OUTLOOK |
Models from 2008
2008 BUICK ENCLAVE |
2008 CHEVROLET MALIBU |
2008 GMC ACADIA |
2008 SATURN AURA |
2008 SATURN OUTLOOK |
SB-10044850-1586 File in Section: Service Bulletin Bulletin No.: Date: PI0746A September, 2012 PRELIMINARY INFORMATION Subject: Malfunction Indicator Lamp (MIL) On, Poor Acceleration, Throttle Body Freezing, Multiple DTCs Set, Ice Deposits and/or Oil Deposits Present in Air inlet Duct Models: 2008-2011 Buick Enclave 2007-2011 Chevrolet Malibu 2008-2011 Chevrolet Traverse 2007-2011 GMC Acadia 2007-2010 Saturn OUTLOOK Equipped with 3.6L Engine (RPOs LY7, LLT This PI is being revised to update and add Warranty Information. Please discard PI0746. Condition/Concern Some customers may comment that the malfunction indicator lamp (MIL) is on. They may also comment on poor engine performance and/or reduced acceleration. The reduced engine power will be experienced after initial cold start up or driving in low ambient temperatures. 2837688 Technicians may find the presence of DTCs P0101, P0171, P0172, P0174, P0175, P1516, P2177, P2178, P2179, P2180, P2187, P2188, P2189, and/or P2190 along with either ice or oil deposits in the air inlet duct. Ice formation is caused by condensation freezing at the base of the throttle body with additional collection of ice formation deposits in the air inlet duct. Freezing condensation forms after the vehicle has been driven and then parked in low ambient temperatures. Oil deposits are the collection of the engine vapors, fuel dilution and oil mist at the base of the throttle body with additional formation collecting in the duct. Recommendation/Instructions (2007-2008 Enclave, Malibu, Acadia, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 7. Install the insulated PCV tube. Parts Information (2007-2008 Enclave, Malibu, Acadia, OUTLOOK) Part Number Description 12616913 Tube, PCV (LLT) 12613199 Tube, PCV (LY7) 12647768 Cover, CM/SHF (LH) (LY7) 12641261 Seal, CM/SHR CVR (RH) (LLT, LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation J7575* Description Labor Time Positive Crankcase Ventilation Tube/ Covers/ Seal (LLT) 4.6♦hrs Positive Crankcase Ventilation Tube/ Covers/ Seal (LY7) 3.2♦hrs *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide. Recommendation/Instructions (2009-2010 Enclave, Malibu, Traverse, Acadia, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2009-2010 Enclave, Malibu, Traverse, Acadia, OUTLOOK) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) 12641261 Seal, CM/SHR CVR (RH) (LLT, LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation J7575* Description Labor Time Positive Crankcase Ventilation Tube/ Covers/ Seal (LLT) 4.6 hrs Positive Crankcase Ventilation Tube/ Covers/ Seal (LY7) 3.2 hrs *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide. Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. Recommendation/Instructions (2011 Enclave, Malibu, Traverse, Acadia) 1. Remove the bank2 camshaft cover for servicing of the PCV system. Refer to Camshaft Cover Replacement Left Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 4. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2011 Enclave, Malibu, Traverse, Acadia) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation Description Labor Time J0311 Camshaft Cover Replacement Use Published Labor Operation Time SB-10044850-2033 File in Section: Service Bulletin Bulletin No.: Date: PI0746 June, 2012 PRELIMINARY INFORMATION Subject: Malfunction Indicator Lamp (MIL) On, Poor Acceleration, Throttle Body Freezing, Multiple DTCs Set, Ice Deposits and/or Oil Deposits Present in Air inlet Duct Models: 2008-2011 Buick Enclave 2007-2011 Chevrolet Malibu 2008-2011 Chevrolet Traverse 2007-2011 GMC Acadia 2007-2010 Saturn OUTLOOK Equipped with 3.6L Engine (RPOs LY7, LLT Condition/Concern Some customers may comment that the malfunction indicator lamp (MIL) is on. They may also comment on poor engine performance and/or reduced acceleration. The reduced engine power will be experienced after initial cold start up or driving in low ambient temperatures. 