WenmarOpen by Wenmar Pro

Service bulletin 20NA160

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 id10183191
Published by NHTSA2020-11-30
Manufacturer's number20NA160
Manufacturer's date2020-10-16
NHTSA componentEQUIPMENT:ELECTRICAL

NHTSA's summary

This service bulletin provides information for dealers/technicians on Normal Characteristic - Wireless Phone Projection Audio Cuts Out Every 10 Seconds on New/Unsold Vehicles.

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

Equipment and accessories

Vehicles listed
BUICK ENCORE GX2021
CADILLAC CT52021
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC XT42021
CADILLAC XT52021
CADILLAC XT62021
CHEVROLET BLAZER2021
CHEVROLET COLORADO2021
CHEVROLET MALIBU2021
CHEVROLET SILVERADO 15002021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2021
CHEVROLET TAHOE2021
GMC ACADIA2021
GMC CANYON2021
GMC SIERRA 15002021 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002021 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2021
GMC YUKON XL2021

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

Recalls for the same vehicles and component
20221602022-03-31. Accessories
21V4970002021-07-01. EQUIPMENT:OTHER:LABELS
20213652021-06-10. Accessories
21V4400002021-06-10. EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STAND

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
23-NA-0642024-05-02. Service bulletin. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
21-NA-1552024-04-23. Service bulletin. This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector.
20-NA-1322024-04-23. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
17-NA-0522024-04-23. Service bulletin. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.
PIT61382024-04-15. Service bulletin. This Preliminary information communicates and issue with the LED right above the wireless charging pad being inoperative and how to resolve the concern with the LED.
PIC6486E2024-04-15. Service bulletin. This Preliminary information communicates to dealer that GM is aware of the issue and is working on a resolution.
PIT5784C2024-04-15. Service bulletin. This Preliminary information communicates and issue with customers misunderstanding weather they need to bluetooth pair the factory provided headphones.
PIT5832L2024-04-15. 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.
PIT5918A2024-04-15. Service bulletin. This Preliminary information communicates an issue where GM Accessory Illuminated Emblem may cause an issue with the left headlight/turn signal and dealership are to disable the Accessory Illuminated Emblem until a fix is available.
PIT5448J2024-04-15. Service bulletin. This Preliminary Information communication advises the technician with a tip when the vehicle stops running after it has been idling for 2.5 hours. This is normal operation of the vehicle built with regular production code BTM and without Regular Production Option Code AVF. If the vehicle was built with regular production code BTM and AVF only has a 1 hour idle time.