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Service bulletin 18NA134

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 id10137595
Published by NHTSA2018-05-21
Manufacturer's number18NA134
Manufacturer's date2018-04-26
NHTSA componentEQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

NHTSA's summary

This technical bulletin provides a procedure to test the radios receiver if certain XM channels cut out (mutes) depending on location 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

Equipment and accessories

Vehicles listed
BUICK ENCLAVE2018
BUICK ENCORE2018
BUICK ENVISION2018
BUICK LACROSSE2018
BUICK REGAL2018
CADILLAC ESCALADE2018
CADILLAC ESCALADE ESV2018
CADILLAC XT52018
CHEVROLET CAMARO2018
CHEVROLET COLORADO2018
CHEVROLET CORVETTE2018
CHEVROLET CRUZE2018
CHEVROLET EQUINOX2018
CHEVROLET IMPALA2018
CHEVROLET MALIBU2018
CHEVROLET SILVERADO 25002018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2018
CHEVROLET TAHOE2018
CHEVROLET TRAVERSE2018
CHEVROLET VOLT2018
GMC ACADIA2018
GMC CANYON2018
GMC SIERRA 25002018 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2018 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2018
GMC YUKON2018
GMC YUKON XL2018

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

Recalls for the same vehicles and component
21V4960002021-07-01. EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER

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
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.
PIT5992A2024-04-15. Service bulletin. This preliminary information discusses a condition that may arise from the drivers window switch sending an errant message causing the vehicle to enter manual fob learn mode.
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.
17-NA-2162024-04-05. Service bulletin. This service bulletin provides repair information to correct a customer concern of the convertible top back glass separating from top cover material.
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).
17-NA-3022024-03-28. Service bulletin. This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap area.
24-NA-0542024-03-20. Service bulletin. This service bulletin provides information on No Heated Seats or Heated Steering Wheel During Remote Start.
11-00-89-005X2024-03-19. Service bulletin. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).