WenmarOpen by Wenmar Pro

Service bulletins for the 1999 Chevrolet Silverado

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

333 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
01119A2004-07-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ROLL-OUT FOR THE GEN III SMALL BLOCK ENGINES WITH IRIDIUM SPARK PLUGS. ALSO INCLUDES 2003/2004 M/L VANS. *TT
030605008B2004-03-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. ADVANCE SERVICE INFORMATION - EXHAUST SYSTEM POPPING/SNAPPING NOISE WHEN VEHICLE IS HOT, AT IDLE OR IMMEDIATELY AFTER VEHICLE IS SHUT OFF. *TT BULLETIN 03-06-05-008, DATED 11/01/2003 REPLACED. *TT
014842004-03-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. GEN III REPLACEMENT FLYWHEEL BOLT HOLES LARGER THAN ORIGINAL PART. THE BOLT HOLES FOR THE CRANK SHAFT IN THE REPLACEMENT FLYWHEEL ARE LARGER THAN THE HOLES IN THE ORIGINAL PART. SIT BULLETIN 1400596. *TT
00969A2004-02-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE WHISTLE NOISE. *TT
0306040602004-01-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON NEW SPARK PLUGS AND GAPPING. VARIOUS MODELS INCLUDING PONTIAC GTO 2004. *TT
0306010242003-12-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. RATTLE NOISE IN ENGINE. *TT
030601024A2003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. RATTLE NOISE IN ENGINE. *TT
00634A2003-11-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. GEN III ENGINE NOISE AFTER HOT SOAK RESTART. *TT
020605003C2003-10-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EXHAUST MOAN/VIBRATION. *TT UPDATE. *TT
020605003A2003-04-25. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EXHAUST MOAN/VIBRATION. *TT
020604054B2003-04-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INCREASED ACCELERATOR PEDAL EFFORT, IDLE INSTABILITY. *TT
0206010292003-02-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. NEEDLE BEARINGS FOUND IN OIL PAN. *TT
010601029B2002-10-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY COMMENT ON HIGHER THAN EXPECTED ENGINE OIL CONSUMPTION. *TT
020604023A2002-10-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY COMMENT ON A MILD TO SEVERE ENGINE PING (COMMONLY REFERRED TO AS SPARK KNOCK) USUALLY WORSE DURING ACCELERATION AND / OR AN ILLUMINATED MALFUNCTION INDICATOR LAMP. *TT
02-06-04-0372002-10-09. Service bulletin. UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE. SOME CUSTOMERS WHOSE VEHICLES ARE OPERATED IN DUSTY TYPE ENVIRONMENTS, SUCH AS FARMING OR MINING OFF-ROAD TYPE APPLICATIONS, MAY COMMENT ABOUT THE ILLUMINATION OF THE INSTRUMENT PANEL SES LIGHT, WITH DIAGNOSTIC TROUBLE CODE P0446 SET. *TT UPDATED 7/11/08. *NJ UPDATED 11/5/10. *PE
0206050032002-10-09. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EXHAUST MOAN OR VIBRATION AT LOW VEHICLE SPEEDS BETWEEN 900-1200 RPM UNDER LOAD. *TT
0206040232002-10-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY COMMENT ON A MILD TO SEVERE ENGINE PING (SPARK KNOCK) DURING ACCELERATION AND / OR ILLUMINATED MALFUNCTION INDICATOR LAMP WITH DIAGNOSTIC TROUBLE CODE P0332 SET. *TT
010417004A2002-02-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. CLUNK, BUMP OR SQUAWK WHEN VEHICLE COMES TO A COMPLETE STOP OR ACCELERATION FROM COMPLETE STOP. *YH UPDATE. *TT
0106040062001-05-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY COMMENT ON A LEAN HESITATION, SAG OR STUMBLE PRESENT DURING LIGHT TO MODERATE ACCELERATIONS. *TT
1112002001-04-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY COMPLAIN THAT THEIR FULL-SIZE PICKUP TRUCKS MAY BE HARD TO START OR INTERMITTENTLY DOES NOT START. *TT
0210002001-03-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SUBJECT REGARDING CUSTOMER COMPLAINT OF WHISTLE AND WIND RUSH OR FLUTTER TYPE NOISE. *TT
006010012000-06-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY COMMENT ON A WHIRLING SOUND FROM THE LOWER REAR SIDE OF THE ENGINE, OCCURING AS THE ENGINE WARMS UP, BETWEEN 1500 AND 2000 ENGINE RPM ON VEHICLES WITHIN VARIOUS VIN BREAKPOINTS. *TT
990091999-08-26. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). VOLUNTARY EMISSION CAMPAIGN REGARDING VEHICLES BUILT WITH THE WRONG EXHAUST GAS RECIRCULATION VALVE. *TT
990091999-08-26. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). SUBJECT REGARDING EXHAUST GAS RECIRCULATION VALVE (EGR) MISBUILDS. *TT
991091999-08-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). RECALL CAMPAIGN REGARDING EXHAUST GAS RECIRCULATION VALVE MISBUILDS. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.