Vehicle recall 90V034000 · February 23, 1990

Mack DMM, RD and 1 more model

Crack may develop on steering arm that could progress and reduce the fatigue life of the steering arm.

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

Summary: Crack may develop on steering arm that could progress and reduce the fatigue life of the steering arm.
Consequence: Steering arm could fail without warning resulting in loss of steering control and possibly a crash.
Remedy: Install a redesigned steering arm.
Notes: System: steering arm.vehicle description: heavy-duty trucks.

Recall details

NHTSA campaign: 90V034000
Reported to NHTSA: February 23, 1990
Filed by: MACK TRUCKS, INCORPORATED
Owner notification: August 9, 1990
Vehicles potentially affected: 1,862
Initiated by: the manufacturer
Components: Steering › Linkages

Recall 90V034000 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.

Mack DMM (1980-1988): 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981, 1980
Mack RD (1980-1988): 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981, 1980
Mack RM (1980-1988): 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981, 1980

Has your Mack 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.

Check your VIN with NHTSA

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