TSB 16-NA-383 — Buick, Cadillac, Chevrolet, GMC, Pontiac and Saturn Service bulletin

16-NA-383 is a service bulletin on file with NHTSA for 31 Buick, Cadillac, Chevrolet, GMC, Pontiac and Saturn models, 2000–2009 model years, filed and re-filed as 2 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

2Documents filed
31Vehicles named
10Model years

Vehicles and model years 16-NA-383 names

VehicleModel years
Buick LaCrosse 2005, 2006
Cadillac CTS 2003, 2004, 2005, 2006
Cadillac Escalade 2000, 2001, 2002, 2003, 2004, 2005, 2006
Cadillac SRX 2004, 2005, 2006
Chevrolet Avalanche 2002, 2003, 2004, 2005, 2006
Chevrolet Aveo 2004, 2005, 2006, 2007, 2008, 2009
Chevrolet Blazer 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Chevrolet Camaro 2000, 2001, 2002
Chevrolet Cobalt 2000, 2002, 2005, 2006
Chevrolet Colorado 2004, 2005, 2006
Chevrolet Corvette 2000, 2001, 2002, 2003, 2004, 2005, 2006
Chevrolet Equinox 2005, 2006
Chevrolet HHR 2006
Chevrolet Impala 2000, 2001, 2002, 2003, 2004, 2005, 2006
Chevrolet Malibu 2000, 2001, 2002, 2003, 2004, 2005, 2006
Chevrolet S10 2000, 2001, 2002, 2003, 2004, 2006
Chevrolet Silverado 1500 2000, 2001, 2002, 2003, 2004, 2005, 2006
Chevrolet Silverado 2500 2000, 2001, 2002, 2003, 2004, 2005, 2006
Chevrolet Suburban 2000, 2001, 2002, 2003, 2004, 2005, 2006
Chevrolet Tahoe 2000, 2001, 2002, 2003, 2004, 2005, 2006
Chevrolet Trailblazer 2000, 2001, 2002, 2003, 2004, 2005, 2006
GMC Canyon 2004, 2005, 2006
GMC Envoy 2000, 2001, 2002, 2003, 2004, 2005, 2006
GMC Sierra 1500 2000, 2001, 2002, 2003, 2004, 2005, 2006
GMC Yukon 2000, 2001, 2002, 2003, 2004, 2005, 2006
Pontiac G6 2003, 2004, 2005, 2006
Pontiac Grand Am 2000, 2001, 2002, 2003, 2004, 2005
Pontiac Grand Prix 2000, 2001, 2002, 2003, 2004, 2005
Pontiac Vibe 2000, 2001, 2002, 2003, 2004, 2005
Saturn Ion 2003, 2004, 2005
Saturn Vue 2002, 2003, 2004, 2005

Every document filed under 16-NA-383

Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.

Document IDFiledType
16-NA-383 June 28, 2024 Service bulletin
16-NA-383 March 13, 2024 Service bulletin

What 16-NA-383 covers

Engine, Fuel system — the component vocabulary NHTSA files this communication under.

← All Buick LaCrosse TSB years TSB lookup by model

Questions buyers ask

What is TSB 16-NA-383?

16-NA-383 is a service bulletin filed with NHTSA by Buick, Cadillac, Chevrolet, GMC, Pontiac and Saturn, covering 31 Buick, Cadillac, Chevrolet, GMC, Pontiac and Saturn models across the 2000–2009 model years. NHTSA's summary reads: This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.

Which vehicles does 16-NA-383 cover?

NHTSA's file names Buick LaCrosse (2005–2006); Cadillac CTS (2003–2006); Cadillac Escalade (2000–2006); Cadillac SRX (2004–2006); Chevrolet Avalanche (2002–2006); Chevrolet Aveo (2004–2009); Chevrolet Blazer (2000–2008); Chevrolet Camaro (2000–2002); Chevrolet Cobalt (2000, 2002, 2005–2006); Chevrolet Colorado (2004–2006), and 21 more vehicles listed on this page. A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

Is TSB 16-NA-383 a recall, and is the repair free?

No. 16-NA-383 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

How do I get the full text of 16-NA-383?

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 16-NA-383, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 16-NA-383. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.