PIP4158E
Service Bulletin Details
Public Details for: PIP4158E
This preliminary information communication provides information to the technician about vehicles that have low oil pressure, no oil pressure, and/or engine noise. Technician will need to replace the oil pump, flush the oil cooler lines.
- 2013 - 2012 - 2011 - 2010 - 2009 - 2008 - 2007 -
Models from 2013
Models from 2012
Models from 2011
Models from 2010
Models from 2009
Models from 2008
Models from 2007
Bulletin No.: PIP4158E Date: Apr-2013 Subject: Low Engine Oil Pump Pressure Due To Sticking Oil Pressure Relief Valve Models: 2008-2009 Buick Lacrosse, Allure (Canada Only) 2007-2013 Cadillac CTS-V, Escalade 2007-2013 Chevrolet Avalanche, Corvette, Silverado, Suburban, Tahoe 2007 Chevrolet Monte Carlo SS 2007-2009 Chevrolet Impala SS, Trail Blazer 2009-2013 Chevrolet Colorado 2007-2013 GMC Envoy, Sierra, Yukon 2009-2013 GMC Canyon 2008-2010 Hummer H2 2008-2010 H3 Alpha 2008 Pontiac Grand Prix GXP 2008-2010 Pontiac G8 GT 2007-2009 Saab 97x with the Following Aluminum V8 Engine RPOs: L76, L77, L92, L94, L99, L9H, LC9, LH6, LH8, LH9, LMG, LS2, LS3, LS4, LS7, LS9, LSA, LZ1 This PI was superseded to update model years and add warranty information. Please discard PIP4158D. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition/Concern Some customers may comment on low engine oil pressure, no engine oil pressure, and/or engine noise, which may be the result of a sticking oil pump pressure relief valve. In some instances, this may occur intermittently if the valve frees up when the engine cools down. Recommendation/Instructions If SI diagnosis isolates low mechanical oil pressure at the oil filter housing and oil pressure sensor, replace the oil pump, flush the oil cooler lines (if equipped), clean the inside of the oil pan, change the oil and filter, and re-evaluate the concern. Notice: If an engine noise is noticed after replacing the oil pump, follow the SI diagnosis and repair the engine as necessary. Warranty Information For vehicles repaired under warranty, please use the appropriate warranty labor operation based on the actual cause and repair. Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. 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 1 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 2