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Service bulletin PIP5508A

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10123256
Published by NHTSA2017-11-14
Manufacturer's numberPIP5508A
Manufacturer's date2017-10-16
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN

NHTSA's summary

This Preliminary Information communication advises the technician that the Product Quality Center has a part restriction for the T87A Transmission Control Module. The dealer technician is advised to call the GM Product Quality Center for further assistance.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline, Software

Vehicles listed
BUICK ENCLAVE2018
BUICK ENVISION2018
BUICK LACROSSE2018
BUICK REGAL2018
CADILLAC ATS2018
CADILLAC CT6 PLUG-IN HYBRID2018 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC CTS2018
CADILLAC ESCALADE2018
CHEVROLET CAMARO2018
CHEVROLET COLORADO2018
CHEVROLET CORVETTE2018
CHEVROLET CRUZE2018
CHEVROLET EQUINOX2018
CHEVROLET EXPRESS2018
CHEVROLET MALIBU2018
CHEVROLET SILVERADO 25002018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2018
CHEVROLET TRAVERSE2018
GMC SAVANA2018
GMC SIERRA 35002018 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2018
GMC YUKON2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
19V6420002019-09-06. ENGINE; ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
20-NA-1322024-04-05. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
PIP5632G2023-01-30. Service bulletin. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
PIP4902Q2023-01-30. Service bulletin. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
PIP58142023-01-30. Service bulletin. This Preliminary information communicates that there some service parts released to dealers missing software.
N1821913002022-05-31. Service bulletin. Customer Satisfaction. In certain vehicles, certain types of off-road use can, in rare cases, cause the vehicle?s roof-rail air bags and seat belt pretensioners to deploy. Dealers will reprogram the sensing and diagnostic module (SDM) with updated software.
174272021-04-30. Service bulletin. Condition Certain 2018 model year GMC Terrain vehicles equipped with a trailer package (RPO V92) may have a trailer turn signal and brake lamp that is inoperative on a connected trailer due to an incorrect calibration. Correction Dealers are to reprogram the body control module.
174192021-04-30. Service bulletin. Condition Certain 2018 model year Chevrolet Silverado HD and GMC Sierra HD vehicles, equipped with 6.6L diesel engine (RPO L5P) and Allison transmission (RPO MW7), may have a condition in which the automatic transmission has rough upshifts. Correction Reprogram the transmission control module (TCM).
174172021-04-30. Service bulletin. Certain 2018 model year Chevrolet Traverse vehicles may have a condition where in the personalization menu, the user can program or disable the auto door lock (ADL) function but cannot not program the auto door unlock (ADU) setting. The required intended settings shown in the Owner’s Manual are opposite, no programming of ADL and programmable ADU. Correction Dealers are to reprogram the body control module (BCM).
17-NA-3422021-04-16. Service bulletin. Service Brake Assist Message displayed on Initial Start Up with DTC P050F Set Condition Some customers may comment that on first start up they receive a "Service Brake Assist Message" displayed. During diagnosis a technician may find DTC P050F set. Cause This may be due to a calibration within the Electronic Brake Control Module (EBCM) not giving the engine enough time to build system vacuum. Correction Reprogram the EBCM with the latest calibrations
17-NA-3302021-04-15. Service bulletin. Normal Characteristic – Push to Talk Button on Steering Wheel Control is Inoperative Condition Some customers may comment on one of the following conditions: 1. The push to talk button on the steering wheel control is inoperative when there is no phone device is paired with the vehicle. Note: The push to talk button, however, still answer OnStar hands-free calls (if equipped). 2. Cannot delete USB names from the radio display. The Radio displays the names of USB drives that were previously installed and have been removed. Cause This condition may be due to one of the following: Condition 1, no action is required. It is normal operation if you do not have a phone device paired with the vehicle via Bluetooth. Condition 2, the radio displays the last 3 sources used for the radio like AM, FM, XM, Bluetooth device streaming music or USB drive. The sources are highlighted/actively listed even after the source is removed from the system. To delete the name of the USB from the radio display, push the more button on the display and select another radio sources like AM, FM or XM. Note: The radio will show the last 3 audio sources after removed, as shown in the illustration above Correction DO NOT replace the radio assembly as this is a normal design characteristic for the infotainment system.