Skip the auto shop - Our mechanics make house calls

Q: we have a 2012 Infinty QX56 20 passenger Super stretch limo in our fleet. Rear end grinding

asked by on

last evening there was a grinding noise coming from the rear of the SUV. It is a 20 passenger Super Stretch Limousine. The factory rear was probably not changed when it was converted. The gears are grinding bad, and the vehicle will not move. is there a heavy duty truck rear end that is compatible, or a kit to replace the gears

My car has 72000 miles.
My car has an automatic transmission.

Typically, a rear end assembly will fail due to lack of maintenance, but severely worn brake pads may cause the same type of noise. The rear of the vehicle may be lifted and the vehicles transmission set to rear wheel drive to see if the rear wheels will move in drive. If there is movement from the driveshaft and wheels do not move, then the rear end has to be replaced. This service will have to be done at your local Infiniti dealer for the best results as they are best equipped with the right parts to go back on the vehicle. Consider hiring an experienced technician like one from YourMechanic who can come out and assess the damage on your vehicle to offer a more personal diagnosis.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. we have a 2012 Infinty QX56 20 passenger Super stretch limo in our fleet. Rear end grinding

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Can I supply the part for the service that I need done?

You can supply your own parts but will not get any warranty for the install if the part is defective or has a problem down the road. If we supply the part then we can warranty it.

Q: What does the “Tire pressure monitor fault” warning mean in the message center?

Your car includes some pretty advanced electronics, such as the Tire Pressure Monitoring system (TPMS). The TPMS is supposed to monitor the amount of air in each tire. However, if something goes wrong with the system, it will not be...

Q: Why would a new bettery be corroding so much already?

First thing to check is to see if all the corrosion was removed and neutralized on the battery clamp and cable. The have the charging performance tested to see it the alternator is not overcharging and causing the battery to...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.