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Service bulletin GCUS-3-631

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 id10135432
Published by NHTSA2018-05-07
Manufacturer's numberGCUS-3-631
Manufacturer's date2016-07-29
NHTSA componentELECTRICAL SYSTEM; POWER TRAIN

NHTSA's summary

45250 - Customer Satisfaction Program. Certain vehicles may have a condition in which the shift knob may become detached from the shifter. If this occurs, and the electrical connection is not made, the vehicle provides a ?Service Transmission? driver information center warning message, and also sets numerous diagnostic trouble codes (DTCs) including, but not limited to: P07B4, P07BA, U156D, P17A4, P17A8, and P17A9. Dealers are to inspect and verify the transmission control lever knob is installed correctly and clear all DTCs.

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

Trouble codes named

P07B4, P07BA, P17A4, P17A8, P17A9, U156D

Vehicles listed
CADILLAC XT52017

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

Other bulletins for the same vehicles and component
PI0281L2025-06-12. Service bulletin. This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
25-NA-0872025-05-02. Service bulletin. This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
13-08-116-001K2025-04-25. Service bulletin. The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
24-NA-0982025-04-24. Service bulletin. This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
15-06-03-001F2025-04-15. Service bulletin. This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
21-NA-0432025-02-12. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
09-06-04-026Z2025-01-23. Service bulletin. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
20-NA-1322025-01-18. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
08-07-30-035I2024-12-19. Service bulletin. This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
PIT5962B2024-12-12. Service bulletin. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.