2837688 Technicians may find the presence of DTCs P0101, P0171, P0172, P0174, P0175, P1516, P2177, P2178, P2179, P2180, P2187, P2188, P2189, and/or P2190 along with either ice or oil deposits in the air inlet duct. Ice formation is caused by condensation freezing at the base of the throttle body with additional collection of ice formation deposits in the air inlet duct. Freezing condensation forms after the vehicle has been driven and then parked in low ambient temperatures. Oil deposits are the collection of the engine vapors, fuel dilution and oil mist at the base of the throttle body with additional formation collecting in the duct. Recommendation/Instructions (2007-2008 Enclave, Malibu, Acadia, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 7. Install the insulated PCV tube. Parts Information (2007-2008 Enclave, Malibu, Acadia, OUTLOOK) Part Number Description 12616913 Tube, PCV (LLT) 12613199 Tube, PCV (LY7) 12647768 Cover, CM/SHF (LY7) 12641261 Seal, CM/SHR CVR (RH) (LLT, LY7) Recommendation/Instructions (2009-2010 Enclave, Malibu, Traverse, Acadia, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2009-2010 Enclave, Malibu, Traverse, Acadia, OUTLOOK) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LY7) 12641261 Seal, CM/SHR CVR (RH) (LLT, LY7) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. Recommendation/Instructions (2011 Enclave, Malibu, Traverse, Acadia) 1. Remove the bank2 camshaft cover for servicing of the PCV system. Refer to Camshaft Cover Replacement Left Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 4. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2011 Enclave, Malibu, Traverse, Acadia) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation J7575* Description Labor Time Positive Crankcase Ventilation Tube/ Cover/ Seal (LLT) 2.2 hrs Positive Crankcase Ventilation Tube/ Cover/ Seal (LY7) 1.2 hrs *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide. SB-10044850-2315 File in Section: Service Bulletin Bulletin No.: Date: PI0746C March, 2013 PRELIMINARY INFORMATION Subject: Malfunction Indicator Lamp (MIL) On, Poor Acceleration, Throttle Body Freezing, Multiple DTCs Set, Ice Deposits and/or Oil Deposits Present in Air inlet Duct Models: 2008-2011 Buick Enclave 2007-2011 Chevrolet Malibu 2009-2011 Chevrolet Traverse 2007-2011 GMC Acadia 2007-2010 Pontiac G6 2007-2010 Saturn OUTLOOK Equipped with 3.6L Engine (RPOs LY7, LLT) This PI is being revised to update the Parts Information and Warranty Information. Please discard PI0746B. Condition/Concern Some customers may comment that the malfunction indicator lamp (MIL) is on. They may also comment on poor engine performance and/or reduced acceleration. The reduced engine power will be experienced after initial cold start up or driving in low ambient temperatures. 2837688 Technicians may find DTC s P0101, P0171, P0172, P0174, P0175, P1516, P2177, P2178, P2179, P2180, P2187, P2188, P2189 and/or P2190 along with either ice or oil deposits in the air inlet duct. Ice formation is caused by condensation freezing at the base of the throttle body with additional collection of ice formation deposits in the air inlet duct. Freezing condensation forms after the vehicle has been driven and then parked in low ambient temperatures. Oil deposits are the collection of the engine vapors, fuel dilution and oil mist at the base of the throttle body with additional formation collecting in the duct. Recommendation/Instructions (2007-2008 Enclave, Malibu, Traverse, Acadia, G6, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 7. Install the insulated PCV tube. Parts Information (2007-2008 Enclave, Malibu, Acadia, G6, OUTLOOK) Part Number Description 12616913 Tube, PCV (Enclave, Traverse, Acadia, OUTLOOK) 12616914 Tube, PCV (Malibu, G6) 12647768 Cover, CM/SHF (LH) (LY7) 12641261 Seal, CM/SHR CVR (RH) (LY7) Warranty Information For vehicles repaired under the 5 year/100,000 mile (160,000 km) Powertrain Coverage (Code P) warranty, use: Labor Operation Description Labor Time J7575* Positive Crankcase Ventilation Tube/Covers/Seal (Enclave, Acadia, OUTLOOK) 3.2 hrs Positive Crankcase Ventilation Tube/Covers/Seal (Malibu, G6) 2.3 hrs *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide. Recommendation/Instructions (2009-2010 Enclave, Malibu, Traverse, Acadia, G6, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2009-2010 Enclave, Malibu, Traverse, Acadia, G6, OUTLOOK) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) Part Number Description 12641261 Seal, CM/SHR CVR (RH) (LLT, LY7) Warranty Information For vehicles repaired under the 5 year/100,000 mile (160,000 km) Powertrain Coverage (Code P) warranty, use: Labor Operation Description Labor Time J7575* Positive Crankcase Ventilation Tube/Covers/Seal (Enclave, Acadia, Traverse, OUTLOOK) 3.9 hrs Positive Crankcase Ventilation Tube/Covers/Seal (Malibu, G6) 2.3 hrs *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide. Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. Recommendation/Instructions (2011 Enclave, Malibu, Traverse, Acadia) 1. Remove the bank2 camshaft cover for servicing of the PCV system. Refer to Camshaft Cover Replacement Left Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 4. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2011 Enclave, Malibu, Traverse, Acadia) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation Description Labor Time J0311 Camshaft Cover Replacement Use Published Labor Operation Time SB-10044850-6284 File in Section: Service Bulletin Bulletin No.: Date: PI0746D July, 2013 PRELIMINARY INFORMATION Subject: Malfunction Indicator Lamp (MIL) On, Poor Acceleration, Throttle Body Freezing, Multiple DTCs Set, Ice Deposits and/or Oil Deposits Present in Air inlet Duct Models: 2008-2011 Buick Enclave 2007-2011 Chevrolet Malibu 2009-2011 Chevrolet Traverse 2007-2011 GMC Acadia 2007-2010 Pontiac G6 2007-2009 Saturn AURA 2007-2010 Saturn OUTLOOK Equipped with 3.6L Engine (RPOs LY7, LLT) This PI is being revised to add the Saturn AURA and update the first Parts Information table and Warranty Information. Please discard PI0746C. Condition/Concern Some customers may comment that the malfunction indicator lamp (MIL) is on. They may also comment on poor engine performance and/or reduced acceleration. The reduced engine power will be experienced after initial cold start up or driving in low ambient temperatures. 2837688 Technicians may find DTCs P0101, P0171, P0172, P0174, P0175, P1516, P2177, P2178, P2179, P2180, P2187, P2188, P2189 and/or P2190 along with either ice or oil deposits in the air inlet duct. Ice formation is caused by condensation freezing at the base of the throttle body with additional collection of ice formation deposits in the air inlet duct. Freezing condensation forms after the vehicle has been driven and then parked in low ambient temperatures. Oil deposits are the collection of the engine vapors, fuel dilution and oil mist at the base of the throttle body with additional formation collecting in the duct. Recommendation/Instructions (2007-2008 Enclave, Malibu, Traverse, Acadia, G6, AURA, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 7. Install new PCV foul air tube. Parts Information (2007-2008 Enclave, Malibu, Acadia, G6, AURA, OUTLOOK) Part Number Description 19301853 Tube, PCV (Enclave, Traverse, Acadia, OUTLOOK) 12616914 Tube, PCV (Malibu, G6, AURA) 12647768 Cover, CM/SHF (LH) (LY7) 12641261 Seal, CM/SHR CVR (RH) (LY7) Warranty Information For vehicles repaired under the 5 year/100,000 mile (160,000 km) Powertrain Coverage (Code P) warranty, use: Labor Operation Description Labor Time 4080098* Replace Positive Crankcase Ventilation Tube/Covers/Seal (Enclave, Acadia, OUTLOOK) 3.2 hrs Replace Positive Crankcase Ventilation Tube/Covers/Seal (Malibu, G6, AURA) 2.3 hrs *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide. Recommendation/Instructions (2009-2010 Enclave, Malibu, Traverse, Acadia, G6, 2009 AURA, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2009-2010 Enclave, Malibu, Traverse, Acadia, G6, 2009 AURA, OUTLOOK) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) 12641261 Seal, CM/SHR CVR (RH) (LLT, LY7) Warranty Information For vehicles repaired under the 5 year/100,000 mile (160,000 km) Powertrain Coverage (Code P) warranty, use: Labor Operation Description Labor Time 4080098* Replace Positive Crankcase Ventilation Tube/Covers/Seal (Enclave, Acadia, Traverse, OUTLOOK) 3.9 hrs Replace Positive Crankcase Ventilation Tube/Covers/Seal (Malibu, G6, AURA) 2.3 hrs *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide. Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. Recommendation/Instructions (2011 Enclave, Malibu, Traverse, Acadia) 1. Remove the bank2 camshaft cover for servicing of the PCV system. Refer to Camshaft Cover Replacement Left Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 4. