PIP3330D
Service Bulletin Details
Public Details for: PIP3330D
This preliminary information document advises the dealer that there is a software update available for the powertrain control module to address diagnostic trouble code P0171. If the software update does not correct the condition, the docime
Models from 2005
| 2005 CHEVROLET TRAILBLAZER |
| 2005 GMC ENVOY |
Bulletin No.: PIP3330D Published date: 05/9/2019 Preliminary Information PIP3330D SES Light Due to a P0171 DTC - Reprogram PCM Models Brand: Model: Model Years: VIN: from to Engine: Transmissions: Buick Ranier 2004 - 2005 All All 4.2 LL8 All Chevrolet Trailblazer 2004 - 2005 All All 4.2 LL8 All GMC Envoy 2004 - 2005 All All 4.2 LL8 All Oldsmobile Bravada 2004 All All 4.2 LL8 All Supersession Statement This PI was superseded to update Recommendations/Instructions. Please discard PIP3330C. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition / Concern Under certain driving conditions, a SES light may be experienced due to a P0171 DTC. Recommendations / Instructions If the SI diagnostics do not isolate a cause for the P0171, reprogram the PCM with the latest TIS2000 calibrations. PCM calibrations are now available that may address certain P0171 DTCS. For 2004 model year vehicles, the updated TIS2000 calibration for P0171 DTCS is titled "Calibration to address coast down idle roughness and revise cruise control operation with less vehicle speed deviation. Also contains diagnostic enhancements for DTC P0171". This calibration was released in TIS2000 Version 2.0, which became available to dealers on 2/7/2005. For 2005 model year vehicles, the updated TIS2000 calibration for P0171 DTCS is titled "New calibration to ensure proper catalyst monitoring at idle. Also includes diagnostic enhancements for DTC P0171." This calibration was released in TIS2000 Version 5.5, which became available to dealers on 5/16/2005. The above calibrations, or any that follow, are designed to address certain P0171 DTCS. If the updated PCM calibrations do not repair a P0171 and the SI diagnostics do not isolate a cause for the DTC, clean the fuel injectors by following bulletin 03-06-04-030H. If this repairs the P0171, use of a top tier filling station should be encouraged to prevent a possible reoccurrence. Please review 04-06-04-047M for more information on top tier filling stations. If a top tier filling station is not used, maintenance cleaning of the fuel injectors may be necessary to prevent a reoccurrence. Please review 04-06-04-051E for more details on maintenance cleaning of the fuel injectors. 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. © 2019 General Motors. All Rights Reserved.