1999 Mack DM problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 0 complaints on file for the 1999 Mack DM — too few to judge reliability from owner reports alone — but 2 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

NHTSA complaints

Recalls

Investigations

Crash-involved

Fires reported

Injuries

Deaths

—

NCAP overall

How does 1999 compare to other DM years?

DM NHTSA complaints by model year, 1999 highlighted. Red bars are years to avoid.

See all DM years to avoid →

Does the 1999 Mack DM have recalls?

2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

00V230003Speed ControlOctober 4, 2000 · 45,866 units

Defect

VEHICLE DESCRIPTION: CLASS 8 TRUCKS EQUIPPED WITH FELSTED ELECTRONIC ACCELERATOR PEDALS. THE RETURN SPRINGS CAN BREAK ON THE ACCELERATOR PEDALS THAT ARE EQUIPPED WITH STAINLESS STEEL OR ELECTROPLATED WIRE RETURN SPRINGS.

Consequence

THIS CONDITION COULD CAUSE THE PEDAL TO GO TO FULL THROTTLE IF BOTH RETURN SPRINGS BREAK, INCREASING THE RISK OF A CRASH.

Remedy

REPLACEMENT ACCELERATOR PEDALS EQUIPPED WITH RETURN SPRINGS MANUFACTURED OF MUSIC WIRE WITH ONE ADDITIONAL COIL ON EACH SPRING AND WITH AN ORGANIC COATING, ELIMINATING ELECTROPLATING WILL BE INSTALLED.

00V232009BrakesSeptember 13, 2000 · 651 units

Defect

VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS BUILT WITH BENDIX AIR ABS WITH AN EC-17 1030R ELECTRONIC CONTROL UNIT (ECU), THERE HAVE BEEN REPORTS OF UNWANTED ABS ACTIVATION AT LOW SPEEDS CAUSED BY 1) CHAFED ABS WHEEL SPEED SENSOR WIRES ON ROTATING PARTS OR 2) A DAMAGED COMPONENT AT THE WHEEL END THAT GENERATES A CERTAIN TYPE OF ERRATIC SENSOR SIGNAL.

Consequence

THIS CONDITION COULD CAUSE THE ABS ECU TO EXHAUST THE AIR AT THE AIR BRAKE MODULATORS FOR ONE OR MORE OF THE WHEELS. THIS COULD RESULT IN EXTENDED BRAKING DISTANCES AND A POSSIBLE CRASH.

Remedy

DEALERS WILL REPLACE THE ABS ECU.

1999 Mack DM — common questions

Is the 1999 Mack DM reliable?

The record is thin — 0 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.

Does the 1999 Mack DM have recalls?

Yes — NHTSA lists 2 recall campaigns affecting the 1999 Mack DM. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.

How does 1999 compare to other DM years?

Does the 1999 Mack DM have recalls?

1999 Mack DM — common questions

Is the 1999 Mack DM reliable?

Does the 1999 Mack DM have recalls?

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