PIP4783B
Service Bulletin Details
Public Details for: PIP4783B
This prelimary information informs the dealer of a diagnotic trouble code that may set due to a failed high pressure fuel pump. Dealers are to check fuel pressure as per current testing outlined in gm service information and replace the fue
- 2017 - 2016 - 2015 - 2014 - 2013 - 2012 - 2011 - 2010 -
Models from 2017
| 2017 BUICK VERANO |
| 2017 CHEVROLET EQUINOX |
| 2017 GMC TERRAIN |
Models from 2012
| 2012 BUICK LACROSSE |
| 2012 BUICK VERANO |
| 2012 CHEVROLET CAPTIVA |
| 2012 CHEVROLET EQUINOX |
| 2012 GMC TERRAIN |
Bulletin No.: PIP4783B Published date: 03/25/2020 Preliminary Information PIP4783B Possible Engine Run-On, Rough Running, And/Or SES Light With A DTC P0172 Models Brand: Model: Model Years: VIN: from to Engine: Transmissions: Buick Lacrosse 2010 - 2012 All All 2.4L LAF, LEA All Buick Regal 2011 All All 2.4L LAF All Buick Verano 2012 - 2017 All All 2.4L LEA All Chevrolet Captiva 2012 - 2016 All All 2.4L LAF, LEA All Chevrolet Equinox 2010 - 2017 All All 2.4L LAF, LEA All GMC Terrain 2010 - 2017 All All 2.4L LAF, LEA All Supersession Statement This PI was superseded to update models and model years. Please discard PIP4783A. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition / Concern Some customers may comment of an SES light on. They may also experience a rough running condition and/or an engine run on condition. Technicians will likely nd a DTC P0172 set. In most cases, the crankcase will have obvious fuel contamination. This may be a result of the high pressure fuel pump leaking fuel into the crankcase when the plunger is depressed. Recommendations / Instructions If this concern is encountered, perform SI diagnosis and repair as necessary. If SI diagnosis does not isolate the cause of this concern, check the low side fuel pressure leakdown with a mechanical gauge as outlined in SI Fuel System Diagnosis. If fuel pressure leakdown is present with the J37287 Fuel Line Shut-o Adapter installed and closed, follow the SI Fuel Pump Replacement Procedure to replace the high pressure fuel pump. Also change the engine oil and lter to complete the repairs. 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. © 2020 General Motors. All Rights Reserved.