16-NA-085
Service Bulletin Details
Public Details for: 16-NA-085
This informational bulletin provides information on new design cylinder heads.
- 2011 - 2010 - 2009 - 2008 - 2007 -
Models from 2011
| 2011 BUICK ENCLAVE |
| 2011 BUICK LACROSSE |
| 2011 CADILLAC CTS |
| 2011 CADILLAC SRX |
| 2011 CADILLAC STS |
| 2011 CHEVROLET CAMARO |
| 2011 CHEVROLET EQUINOX |
| 2011 CHEVROLET MALIBU |
| 2011 CHEVROLET TRAVERSE |
| 2011 GMC ACADIA |
Models from 2010
Models from 2009
Models from 2008
Models from 2007
| 2007 BUICK LACROSSE |
| 2007 CADILLAC CTS |
| 2007 CADILLAC SRX |
| 2007 CADILLAC STS |
| 2007 GMC ACADIA |
| 2007 PONTIAC G6 |
| 2007 SATURN AURA |
| 2007 SATURN OUTLOOK |
File in Section: Service Bulletin - Bulletin No.: 16-NA-085 Date: June, 2016 INFORMATION Subject: New Design Cylinder Heads Brand: Model: Buick Model Year: VIN: from to Allure (Canada Only) 2007 2011 Buick LaCrosse 2007 2011 Buick Enclave 2008 2011 Cadillac SRX 2007 2011 from Engine: Transmission: to CTS STS Chevrolet Equinox 2008 2011 Chevrolet Malibu 2008 2011 Chevrolet Traverse 2009 2011 Chevrolet Camaro 2010 2011 GMC Acadia 2007 2011 Pontiac G6 2007 2009 Pontiac G8 2008 2009 Pontiac Torrent 2008 2009 Saturn AURA 2007 2009 Saturn OUTLOOK 2007 2010 Saturn VUE 2008 2010 LAU (2.8L) LF1 (3.0L) LFW (3.0L) LLT (3.6L) LY7 (3.6L) Involved Region or Country North America Condition Technicians may have additional questions when replacing cylinder heads with the new saddle cap design head. Cause The camshaft actuator thrust bearings may have caused damage to the cylinder heads, creating debris. Note: The new style saddle cap designed cylinder heads will not work with the 2004-2006 and first design 2007 engines. Correction Caution: If you are using a 2011 new style "saddle cap" cylinder head, thrust washers are not to be used. The use of thrust washers on the new designed cylinder heads can cause damage to the cam shaft actuator, saddle cap and cylinder head. If replacing the cylinder heads for damage caused by the thrust washers, the cylinder heads must be replaced with a newly designed cylinder head. Copyright 2016 General Motors LLC. All Rights Reserved. Page 2 June, 2016 Bulletin No.: 16-NA-085 The new cylinder heads have a saddle cap (2), which incorporated a thrust surface on the saddle cap, has been designed to reduce the tolerance between the camshaft actuator and cylinder head, eliminating the need for a thrust washer. Service Procedure If replacing the previous design cylinder heads with the newly designed heads, perform Cylinder Head Replacement per SI. Parts Information Note: If replacing any of the actuators, the 4 bolt Delphi actuators are compatible to work with the 5 bolt Aisin actuators. Description ACTUATOR, CM/SHF POSN (EXHAUST) 4509309 Previously Designed Cylinder Heads used a thrust washer (1) between the actuators and cylinder heads. ACTUATOR, CM/SHF POSN (INTAKE) Head, Cyl Part Number Qty Refer to the Parts Catalog for Vehicle Application 1 1 1 Warranty Information Labor Operation Description Labor Time 4061790 Cylinder Head Replacement - Left Side 4061770 Cylinder Head Replacement - Right Side Use Published Labor Operation Time 4509294 Version 3 Modified May 9, 2016 – Update the Correction section, added detail to cylinder head graphics and removed the reference to Bulletin 08–06–01–011. June 13, 2016 – Updated procedure and added a note for Actuator compatibility. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION File in Section: Service Bulletin Bulletin No.: 16-NA-085 Date: June, 2016 INFORMATION Subject: New Design Cylinder Heads Brand: Model: Buick Model Year: VIN: from to Allure (Canada Only) 2007 2011 Buick Lacrosse 2007 2011 Buick Enclave 2008 2011 Cadillac SRX 2007 2011 from Engine: Transmission: to CTS STS Chevrolet Equinox 2008 2011 Chevrolet Malibu 2008 2011 Chevrolet Traverse 2009 2011 Chevrolet Camara 2010 2011 GMC Acadia 2007 2011 Pontiac G6 2007 2009 Pontiac GB 2008 2009 Pontiac Torrent 2008 2009 Saturn AURA 2007 2009 Saturn OUTLOOK 2007 2010 Saturn VUE 2008 2010 LAU (2.8L) LF1 (3.0L) LFW (3.0L) LLT (3.6L) LY? (3.6L) Involved Region or Country North America Condition Technicians may have additional questions when replacing cylinder heads with the new saddle cap design head. Cause The camshaft actuator thrust bearings may have caused damage to the cylinder heads, creating debris. Note: The new style saddle cap designed cylinder heads will not work with the 2004-2006 and first design 2007 engines. Correction Caution: If you are using a 2011 new style "saddle cap" cylinder head, thrust washers are not to be used. The use of thrust washers on the new designed cylinder heads can cause damage to the cam shaft actuator, saddle cap and cylinder head. If replacing the cylinder heads for damage caused by the thrust washers, the cylinder heads must be replaced with a newly designed cylinder head. Copyright 2016 General Motors LLC. All Rights Reserved. Page 2 June,2016 Bulletin No.: 16-NA-085 The new cylinder heads have a saddle cap (2), which incorporated a thrust surface on the saddle cap, has been designed to reduce the tolerance between the camshaft actuator and cylinder head, eliminating the need for a thrust washer. Service Procedure If replacing the previous design cylinder heads with the newly designed heads, perform Cylinder Head Replacement per SI. Parts Information Note: If replacing any of the actuators, the 4 bolt Delphi actuators are compatible to work with the 5 bolt Aisin actuators. Description ACTUATOR, CM/SHF POSN (EXHAUST) 4509309 Previously Designed Cylinder Heads used a thrust washer (1) between the actuators and cylinder heads. ACTUATOR, CM/SHF POSN (INTAKE) Head, Cyl Part Number Qty Refer to the Parts Catalog for Vehicle Application 1 1 1 Warranty Information Labor Operation Description Labor Time 4061790 Cylinder Head Replacement - Left Side 4061770 Cylinder Head Replacement - Right Side Use Published Labor Operation Time 4509294 Version 3 Modified May 9, 2016- Update the Correction section, added detail to cylinder head graphics and removed the reference to Bulletin 08-06-01-011. June 13, 2016 - Updated procedure and added a note for Actuator compatibility. GM bulletins are intended for use by professional technicians, NOT a "do-it-xourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide mformat1on that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION