PIP5674A
Service Bulletin Details
Public Details for: PIP5674A
This preliminary information communicates a concern with porosity in the cylinder head casting causing coolant to get into the oil and steps to find and repair it.
- 2023 - 2022 - 2021 - 2020 - 2019 -
Models from 2023
| 2023 BUICK ENCLAVE |
| 2023 CHEVROLET TRAVERSE |
Models from 2022
| 2022 BUICK ENCLAVE |
| 2022 CHEVROLET TRAVERSE |
Models from 2021
| 2021 BUICK ENCLAVE |
| 2021 CHEVROLET TRAVERSE |
Bulletin No.: PIP5674A Published date: 11/10/2022 Preliminary Information PIP5674A Ticking Noise or P0016, P0017, P0018, Or P0019 Set, Oil Very Dark, Possible Coolant Loss. Models Brand: Model: Model Years: VIN: from to Engine: Transmissions: Buick Enclave 2019 - 2023 All All 3.6 LFY All Cadillac XTS 2019 All All 3.6 LFX All Chevrolet Impala 2019 - 2020 All All 3.6 LFX All Chevrolet Traverse 2019 - 2023 All All 3.6 LFY All Involved Region or Country North America Condition A customer may come in with any of the following concerns; SES/MIL on with any of P0016, P0017, P0018 or P0019 setting, ticking noise, coolant loss, or the oil looks very dark or black. Cause The cause for this concern may be coolant contaminating the engine oil due to internal porosity on the cylinder head at the outer bolt area. Correction If you encounter any of the previous concerns, look at the oil to see if it is dark and / or sticky feeling. Remove both camshaft covers for access to the top of the cylinder heads. NOTE: You may need to clean the area if excessive thick oil is present. Pressure test the cooling system with up to 20 PSI while watching the center two head bolt area on the exhaust side of the heads. Observe for 15 to 30 minutes watching for bubbles like the pictures shown below. If no bubbles show then leave the pressure tester on for an additional 24 to 48 hours as we have seen some very small porosity cause this condition. In this case the a ected cylinder head will need to be replaced. 1) Moderate Leak 2) Extreme Leak Locations of actual porosity Warranty Information For vehicles repaired under the Powertrain coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information. Labor Operation 4061770 4061790 Description Cylinder Head Replacement - Right Side Cylinder Head Replacement - Left Side Labor Time Use Published Labor Time Use Published Labor Time Version History Version Modi ed 3 09/04/2019 - Created on. 11/10/2022 - Updated to add model years and instruction to leak test longer if needed. © 2022 General Motors. All Rights Reserved.