2006 Grand Prix GT Vibration in steering wheel

**04montess** · 06-17-2010

I bought a 2006 Pontiac Grand Prix GT with 55,000 miles on it.. I have this annoying vibration felt in the steering wheel and a few other symptoms.

1. Small Pop noise when going from Park to Reverse
2. Vibration in Steering wheel Felt at all speeds, I thought it was coming from the drivers side
3. If I am on an incline put car in Reverse and hit the Gas, I feel a thump, which I think is coming from my Downpipe hitting the body.

Sofar I replaced

1. Drivers Side Wheel Bearing
2. Drivers Side Half Shaft
3. Switched tires from Front to Rear
4. Lubed Steering shaft, got rid of my turning thump

I am trying to figure out if itd my Motor Mount or my Ball joints and Bushings.

HELP, I don't Feel like spending anymore money without a good source of where the problem is...

**gahris** · 06-23-2010

My traction control sometimes goes on randomly when turning left, and makes the steeringwheel vibrate. I dont know if its the same thing, but could be.

**Piggy** · 07-25-2010

balancing in tires could be off

**papaspanky** · 09-12-2010

My 06 GPGT has a similar problem it was happening only while backing up and turning now sometimes the t/c light turns on and I get the vibration when parked.

**timmysgtp** · 09-12-2010

vibration sounds 2 me like balance on tires or pressure is off on tires! Is your car supercharged? If so I had the same prob while taking my car out of park it was the torque strut mount aka dog bones!! Hope this helps

**Sandman** · 09-12-2010

Check out your motor and tranny mounts for the popping. They are filled with fluid stock so they can look fine but actually be shot. I imagine that that will fix a couple of your problems. Buy the solid rubber mounts, they're cheap and you won't notice the difference.

For the steering vibration is it just a vibration or does the wheel wobble a little as well?

**CTKGP09** · 09-12-2010

1. Small Pop noise when going from Park to Reverse
= bad motor mount or downpipe hitting sway bar(flip sway bar in this case)

2. Vibration in Steering wheel Felt at all speeds, I thought it was coming from the drivers side
= possibly a bad wheel bearing

3. If I am on an incline put car in Reverse and hit the Gas, I feel a thump, which I think is coming from my Downpipe hitting the body.
= same as number 1

if moveing and you hear the POP i would say control arm bushings but idk if that is the case

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