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Service bulletin 020730017

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 id634968
Published by NHTSA2002-10-10
Manufacturer's number020730017
Manufacturer's date2002-05-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

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

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

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
8771692000-12-27. Service bulletin. INFORMATION PERTAINING TO NEW TRANSMISSION CALIBRATIONS. *TT
8671172000-12-27. Service bulletin. BRIEF INFORMATION REGARDING RUSTY TRANSMISSION FLUID LEVEL INDICATOR. *TT
837110A2000-04-05. Service bulletin. PARK/NEUTRAL POSITION SWITCH CONNECTOR CANNOT BE REMOVED. YD
990730004A2000-01-14. Service bulletin. A CONDITION WITH A RUSTY TRANSMISSION FLUID LEVEL INDICATOR / TRANSMISSION OIL FILLER TUBE. *TT
8674041999-03-08. Service bulletin. COMMENTS ABOUT A LOW TRANSMISSION FLUID LEVEL OR THAT THE TRANSFER CASE FLUID IS OVERFILLED. *YC