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Service bulletin 877169

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 id615080
Published by NHTSA2000-12-27
Manufacturer's number877169
Manufacturer's date1998-07-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

INFORMATION PERTAINING TO NEW TRANSMISSION CALIBRATIONS. *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

Transmission and driveline, Automatic transmission, Transmission control module

Vehicles listed
CHEVROLET C SERIES1998
CHEVROLET G VAN1998
CHEVROLET K SERIES1998
CHEVROLET L SERIES1998
CHEVROLET M SERIES1998
CHEVROLET S SERIES1998
CHEVROLET T SERIES1998
GMC C SERIES1998
GMC G VAN1998
GMC K SERIES1998
GMC L SERIES1998
GMC M SERIES1998
GMC S SERIES1998
GMC T SERIES1998
OLDSMOBILE BRAVADA1998

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
0307300562004-03-04. Service bulletin. 4L60-E AUTOMATIC TRANSMISSION OIL PUMP FIRST AND SECOND DESIGN IDENTIFICATION. *TT
020730024A2002-10-11. Service bulletin. DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT
0207300172002-10-10. Service bulletin. CONCERN WITH NO SHIFT, HARSH SHIFT, NO ENGAGEMENT, TRANSMISSION IN DEFAULT, CHECK TRANSMISSION WARNING INDICATOR ILLUMINATED, RANGE INHIBITED INDICATOR ILLUMINATED, TRANSMISSION DIAGNOSTIC TROUBLE CODES SET ON F-MODEL MEDIUM DUTY TILT CAB MODELS. *TT
010730023B2002-10-09. Service bulletin. SOME CUSTOMERS MAY COMMENT ON A HARSH 1-2 UPSHIFT AND THE CHECK ENGINE LIGHT OR SERVICE ENGINE SOON INDICATOR IS ILLUMINATED AND DIAGNOSTIC TROUBLE CODE P1870 SET. *TT
010730023A2002-02-25. Service bulletin. INFORMATION REGARDING HARSH 1-2 UPSHIFT, SERVICE ENGINE SOON, MALFUNCTION INDICATOR LAMP, OR CEL ILLUMINATED, DIAGNOSTIC TROUBLE CODE P1870 SET. (1996-2000 CHEVROLET AND GMC LIGHT DUTY TRUCK MODELS) *YH
0107300232001-10-24. Service bulletin. SOME OWNERS WITH VEHICLES BUILT BEFORE JANUARY 15,1999 MAY COMMENT ON A HARSH 1-2 UPSHIFT AND MAY ALSO HAVE A CHECK ENGINE LIGHT. *ET
0107300212001-06-26. Service bulletin. THIS TECHNICAL SERVICE BULLETIN STATES THAT TECHNICIANS MAY EXPERIENCE DIFFICULTY IN REMOVING THE CONNECTORS FROM THE PARK / NEUTRAL POSITION SWITCH, USUALLY WHEN TRYING TO REMOVE THE SWITCH DURING TRANSMISSION SERVICE. *TT
010730002D2001-05-29. Service bulletin. MALFUNCTION INDICATOR LAMP (MIL) ON, TRANSMISSION STUCK IN THIRD GEAR, INSTRUMENT CLUSTER INOPERATIVE. *TT UPDATED *EH 2006 AND PRIOR GM PASSENGER CARS AND LIGHT DUTY TRUCKS. *SC
0107300122001-05-24. Service bulletin. INFORMATION PERTAINING TO THE NEW CONTROL VALVE BODY, SPACER PLATE AND GASKETS FOR THE 4L60-E AUTOMATIC TRANSMISSION. *TT
3008002001-05-11. Service bulletin. THIS MESSAGE DISCUSSES DIAGNOSIS AND REPAIR OF TRANSFER CASE SHUTTER. *TT