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Service bulletin 010604049A

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 id635630
Published by NHTSA2002-10-29
Manufacturer's number010604049A
Manufacturer's date2002-04-01
Replaces010604049
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM

NHTSA's summary

CUSTOMERS MAY COMMENT ON WHITE EXHAUST SMOKE DURING START-UP IN COLD AMBIENT TEMPERATURES. *TT

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, Exhaust and emissions

Vehicles listed
CHEVROLET T SERIES2000, 2001, 2002
CHEVROLET W55002000 to 2002
GMC T SERIES2000, 2001, 2002
GMC W55002000 to 2002
ISUZU FRR2000, 2001, 2002
ISUZU FSR1998 to 2002
ISUZU FTR1998 to 2002
ISUZU FVR1998 to 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
IB09-X-004C2022-08-02. Service bulletin. The Isuzu Commercial Truck of America (ICTA) Service Technical Assistance Center (TAC) provides diagnostic support to Isuzu dealer technicians repairing Isuzu vehicles in and out of vehicle warranty. A TAC case number will be issued solely for information tracking purposes and future contact reference.
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
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
0206030022002-06-10. Service bulletin. CUSTOMERS MAY COMPLAIN THAT THE ENGINE WILL NOT START. *JG
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