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2011 Enclave, Malibu, Traverse, Acadia) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation Description Labor Time 4060970 Camshaft Cover Replacement Use Published Labor Operation Time SB-10044850-7994 File in Section: Service Bulletin Bulletin No.: Date: PI0746E April, 2014 PRELIMINARY INFORMATION Subject: Malfunction Indicator Lamp (MIL) On, Poor Acceleration, Throttle Body Freezing, Multiple DTCs Set, Ice Deposits and/or Oil Deposits Present in Air inlet Duct Models: 2008-2011 Buick Enclave 2007-2011 Chevrolet Malibu 2009-2011 Chevrolet Traverse 2007-2011 GMC Acadia 2007-2010 Pontiac G6 2007-2009 Saturn AURA 2007-2010 Saturn OUTLOOK 2008–2010 Saturn VUE Equipped with 3.6L Engine (RPOs LY7, LLT) This PI has been revised to add the Saturn VUE and update the Parts Information table and Warranty Information. Please discard PI0746D. Condition/Concern Some customers may comment that the malfunction indicator lamp (MIL) is on. They may also comment on poor engine performance and/or reduced acceleration. The reduced engine power will be experienced after initial cold start up or driving in low ambient temperatures. 2837688 Technicians may find DTCs P0101, P0171, P0172, P0174, P0175, P1516, P2177, P2178, P2179, P2180, P2187, P2188, P2189 and/or P2190 along with either ice or oil deposits in the air inlet duct. Ice formation is caused by condensation freezing at the base of the throttle body with additional collection of ice formation deposits in the air inlet duct. Freezing condensation forms after the vehicle has been driven and then parked in low ambient temperatures. Oil deposits are the collection of the engine vapors, fuel dilution and oil mist at the base of the throttle body with additional formation collecting in the duct. Recommendation/Instructions (2007-2008 Enclave, Malibu, Traverse, Acadia, G6, AURA, OUTLOOK, VUE) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10♦Y (89♦lb♦in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10♦Y (89♦lb♦in). 7. Install new PCV foul air tube. Parts Information (2007-2008 Enclave, Malibu, Acadia, G6, AURA, OUTLOOK, VUE) Part Number Description 19301853 Tube, PCV (Enclave, Traverse, Acadia, OUTLOOK) 12616914 Tube, PCV (Malibu, G6, AURA, VUE) 12647768 Cover, CM/SHF (LH) (LY7) 12641261 Seal, CM/SHR CVR (RH) (LY7) Warranty Information For vehicles repaired under the 5 year/100,000 mile (160,000 km) Powertrain Coverage (Code P) warranty, use: Labor Operation Description Labor Time 4080098* Replace Positive Crankcase Ventilation Tube/Covers/Seal (Enclave, Acadia, OUTLOOK) 3.2 hrs Replace Positive Crankcase Ventilation Tube/Covers/Seal (Malibu, G6, AURA, VUE) 2.3 hrs *This is a unique Labor Operation for Bulletin use only. It will not be published in the Labor Time Guide. Recommendation/Instructions (2009-2010 Enclave, Malibu, Traverse, Acadia, G6, 2009 AURA, OUTLOOK, VUE) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10♦Y (89♦lb♦in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10♦Y (89♦lb♦in). Parts Information (2009-2010 Enclave, Malibu, Traverse, Acadia, G6, 2009 AURA, OUTLOOK, VUE) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) 12641261 Seal, CM/SHR CVR (RH) (LLT, LY7) Warranty Information For vehicles repaired under the 5 year/100,000 mile (160,000 km) Powertrain Coverage (Code P) warranty, use: Labor Operation Description Labor Time 4080098* Replace Positive Crankcase Ventilation Tube/Covers/Seal (Enclave, Acadia, Traverse, OUTLOOK) 3.9 hrs Replace Positive Crankcase Ventilation Tube/Covers/Seal (Malibu, G6, AURA, VUE) 2.3 hrs *This is a unique Labor Operation for Bulletin use only. It will not be published in the Labor Time Guide. Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. Recommendation/Instructions (2011 Enclave, Malibu, Traverse, Acadia) 1. Remove the bank2 camshaft cover for servicing of the PCV system. Refer to Camshaft Cover Replacement Left Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 4. