1991 Mack CH: recalls and complaints

NHTSA lists 5 recall campaigns for the 1991 Mack CH. The newest campaign is 00V019003. NHTSA received the report on 11 May 2000. The NHTSA record gives the component Trailer Hitches / Fifth Wheel Assembly. NHTSA has no complaint on file for this model year.

The NHTSA recall file shows no do-not-drive advisory and no park-outside advisory on these campaigns.

This page cannot show if a recall applies to one vehicle. The NHTSA VIN lookup shows the unrepaired recalls of one vehicle.

Remedy of the newest campaign, 00V019003, in the NHTSA record

Dealers will inspect and replace the mounting plates that are cracked.

NHTSA VIN lookup

Complaint information entered into NHTSA’s Office of Defects Investigation vehicle owner's complaint database is used with other data sources to identify safety issues that warrant investigation and to determine if a safety-related defect trend exists.
NHTSA publishes these words. Source: NHTSA Datasets and APIs, section Complaints, read on 1 Oct 2026. Complaint file through 15 May 2019. Recall file through 29 Sep 2026.

Since the last update

No tracked figure of this page changed in a data update. What the log tracks

All updates to the register

Recall campaigns

5 campaigns, newest first. 72,587 units in total.

00V01900311 May 2000Trailer Hitches / Fifth Wheel Assembly
94V2160001 Nov 1994Power Train / Driveline / Center Support Bearing
94V03200015 Feb 1994Vehicle Speed Control
93V13700020 Aug 1993Engine and Engine Cooling / Cooling System / Fan
91V11200025 Jun 1991Seat Belts / Front / Anchorage

00V019003Received 11 May 2000. 90 units.
Trailer Hitches / Fifth Wheel Assembly
Defect, in the NHTSA record
Vehicle description: heavy duty class 8 trucks equipped with fontaine fifth wheel assemblies. The fifth wheel mounting plates can crack.
Consequence, in the NHTSA record
Under the trailer loading, the mounting plate could eventually fail due to fatigue.
Remedy, in the NHTSA record
Dealers will inspect and replace the mounting plates that are cracked.
Report filed by MACK TRUCKS, INCORPORATED. Manufacturer campaign number SCO259. Owner notification date in the NHTSA record: 22 Jun 2000.
94V216000Received 1 Nov 1994. 17,720 units.
Power Train / Driveline / Center Support Bearing
Defect, in the NHTSA record
The driveshaft center bearing support bracket can crack and break.
Consequence, in the NHTSA record
If this happens, the driveshaft will wobble and can separate. Separation can result in damage to other components of the vehicle or loose fragments can fall onto the roadway presenting a hazard to other drivers.
Remedy, in the NHTSA record
Dealers will replace the center bearing hanger bracket.
Report filed by MACK TRUCKS, INCORPORATED. Owner notification date in the NHTSA record: 3 Apr 1995.
94V032000Received 15 Feb 1994. 39,777 units.
Vehicle Speed Control
Defect, in the NHTSA record
Fuel injection system reconfiguration to comply with engine emission standards cause higher engine vibration levels which lead to early wear and complete failure of the secondary throttle return mechanism.
Consequence, in the NHTSA record
In the event the primary throttle return fails, failure of the secondary throttle return system would not provide protection against loss of throttle control.
Remedy, in the NHTSA record
A new production secondary throttle return system configuration will be installed.
Report filed by MACK TRUCKS, INCORPORATED. Owner notification date in the NHTSA record: 27 May 1994.
93V137000Received 20 Aug 1993. 11,000 units.
Engine and Engine Cooling / Cooling System / Fan
Defect, in the NHTSA record
The engine cooling fan blades may break due to inadequate blade strength around the rivets that attach the blades to the fan spider.
Consequence, in the NHTSA record
If complete fracture of the fan blade occurs, it couldbe propelled outside the fan shroud, injuring person(s) in the vicinity ofthe truck.
Remedy, in the NHTSA record
An improved fan will be installed on these vehicles.
Report filed by MACK TRUCKS, INCORPORATED. Owner notification date in the NHTSA record: 1 Oct 1993.
91V112000Received 25 Jun 1991. 4,000 units.
Seat Belts / Front / Anchorage
Defect, in the NHTSA record
Lap and shoulder seat belt arrangement for fixed (non-suspension) seats does not meet the seat belt loading requirements of FMVSS 210. The inboard clinch nut in cab sill, where the buckle for the shoulder and lap belt is mounted, pulled out of the sill during the tests. Consequence of defect: if seat belt anchirage fails, the seat occupant faces an increased risk of injury in an accident or sudden stop.
Remedy, in the NHTSA record
Relocate the inboard seat belt mounting from top of the sill to the forward flange of the sill on the cab floor, and add a 3mm fillet weld around the 2 inboard clinch nuts.
Report filed by MACK TRUCKS, INCORPORATED. Owner notification date in the NHTSA record: 11 Oct 1991.

The campaign number opens the NHTSA record. Each quotation is the text of the NHTSA recall file.

Recall campaign: One recall in the NHTSA recall file, with one campaign number. A campaign can name many makes, models and model years.

Units: The number of vehicles or products that a recall can include. The manufacturer or the firm reports the number to the agency.

Complaints by component

The NHTSA complaint file has no complaint for this model year.

Investigations

The NHTSA investigation file has no investigation that names this model year.

Investigation: A study of a possible safety defect by the NHTSA Office of Defects Investigation. An investigation with no closing date in the NHTSA file is open.

Other model years

The number under each year is the number of recall campaigns.

A year without a link has fewer than 2 campaigns and fewer than 25 complaints. It has no page.

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Official channels

NHTSA VIN lookupNHTSA shows the unrepaired recalls of one vehicle from its VIN or its license plate.
NHTSA: report a safety problemThe NHTSA form for a complaint about a vehicle, a tire, a child seat or equipment.
NHTSA page of the 1991 Mack CHThe recalls, the complaints and the investigations that NHTSA shows for this model year.

Cite this page

Recall Register. 1991 Mack CH: recalls and complaints. https://recallregister.com/vehicle/mack/ch/1991/. Source: NHTSA Office of Defects Investigation, recall, complaint and investigation files. Data through 29 Sep 2026.

Sources

Source: NHTSA Office of Defects Investigation
Licence: US government work, public domain
Recall file through: 29 Sep 2026
Complaint file through: 15 May 2019
First complaint in the file: 1 Jan 1995
Manufacturer in the recall file: MACK TRUCKS, INCORPORATED

The NHTSA record is the authority. A complaint count is the number of different complaint numbers for the make, the model and the model year. How the register is made. Report an error.

Questions

How many units are in the recall campaigns for the 1991 Mack CH?: 72,587 units in 5 campaigns. A campaign can name other models and model years, and its units include them.
How many recall campaigns does the Mack CH have for all model years?: NHTSA lists 34 recall campaigns for the Mack CH, model years 1987 to 2007. 5 of them name the 1991 model year.
Is an NHTSA investigation of the 1991 Mack CH open?: The NHTSA investigation file has no investigation that names this model year.