TSB: CHEVROLET BLAZER, CAMARO, CANYON, COLORADO, EQUINOX, MALIBU, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SONIC, TERRAIN, TRAX (2020)

Bulletin 20NA012 — March 24, 2020

Bulletin Details

Bulletin ID20NA012
ManufacturerCHEVROLET
ModelsBLAZER, CAMARO, CANYON, COLORADO, EQUINOX, MALIBU, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SONIC, TERRAIN, TRAX
Model Years2020
Date IssuedMarch 24, 2020
Date Added to NHTSAAugust 10, 2020
ComponentELECTRICAL SYSTEM
Vehicles Affected78 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

This Technical bulletin provides service procedure information for dealers/technicians on Radio Software Version V135116 Over-the-Air Update.

Affected Vehicles

MakeModelYearComponent
CHEVROLET BLAZER 2020 110000 ELECTRICAL SYSTEM
CHEVROLET BLAZER 2020 350000 EQUIPMENT
CHEVROLET BLAZER 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET BLAZER 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET BLAZER 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
CHEVROLET BLAZER 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CAMARO 2020 110000 ELECTRICAL SYSTEM
CHEVROLET CAMARO 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CAMARO 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET CAMARO 2020 350000 EQUIPMENT
CHEVROLET CAMARO 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CAMARO 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
GMC CANYON 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC CANYON 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
GMC CANYON 2020 110000 ELECTRICAL SYSTEM
GMC CANYON 2020 350000 EQUIPMENT
GMC CANYON 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC CANYON 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET COLORADO 2020 350000 EQUIPMENT
CHEVROLET COLORADO 2020 110000 ELECTRICAL SYSTEM
CHEVROLET COLORADO 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET COLORADO 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET COLORADO 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
CHEVROLET COLORADO 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET EQUINOX 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET EQUINOX 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
CHEVROLET EQUINOX 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET EQUINOX 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET EQUINOX 2020 350000 EQUIPMENT
CHEVROLET EQUINOX 2020 110000 ELECTRICAL SYSTEM
CHEVROLET MALIBU 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET MALIBU 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
GMC SIERRA 1500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SIERRA 1500 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
GMC SIERRA 1500 2020 110000 ELECTRICAL SYSTEM
GMC SIERRA 1500 2020 350000 EQUIPMENT
GMC SIERRA 1500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SIERRA 1500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC SIERRA 2500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SIERRA 2500 2020 350000 EQUIPMENT
GMC SIERRA 2500 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
GMC SIERRA 2500 2020 110000 ELECTRICAL SYSTEM
GMC SIERRA 2500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC SIERRA 2500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SIERRA 3500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC SIERRA 3500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SILVERADO 1500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SILVERADO 1500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SILVERADO 1500 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
CHEVROLET SILVERADO 1500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET SILVERADO 1500 2020 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2020 350000 EQUIPMENT
CHEVROLET SILVERADO 2500 2020 350000 EQUIPMENT
CHEVROLET SILVERADO 2500 2020 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 2500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET SILVERADO 2500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SILVERADO 2500 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
CHEVROLET SILVERADO 2500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SILVERADO 3500 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SILVERADO 3500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET SONIC 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET SONIC 2020 110000 ELECTRICAL SYSTEM
CHEVROLET SONIC 2020 350000 EQUIPMENT
CHEVROLET SONIC 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SONIC 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
CHEVROLET SONIC 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC TERRAIN 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC TERRAIN 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC TERRAIN 2020 110000 ELECTRICAL SYSTEM
GMC TERRAIN 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC TERRAIN 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
GMC TERRAIN 2020 350000 EQUIPMENT
CHEVROLET TRAX 2020 350000 EQUIPMENT
CHEVROLET TRAX 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET TRAX 2020 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET TRAX 2020 353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
CHEVROLET TRAX 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET TRAX 2020 110000 ELECTRICAL SYSTEM

Related CHEVROLET Recalls

CampaignModelYearComponentSummary
MALIBU 2025 BACK OVER PREVENTION: SENSING SYSTEM:... General Motors, LLC (GM) is recalling certain 2023-2025 Chevrolet Malibu vehi...
MALIBU 2024 BACK OVER PREVENTION: SENSING SYSTEM:... General Motors, LLC (GM) is recalling certain 2023-2025 Chevrolet Malibu vehi...
MALIBU 2023 BACK OVER PREVENTION: SENSING SYSTEM:... General Motors, LLC (GM) is recalling certain 2023-2025 Chevrolet Malibu vehi...
CORVETTE COUPE 2026 EXTERIOR LIGHTING:LIGHTING CONTROL MO... General Motors, LLC (GM) is recalling certain 2026 Chevrolet Corvette ZR1X Co...
CORVETTE COUPE 2026 EXTERIOR LIGHTING:TURN SIGNAL General Motors, LLC (GM) is recalling certain 2026 Chevrolet Corvette ZR1X Co...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized CHEVROLET dealer. Bring this bulletin ID (20NA012) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.