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Service bulletin 23-NA-208

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 id10246490
Published by NHTSA2023-12-09
Manufacturer's number23-NA-208
Manufacturer's date2023-11-29
NHTSA componentPOWER TRAIN

NHTSA's summary

This bulletin provides a procedure to replace the rear axle to correct a customer concern of Growl/Howl Type Noise Coming from the Rear of the Vehicle.

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

Transmission and driveline

Vehicles listed
CHEVROLET COLORADO2023
GMC CANYON2023

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
24-NA-0782025-07-08. Service bulletin. This bulletin advises the tech to replace the starter and not the trans if grinding or growling is heard from the transmission area.
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.
23-NA-1852025-04-28. Service bulletin. This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, Engagement/Disengagement/Ratcheting Concerns.
PIP5966A2025-03-02. Service bulletin. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement
PIP5966A2025-03-02. Service bulletin. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement
16-NA-0192025-02-19. Service bulletin. This service bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
24-NA-0782025-01-23. Service bulletin. This bulletin advises the tech to replace the starter and not the trans if grinding or growling is heard from the transmission area.
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.
08-07-30-035I2024-12-19. Service bulletin. This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
PIP60182024-12-05. Service bulletin. This Preliminary information communicates to technicians inspection for an incorrectly machined fluid passage in the valve body causing DTC P0841.