| Issue ID | 851949 |
| Internal NHTSA # | 10394105 |
| Manufacurer | CHRYSLER GROUP LLC |
| Brand | JEEP |
| Model | GRAND CHEROKEE |
| Model Year | 2006 |
| File date | 02/04/11 |
| Component | SUSPENSION:FRONT |
| Product type code | VEHICLE |
| Description of the problem | The oem nut holding the pinch bolt to the upper control arm in my 2006 jeep grand cherokee limited came loose and ultimately fell off. This caused the upper control arm to separate from the vehicle, which resulted in the front driver's side wheel and hub assembly breaking off from the axle while in motion. The vehicle came to a stop with three intact wheels and the driver's side wheel underneath the body. Fortunately, the vehicle was not at highway speed or severe injury or death would have been probable, due to the loss of the entire assembly and the loss of all brake system hydraulic pressure, as the brake line was also severed. The oem nut holding the pinch weld to the upper control arm appears inadequately designed to withstand routine removal and retightening for service such as wheel alignment and suspension adjustments. There appears to be inadequate engineering thought into ensuring, at a minimum, a simple mechanism to securely fasten the nut (e. G., cotter pin, serrated flange, or other locking feature). This is a severe oversight given the potential danger associated with an upper control arm separation at speed. |
| Vehicle Mileage at Failure | 45102 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | WEST LINN, OR |
| VIN pattern | 1J8HR582X6CXXXXXX |
| Was vehicle invloved in a crash? | Y |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | |
| Was part original equipment? | |
| No. of injured persons | |
| No. of fatalities | |
| Date of purchase | 07/08/26 |
| Was original owner? | N |
| Anti-lock brakes | N |
| Cruise control | N |
| Number of cylinders | 8 |
| Drive train type | 4WD |
| Transmission type | |
| Vehicle speed | 10 |
| DoT tire identifier | |
| Tire size | |
| Location of tire code | |
| Type of tire failure code | |
| Was defective tire repaired? | |
| Date of manufacture | |
| Type of child seat code | |
| Type of restraint | |
| Dealer's name | |
| Dealer's telephone number | |
| Dealer's city | |
| Dealer's state code | |
| Dealer's ZIP code |