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TSB: BUICK BRAVADA, ENVOY, ENVOY XL, ENVOY XUV, GMC, RAINIER, SSR, SUBURBAN, TRAILBLAZER, TRAILBLAZER EXT (2002–2004)

Bulletin 14423A — December 1, 2015

Bulletin Details

Bulletin ID14423A
ManufacturerBUICK
ModelsBRAVADA, ENVOY, ENVOY XL, ENVOY XUV, GMC, RAINIER, SSR, SUBURBAN, TRAILBLAZER, TRAILBLAZER EXT
Model Years2002–2004
Date IssuedDecember 1, 2015
Date Added to NHTSAJanuary 16, 2024
ComponentFUEL SYSTEM, GASOLINE
Vehicles Affected44 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

14423A - SPECIAL COVERAGE (REVISED PART INFORMATION). SOME 2004 MODEL YEAR BUICK RAINIER, 2003-2004 MODEL YEAR CHEVROLET SSR, 2002-2004 MODEL YEAR CHEVROLET TRAILBLAZER, CHEVROLET TRAILBLAZER EXT, GMC ENVOY, GMC ENVOY XL, AND OLDSMOBILE BRA

Affected Vehicles

MakeModelYearComponent
OLDSMOBILE BRAVADA 2004 070000 FUEL SYSTEM, GASOLINE
OLDSMOBILE BRAVADA 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
GMC ENVOY 2004 070000 FUEL SYSTEM, GASOLINE
GMC ENVOY XL 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
GMC ENVOY XL 2004 070000 FUEL SYSTEM, GASOLINE
GMC ENVOY XL 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
GMC ENVOY XUV 2004 070000 FUEL SYSTEM, GASOLINE
GMC ENVOY XUV 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
GMC ENVOY XUV 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
BUICK RAINIER 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
BUICK RAINIER 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET SSR 2004 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SSR 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET SUBURBAN 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET TRAILBLAZER 2004 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TRAILBLAZER 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET TRAILBLAZER EXT 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET TRAILBLAZER EXT 2004 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET TRAILBLAZER EXT 2004 070000 FUEL SYSTEM, GASOLINE
OLDSMOBILE BRAVADA 2003 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
OLDSMOBILE BRAVADA 2003 070000 FUEL SYSTEM, GASOLINE
GMC ENVOY 2003 070000 FUEL SYSTEM, GASOLINE
GMC ENVOY XL 2003 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
GMC ENVOY XL 2003 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
GMC ENVOY XL 2003 070000 FUEL SYSTEM, GASOLINE
GMC ENVOY XUV 2003 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET SSR 2003 070000 FUEL SYSTEM, GASOLINE
CHEVROLET SSR 2003 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET SUBURBAN 2003 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET TRAILBLAZER 2003 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET TRAILBLAZER 2003 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TRAILBLAZER EXT 2003 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET TRAILBLAZER EXT 2003 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TRAILBLAZER EXT 2003 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
OLDSMOBILE BRAVADA 2002 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
OLDSMOBILE BRAVADA 2002 070000 FUEL SYSTEM, GASOLINE
GMC ENVOY 2002 070000 FUEL SYSTEM, GASOLINE
GMC ENVOY XL 2002 070000 FUEL SYSTEM, GASOLINE
GMC ENVOY XL 2002 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
GMC ENVOY XL 2002 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET TRAILBLAZER 2002 070000 FUEL SYSTEM, GASOLINE
CHEVROLET TRAILBLAZER EXT 2002 091100 FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
CHEVROLET TRAILBLAZER EXT 2002 070000 FUEL SYSTEM, GASOLINE
GMC GMC — 074000 FUEL/PROPULSION SYSTEM (PWS)

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized BUICK dealer. Bring this bulletin ID (14423A) 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.

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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.

Back to All TSBs