- The problem
- 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.
- The risk
- 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.
- The fix
- 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 1-610-709-3337.
Vehicle safety record
1997 Mack CH Problems, complaints & recalls
Owners have filed 1 complaint about the 1997 Mack CH with NHTSA, most often about the engine & cooling (1). It is covered by 2 recalls, the latest in April 2004 for the pressure relief devices. For comparison, the 1996 has 1 and the 1998 has 0.
NHTSA data checked
AFar fewer problems than a typical CH year, for its age
#338 most complained-about 1997 vehicle
- Complaints
- 1
- Recalls
- 2
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Most common 1997 Mack CH problems
Share of all 1 complaints. One complaint can name more than one area. Tap an area for its complaints and recalls.
1997 Mack CH recalls 2
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
- The problem
- 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.
- The risk
- If the nut backs off, there could be a loss of driver control.
- The fix
- Dealers will retorque the drag link to the axle steering arm connection.
What owners say
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1 complaints about the 1997 Mack CH
Newest first, as filed with NHTSA by owners.
Serious vibration, resulting in several transmission/engine repairs to no avail.
Mack CH: every year compared
All CH years1997 Mack CH vs rivals
| Vehicle | Complaints | Recalls | Grade | |
|---|---|---|---|---|
| 1997 Mack CH | 1 | 2 | A | |
| 1997 Mack Mack | 3 | 1 | F | Compare |
| 1997 Mack CH600 | 1 | 0 | C | Compare |
| 1997 Mack CH613 | 1 | 0 | - | Compare |
More sales usually means more complaints, so compare similar vehicles of the same year. The grade compares each vehicle with its own model's other years.
Questions about the 1997 Mack CH
Does the 1997 Mack CH have any recalls?
Yes - NHTSA lists 2 recalls for the 1997 Mack CH: pressure relief devices (April 2004); connection (November 1997). Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
What are the most common problems with the 1997 Mack CH?
By the complaints owners filed with NHTSA, the most common problem areas are the engine & cooling (1).
How many complaints has the 1997 Mack CH had?
1 complaints have been filed with NHTSA, the first on September 2, 1997 and the latest on September 2, 1997. Of these, 0 describe a crash and 0 a fire, and together they report 0 injuries and 0 deaths.
Is the 1997 Mack CH a reliable vehicle?
Its Safety Index is 76 out of 100 (grade A: far fewer problems than a typical Mack CH year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
Which Mack CH years have the most complaints?
2002 (2), 1992 (1), 1994 (1). See every Mack CH year compared.
What should I do if my 1997 Mack CH has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data