TSB: CHEVROLET SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500 (2019–2020)

Bulletin 20NA194 — September 18, 2020

Bulletin Details

Bulletin ID20NA194
ManufacturerCHEVROLET
ModelsSIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500
Model Years2019–2020
Date IssuedSeptember 18, 2020
Date Added to NHTSAOctober 26, 2020
ComponentSTRUCTURE:BODY
Vehicles Affected24 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 repair information to correct a customer concern of Hard Tri-Fold tonneau water leaks at the front corners of the pickup box.

Affected Vehicles

MakeModelYearComponent
GMC SIERRA 1500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC SIERRA 1500 2020 350000 EQUIPMENT
GMC SIERRA 1500 2020 162000 STRUCTURE:BODY
GMC SIERRA 2500 2020 162000 STRUCTURE:BODY
GMC SIERRA 2500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC SIERRA 2500 2020 350000 EQUIPMENT
GMC SIERRA 3500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC SIERRA 3500 2020 350000 EQUIPMENT
GMC SIERRA 3500 2020 162000 STRUCTURE:BODY
CHEVROLET SILVERADO 1500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET SILVERADO 1500 2020 350000 EQUIPMENT
CHEVROLET SILVERADO 1500 2020 162000 STRUCTURE:BODY
CHEVROLET SILVERADO 2500 2020 350000 EQUIPMENT
CHEVROLET SILVERADO 2500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET SILVERADO 2500 2020 162000 STRUCTURE:BODY
CHEVROLET SILVERADO 3500 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET SILVERADO 3500 2020 350000 EQUIPMENT
CHEVROLET SILVERADO 3500 2020 162000 STRUCTURE:BODY
GMC SIERRA 1500 2019 356000 EQUIPMENT ADAPTIVE/MOBILITY
GMC SIERRA 1500 2019 350000 EQUIPMENT
GMC SIERRA 1500 2019 162000 STRUCTURE:BODY
CHEVROLET SILVERADO 1500 2019 162000 STRUCTURE:BODY
CHEVROLET SILVERADO 1500 2019 356000 EQUIPMENT ADAPTIVE/MOBILITY
CHEVROLET SILVERADO 1500 2019 350000 EQUIPMENT

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized CHEVROLET dealer. Bring this bulletin ID (20NA194) 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.