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Service bulletin 020603002

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id631668
Published by NHTSA2002-06-10
Manufacturer's number020603002
Manufacturer's date2002-03-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

CUSTOMERS MAY COMPLAIN THAT THE ENGINE WILL NOT START. *JG

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
CHEVROLET T SERIES1997, 1998, 1999, 2000, 2001, 2002
GMC T SERIES1997, 1998, 1999, 2000, 2001, 2002

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
PIT3173C2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician that fluid contamination may be directed to one of the following testing centers according to the type of fluid needing testing. Dealer should send the correct fluid to the proper testing center.
PIP5163A2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about engine block of possible cylinder bore damage, scoring or out of round as the possible cause of engine oil consumption, misfire, cylinder leakage or blow by. Technician will need to inspect the engine for Cylinder damage or scoring, An out of round cylinder bore, Dirt intrusion, and Catalytic Converter failure.
PIP-46952010-03-25. Service bulletin. GM: LOSS OF POWER HESITATES ON ACCELERATION. 4.3, 4.8, 5.3, 5.7 AND 6.0 ENGINES COUPLED WITH THE 4L60E OR 4L65E MAY EXPERIENCE A CONDITION OF HESITATES, MISSES OR LOSS OF POWER UNDER ACCELERATION. THE VEHICLE MAY OPERATE AS IF IT IS IN REDUCED POWER MODE. *PE
0306040142003-04-15. Service bulletin. OIL PRESENT AROUND TURBO AREA, OIL LEVEL LOW, OIL PRESSURE GAUGE MAY DROP. *TT
0206040602003-03-28. Service bulletin. AUTOMATIC ENGINE SHUTDOWN FEATURE. *TT
010604049A2002-10-29. Service bulletin. CUSTOMERS MAY COMMENT ON WHITE EXHAUST SMOKE DURING START-UP IN COLD AMBIENT TEMPERATURES. *TT
0206010242002-10-09. Service bulletin. ON CERTAIN VEHICLES, SUCH AS THE CHEVROLET AND GMC WT 5500 MEDIUM DUTY TILT CAB MODELS, THE ENGINES MAY EXPERIENCE ROCKER ARM DAMAGE OR ROCKER BRIDGE DAMAGE FOLLOWING OVERHAUL OF THE CYLINDER HEAD IF THE VALVE BRIDGE STUD INSTALLED DEPTH IS INCORRECT. *TT
0106040492002-05-22. Service bulletin. SUBJECT REGARDING WHITE SMOKE DURING START UP,INCLUDES 1998-2002 CHEVROLET AND GMC WT 5500 SERIES MEDIUM DUTY TILT CAB MODELS. *SLC
0206030022002-05-21. Service bulletin. CUSTOMERS MAY COMPLAIN THAT THE ENGINE WILL NOT START. *SLC
0206040062002-04-02. Service bulletin. SOME CUSTOMERS MAY COMMENT ON SERVICE ENGINE SOON LAMP ON, MALFUNCTION INDICATOR LAMP ILLUMINATIONS INTERMITTENTLY, DIAGNOSTIC TROUBLE CODE SET, BLOWN FUSES, AND ENGINE WILL NOT START. *TT