WenmarOpen by Wenmar Pro

Service bulletin 000421002

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 id617734
Published by NHTSA2001-03-26
Manufacturer's number000421002
Manufacturer's date2000-12-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT

NHTSA's summary

SOME CUSTOMERS MAY COMMENT ON A HIGH TRANSFER CASE SHIFT EFFORT WHEN SHIFTING FROM 2H TO 4H WITH THE VEHICLE IN MOTION. *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 TRACKER1999, 2000

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
PIP53462017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about cooler line fittings that come with the 4T65E General Motors remanufactured transmission may not be the same as Original equipment manufacturer quick connect verses inverted flare. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
018322004-05-07. Service bulletin. 372LE AUTOMATIC TRANSMISSION NO FIRST GEAR. *MR
0102012001-04-10. Service bulletin. SUBJECT REGARDING VEHICLES WITH FOUR-WHEEL DRIVE THAT ARE DIFFICULT TO SHIFT FROM TWO HIGH TO FOUR HIGH. *TT
0801012001-04-06. Service bulletin. CUSTOMERS MAY COMMENT ON THE EXCESSIVE AMOUNT OF EFFORT NEEDED TO SHIFT FROM TWO HIGH TO FOUR HIGH ESPECIALLY THE FIRST TIME. *TT