PIP5647B
Service Bulletin Details
Public Details for: PIP5647B
This preliminary information communicates a vehicle may have a concernof running poor and stalling. No trouble codes may be set referencing this condition. Fuel trims around -20% may be observed on both banks. Engine oil level will be
- 2021 - 2020 - 2019 - 2018 - 2017 - 2016 -
Models from 2020
| 2020 BUICK ENCORE |
| 2020 CHEVROLET EQUINOX |
| 2020 CHEVROLET MALIBU |
| 2020 CHEVROLET SILVERADO 1500 |
| 2020 GMC SIERRA 1500 |
| 2020 GMC TERRAIN |
Models from 2019
| 2019 BUICK ENCORE |
| 2019 CHEVROLET CRUZE |
| 2019 CHEVROLET EQUINOX |
| 2019 CHEVROLET MALIBU |
| 2019 CHEVROLET SILVERADO 1500 |
| 2019 GMC SIERRA 1500 |
| 2019 GMC TERRAIN |
Models from 2018
| 2018 BUICK ENCORE |
| 2018 CHEVROLET CRUZE |
| 2018 CHEVROLET EQUINOX |
| 2018 CHEVROLET MALIBU |
| 2018 GMC TERRAIN |
Bulletin No.: PIP5647B Published date: 08/20/2020 Preliminary Information PIP5647B Low Mileage Running Poorly With Rich Fuel Trims and/or Crank Case Overfull Models Brand: Model: Model Years: VIN: from to Engine: Transmissions: Buick Encore 2016 - 2020 All All 1.4L LE2 All Chevrolet Cruze 2016 - 2019 All All 1.4L LE2 All Chevrolet Malibu 2016 - 2020 All All 1.5L LFV All Chevrolet Equinox 2018 - 2020 All All 1.5 LYX All Chevrolet Silverado 1500 (New Model) 2019 - 2020 All All 5.3L 6.2L L82 L84 L87 All Chevrolet Suburban 2021 All All 5.3L 6.2L L84 L87 All Chevrolet Tahoe 2021 All All 5.3L 6.2L L84 L87 All GMC Sierra 1500 (New Model) 2019 - 2020 All All 5.3L 6.2L L82 L84 L87 All GMC Terrain 2018 - 2020 All All 1.5L LYX All GMC Yukon 2021 All All 5.3L 6.2L L84 L87 All Involved Region or Country North America Condition A vehicle may have a concern of running poor and stalling. No trouble codes may be set referencing this condition. Fuel trims around -20% may be observed on both banks. Engine oil level will be found over full and have a fuel odor. It will be found that the Engine oil is diluted with fuel. Small gas engines (SGE) May only have the engine oil level over full and have a fuel odor. It will be found that the Engine oil is diluted with fuel. Cause This concern is caused by marshalling the vehicle around the lot before it is sold and/or short driver cycles. Correction: Record the fuel trims and oil level. Change the oil and lter, drive the vehicle and evaluate the fuel trims and record. Note: Do not replace the fuel pump for this condition If the fuel trims return to normal return the vehicle to the customer. If the issue is not corrected by the instructions listed above, follow published SI diagnostics for the concern. Note: During cold starts, it is normal for some fuel to enter the crankcase. When the engine warms up fuel in the crankcase boils o and is reintroduced to the combustion chamber. In extreme cases where the customer drive cycle is short, or excessive engine idling is present, the engine may not be able to reach the temperature required to boil o fuel. To combat this occurrence it may be necessary to minimize idle time in addition to mixing in routine rural/highway drives. Barring the above, more frequent oil changes may be required. This PI will be updated as information is gathered. 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 4086998 Description Change the oil and lter, drive the vehicle and evaluate the fuel trims and record *This is a unique Labor Operation for Bulletin use only. Version History Version 3 Modi ed 05/13/2019 - Created on 04/24/2020 - Updated Model Years. 08/20/2020- to add 2021 T1UX © 2020 General Motors. All Rights Reserved. Labor Time 0.5 Hr.