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Service bulletins for the 2003 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.

1069 on file from NHTSA, as of 2026-10-19.

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By component

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
0306030082003-12-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AVOIDING OIL LEVEL SENSOR HARNESS DAMAGE DURING LOWER OIL PAN INSTALLATION. *TT
0306030072003-12-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. AVAILABILITY OF STARTER MOTOR SOLENOID IF DAMAGED DURING SERVICE. 2004 CHEVROLET KODIAK C4500/5500 AND GMC TOPKICK C4500/5500 INCLUDED. *TT
0306010242003-12-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. RATTLE NOISE IN ENGINE. *TT
0306010232003-12-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. HIGHER THAN EXPECTED OIL CONSUMPTION <8500 GVW. VARIOUS MODELS INCLUDING 2003-2004 CHEVROLET KODIAK (C4500-C5500 SERIES MODELS)AND GMC TOPKICK (C4500-C5500 SERIES MODELS). *TT
030693001A2003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. DIAGNOSTIC INFORMATION FOR TURBO FAILURE DUE TO LACK OF OIL OR REPEAT TURBO FAILURES. *TT
0306040542003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED FUEL INJECTOR BALANCE TEST WITH TECH 2 (AUTOMATIC TRANSMISSION). VARIOUS MODELS INCLUDING 2003-2004 CHEVROLET KODIAK AND GMC TOPKICK. *TT
0306040532003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED FUEL INJECTOR BALANCE TEST WITH TECH 2 (MANUAL TRANSMISSION). *TT
0306040462003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED ENGINE CRANKS BUT DOES NOT RUN DIAGNOSTIC. *TT
0306040452003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE (DTC) P0093 OR DTC P1093 DIAGNOSTIC TABLES. *TT
030603001A2003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. STARTER CRANKS AFTER KEY IS RELEASED (NORMAL CONDITION). *TT
0306020072003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. LOSS OF COOLANT. *TT
030601024A2003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. RATTLE NOISE IN ENGINE. *TT
00827C2003-11-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON (SES) LIGHT ON WITH TAC MODULE CODES P1516 AND POSSIBLE CODES P1514, P1515, P1518. *TT
014152003-11-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CAM SENSOR CONNECTOR DOES NOT FIT SENSOR WHEN ENGINE IS REPLACED. *TT
01368A2003-11-20. Service bulletin. ENGINE AND ENGINE COOLING. COOLANT LOSS (INTO THE CRANKCASE). *TT
00634A2003-11-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. GEN III ENGINE NOISE AFTER HOT SOAK RESTART. *TT
013422003-11-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.3L LU3 ENGINE HOT SOAK HESITATION LOW POWER. *TT
00411B2003-11-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LACK OF POWER WITH TAC MODULE CODE OF P1518 REDUCED POWER MODE. *TT *MJ
020605003C2003-10-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EXHAUST MOAN/VIBRATION. *TT UPDATE. *TT
0308490092003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED ENGINE OIL PRESSURE GAGE INACCURATE OR INOPERATIVE DIAGNOSTIC INFORMATION. *TT
0306040332003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE P0336. *TT UPDATE. TO INCLUDE 2004 ISUZU NQR COMMERCIAL MODELS. *TT
0306040322003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CHECK ENGINE LIGHT ON WITH NO DRIVABILITY CONCERNS, DIAGNOSTIC TROUBLE CODE P0120, P0220, P1516, OR P1518 SET. *TT
0306040312003-09-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED DIAGNOSTIC TROUBLE CODE P1125. *TT
030602005A2003-09-29. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE COOLANT LOSS WITH NO VISIBLE LEAKS. *TT UPDATED *EH
020601010A2003-09-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. SERPENTINE BELT IDENTIFICATION AND DIAGNOSIS FOR MEDIUM DUTY TRUCKS. VARIOUS MODELS INCLUDING THE CHEVROLET AND GMC C5500 MD 2003. *TT

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