Engine
GMC technical service bulletin PIP5630 for 2019 GMC Sierra 1500, 2019 Chevrolet Suburban and 2019 Chevrolet Express and others.
- Bulletin number
- PIP5630
- Component
- Engine
- Summary
- This Preliminary information communicates A vehicle may have a concern of no oil pressure and/or P0521 set. the releif valve in the pump is sticking or the number 1 main bearing is damaged. Drop oil pan and confirm #1 main is spun or not. If bearings are OK Then change oil pump.
Owners of these vehicles have filed 363 complaints in the engine category.
Vehicles covered
- GMC Sierra 1500 2019 2019
- Chevrolet Suburban 2019 2019
- Chevrolet Express 2019 2019
- Chevrolet Silverado 4500 2019 2019
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