How many recalls does the 1997 Mack Ch have?

The 1997 Mack Ch has 2 NHTSA safety recall campaigns on record.

How do I check if my 1997 Mack Ch has an open recall?

Enter your 17-character VIN at NHTSA's official recall lookup (nhtsa.gov/recalls) to see open, unrepaired recalls for your specific vehicle. Recall repairs are free.

What do owners complain about most on the 1997 Mack Ch?

Of 1 NHTSA complaints on file, the most-reported component is engine and engine cooling.

1997 Mack Ch Recalls

Recalls on record Updated July 2026

The 1997 Mack Ch has 2 NHTSA recall campaigns affecting an estimated 10,755 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 1 complaint with NHTSA, most often about the engine and engine cooling. Last updated July 5, 2026.

Recall campaigns

FUEL SYSTEM, OTHER 04V159000 2004-04-07 317 affected

Defect

ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE.

Consequence

THIS COULD CAUSE ICE BUILDUP ON THE DISCHARGE SIDE OF THE PRIMARY AND SECONDARY PRESSURE SYSTEM ALLOWING THE RELIEF SYSTEM TO FREEZE AND BECOME BLOCKED RESULTING IN OVER PRESSURIZATION OF THE LNG TANKS CREATING THE RISK OF CATASTROPHIC TANK RUPTURE WHICH COULD CAUSE SERIOUS INJURY OR DEATH.

Remedy

DEALERS WILL RETROFIT THE LNG TANKS WITH A NEW PRIMARY RELIEF VALVE PIPE AWAY TUBE AND A NEW VENTILATED SHROUD. THE RECALL BEGAN APRIL 6, 2004. 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 MACK AT…

STEERING 97V191000 1997-11-01 10,438 affected

Defect

VEHICLE DESCRIPTION: CLASS 8 HEAVY DUTY TRUCKS. DURING ASSEMBLY, INSUFFICIENT TORQUE OCCURRED OF THE DRAG LINK TO THE AXLE STEERING ARM CONNECTION. IF THE DRAG LINK TO AXLE STTERING ARM CONNECTION IS NOT TORQUED AND THE COTTER PIN IS NOT INSTALLED, THE NUT COULD BACK OFF DURING VEHICLE OPERATION.

Consequence

IF THE NUT BACKS OFF, THERE COULD BE A LOSS OF DRIVER CONTROL.

Remedy

DEALERS WILL RETORQUE THE DRAG LINK TO THE AXLE STEERING ARM CONNECTION.

Complaints by component

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

Total complaints1

What owners report

Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.

“Serious vibration, resulting in several transmission/engine repairs to no avail.”

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE · reported 1997-05-12

Sources & methodology

Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1997 Mack Ch as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.