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Vehicle recall 01V334000 · October 17, 2001

GMC Envoy and Chevrolet Trailblazer

Vehicle description: sport utility vehicles equipped with 4-wheel drive.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary
Vehicle description: sport utility vehicles equipped with 4-wheel drive. The calibration of the transfer case control module could cause insufficient high speed gear engagement.
Consequence
If the gear is not engaged, the vehicle can roll when the transmission is in "park" and a crash could result without warning.
Remedy
Dealers will update the transfer case control module calibration to increase gear engagement. Owner notification began November 6, 2001. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact Chevrolet at 1-800-222-1020 or GMC at 1-800-462-8782.
Notes
Also contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).

Recall details

NHTSA campaign
01V334000
Reported to NHTSA
October 17, 2001
Filed by
GENERAL MOTORS CORP.
Manufacturer campaign
01064/01065
Owner notification
November 6, 2001
Vehicles potentially affected
78,004
Initiated by
the manufacturer
Components
Power train › Transfer case (4-wheel drive)
Recall 01V334000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Has your Chevrolet been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Chevrolet dealer can also check your VIN. Recall repairs are free.