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Service bulletin PIP5965

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 id10251727
Published by NHTSA2024-03-18
Manufacturer's numberPIP5965
Manufacturer's date2024-02-29
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

This Preliminary information communicates to technicians that a calibration to correct a P138C is forthcoming and to not attempt repairs.

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, Software

Trouble codes named

P138C

Vehicles listed
CADILLAC ESCALADE2023, 2024
CHEVROLET SUBURBAN2023, 2024
CHEVROLET TAHOE2023, 2024
GMC YUKON2023
GMC YUKON XL2023, 2024

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
20-NA-1322024-04-05. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
23-NA-1432023-10-18. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Radio Software Version Y169– Multiple Updates for IOK.
23-NA-1182023-10-18. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Radio Software Version Y168 – Multiple Updates for IOK.
N23-2411562023-08-25. Service bulletin. '(There may be future updates under this same release number.) Your vehicle keeps getting better. This vehicle software update includes the following: Refinements • Updates made to the overall vehicle software update process. Better Never Stops™
PIT5762F2023-02-13. Service bulletin. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues between the modules.
PIT5832D2022-12-12. Service bulletin. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
PIT5832C2022-10-17. Service bulletin. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.