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10♦Y (89♦lb♦in). Parts Information (2011 Enclave, Malibu, Traverse, Acadia) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation Description Labor Time 4060970 Camshaft Cover Replacement Use Published Labor Operation Time SB-10044850-4031 File in Section: Service Bulletin Bulletin No.: Date: PI0746B October, 2012 PRELIMINARY INFORMATION Subject: Malfunction Indicator Lamp (MIL) On, Poor Acceleration, Throttle Body Freezing, Multiple DTCs Set, Ice Deposits and/or Oil Deposits Present in Air inlet Duct Models: 2008-2011 Buick Enclave 2007-2011 Chevrolet Malibu 2009-2011 Chevrolet Traverse 2007-2011 GMC Acadia 2007-2010 Pontiac G6 2007-2010 Saturn OUTLOOK Equipped with 3.6L Engine (RPOs LY7, LLT) This PI is being revised to add the 2007-2010 G6 and update the 2007-2008 Parts Information. Please discard PI0746A. Condition/Concern Some customers may comment that the malfunction indicator lamp (MIL) is on. They may also comment on poor engine performance and/or reduced acceleration. The reduced engine power will be experienced after initial cold start up or driving in low ambient temperatures. 2837688 Technicians may find the presence of DTCs P0101, P0171, P0172, P0174, P0175, P1516, P2177, P2178, P2179, P2180, P2187, P2188, P2189, and/or P2190 along with either ice or oil deposits in the air inlet duct. Ice formation is caused by condensation freezing at the base of the throttle body with additional collection of ice formation deposits in the air inlet duct. Freezing condensation forms after the vehicle has been driven and then parked in low ambient temperatures. Oil deposits are the collection of the engine vapors, fuel dilution and oil mist at the base of the throttle body with additional formation collecting in the duct. Recommendation/Instructions (2007-2008 Enclave, Malibu, Traverse, Acadia, G6, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 7. Install the insulated PCV tube. Parts Information (2007-2008 Enclave, Malibu, Traverse, Acadia, G6, OUTLOOK) Part Number Description 12616913 Tube, PCV (Enclave, Traverse, Acadia, OUTLOOK) 12613199 Tube, PCV (Malibu, G6) 12647768 Cover, CM/SHF (LH) (LLT, LY7) 12641261 Seal, CM/SHR CVR (RH) (LLT, LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation J7575* Description Labor Time Positive Crankcase Ventilation Tube/ Covers/ Seal (LLT) 4.6 hrs Positive Crankcase Ventilation Tube/ Covers/ Seal (LY7) 3.2 hrs *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide. Recommendation/Instructions (2009-2010 Enclave, Malibu, Traverse, Acadia, G6, OUTLOOK) Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. 1. Remove both camshaft covers for servicing of the PCV system. Refer to Camshaft Cover Replacement Left and Right Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank1 camshaft cover gasket. 4. Reassemble the bank1 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). 5. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 6. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2009-2010 Enclave, Malibu, Traverse, Acadia, G6, OUTLOOK) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) Part Number Description 12641261 Seal, CM/SHR CVR (RH) (LLT, LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation Description Labor Time J7575* Positive Crankcase Ventilation Tube/ Covers/ Seal (LLT) 4.6 hrs Positive Crankcase Ventilation Tube/ Covers/ Seal (LY7) 3.2 hrs *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide. Use the following steps for servicing the positive crankcase ventilation (PCV) system for the models listed above. Recommendation/Instructions (2011 Enclave, Malibu, Traverse, Acadia) 1. Remove the bank2 camshaft cover for servicing of the PCV system. Refer to Camshaft Cover Replacement Left Side in SI. 2. Clean the PCV orifice with low VOC brake cleaner. Allow to air dry with compressed shop air. 3. Replace the bank2 camshaft cover and replace the camshaft cover gasket. 4. Reassemble the bank2 camshaft cover. Tighten Tighten the camshaft cover bolts to 10 Y (89 lb in). Parts Information (2011 Enclave, Malibu, Traverse, Acadia) Part Number Description 12647772 Cover, CM/SHF (LH) (LLT) 12647768 Cover, CM/SHF (LH) (LY7) Warranty Information For vehicles repaired under warranty, use: Labor Operation Description Labor Time J0311 Camshaft Cover Replacement Use Published Labor Operation Time