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Service bulletin 21NA035

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 id10191215
Published by NHTSA2021-05-03
Manufacturer's number21NA035
Manufacturer's date2021-03-15
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:SPEED CONTROL

NHTSA's summary

This service bulletin provides information for dealers/technicians on Vehicles that Will Not Hold Set Cruise Control Speed in Enhanced Cruise Control Mode.

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 ENCLAVE2018, 2019, 2020, 2021
BUICK ENVISION2019
CADILLAC ATS2018, 2019
CADILLAC CT62018, 2019, 2020
CADILLAC CTS2017, 2018
CADILLAC ESCALADE2018, 2019
CADILLAC ESCALADE ESV2018, 2019
CADILLAC XT42019, 2020
CADILLAC XT52018, 2019, 2020
CADILLAC XT62020
CADILLAC XTS2018
CHEVROLET BLAZER2019, 2020, 2021
CHEVROLET MALIBU2019
CHEVROLET MALIBU2021
CHEVROLET TRAVERSE2018, 2019
CHEVROLET VOLT2019
GMC ACADIA2018, 2019, 2020, 2021

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
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.
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.
PIC6486E2024-04-15. Service bulletin. This Preliminary information communicates to dealer that GM is aware of the issue and is working on a resolution.
PIC65412024-04-15. Service bulletin. This Preliminary information communicates to the technicians some additional diagnostic tips if they encounter a condition of a dead battery/parasitic drain.
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.
20-NA-1322024-04-05. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
21-NA-0542024-03-29. Service bulletin. This service bulletin provides repair information to correct various functional concerns of the Instrument Cluster and DTC U0155.
23-NA-1032024-03-29. Service bulletin. This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC).
24-NA-0602024-03-29. Service bulletin. This service bulletin provides repair information to correct a customer concerns of Radio Software issues.