TSB: CHEVROLET 3500, 4500, 4500HD, 4500XD, 5500HD, 5500XD, CAMARO, CORVETTE, EXPRESS, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SUBURBAN, TAHOE (2014–2022)

Bulletin 20-NA-038 — March 16, 2022

Bulletin Details

Bulletin ID20-NA-038
ManufacturerCHEVROLET
Models3500, 4500, 4500HD, 4500XD, 5500HD, 5500XD, CAMARO, CORVETTE, EXPRESS, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SUBURBAN, TAHOE
Model Years2014–2022
Date IssuedMarch 16, 2022
Date Added to NHTSAMarch 31, 2022
ComponentENGINE AND ENGINE COOLING
Vehicles Affected138 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 informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence.

Affected Vehicles

MakeModelYearComponent
CHEVROLET 3500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET 3500 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 4500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET 4500 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 4500HD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET 4500HD 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 4500XD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET 4500XD 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 5500HD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET 5500HD 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 5500XD 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET 5500XD 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CAMARO 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CORVETTE 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET CORVETTE 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET EXPRESS 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET EXPRESS 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 1500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 2500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 3500 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SUBURBAN 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TAHOE 2022 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2022 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 3500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET 3500 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 4500HD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET 4500HD 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 4500XD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET 4500XD 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 5500HD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET 5500HD 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 5500XD 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET 5500XD 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CAMARO 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CORVETTE 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET CORVETTE 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET EXPRESS 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET EXPRESS 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 1500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 2500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 3500 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SUBURBAN 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TAHOE 2021 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2021 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 3500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET 3500 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 4500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET 4500 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 4500HD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET 4500HD 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 4500XD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET 4500XD 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 5500HD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET 5500HD 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET 5500XD 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET 5500XD 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CAMARO 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CORVETTE 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET CORVETTE 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET EXPRESS 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET EXPRESS 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 1500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 2500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 2500 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 3500 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 3500 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SUBURBAN 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TAHOE 2020 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2020 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CAMARO 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2019 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CORVETTE 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET CORVETTE 2019 070000 FUEL SYSTEM, GASOLINE
CHEVROLET EXPRESS 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET EXPRESS 2019 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 1500 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2019 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SUBURBAN 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2019 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TAHOE 2019 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2019 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CAMARO 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2018 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CORVETTE 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET CORVETTE 2018 070000 FUEL SYSTEM, GASOLINE
CHEVROLET EXPRESS 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET EXPRESS 2018 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 1500 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2018 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SUBURBAN 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2018 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TAHOE 2018 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2018 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CAMARO 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2017 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CORVETTE 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET CORVETTE 2017 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 1500 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2017 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SUBURBAN 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2017 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TAHOE 2017 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2017 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CAMARO 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET CAMARO 2016 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CORVETTE 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET CORVETTE 2016 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 1500 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2016 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SUBURBAN 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2016 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TAHOE 2016 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2016 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CORVETTE 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET CORVETTE 2015 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 1500 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2015 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SUBURBAN 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET SUBURBAN 2015 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TAHOE 2015 060000 ENGINE AND ENGINE COOLING
CHEVROLET TAHOE 2015 070000 FUEL SYSTEM, GASOLINE
CHEVROLET CORVETTE 2014 060000 ENGINE AND ENGINE COOLING
CHEVROLET CORVETTE 2014 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SILVERADO 1500 2014 060000 ENGINE AND ENGINE COOLING
CHEVROLET SILVERADO 1500 2014 070000 FUEL SYSTEM, GASOLINE

Related CHEVROLET Recalls

CampaignModelYearComponentSummary
SILVERADO 3500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 2500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 1500 2018 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 1500 2018 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 2500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized CHEVROLET dealer. Bring this bulletin ID (20-NA-038) 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.