Issues after Differential and axle replacement 08 GT

[roman1978]

few weeks ago i had my rear differential and left axle replaced do to excessive play everything was done under warranty. After driving the car for few days i notice vibration between 50 an 65.also i hear grinding noise at low speeds Brought it back to the dealership they are saying i have worn rear tires. Tires were worn but did not have vibration before work was done. Last weekend replaced tires and still have vibration or feels like choppy ride.
I read before that driveshaft can cause vibration. I asked the tech if the driveshaft needs to be balanced after this kind of job he said no. Can someone suggest what the problem is. they told me all parts were new.

[Crazy Paul]

Can someone suggest what the problem is. they told me all parts were new.

It matters not what the problem is......it's their problem and not yours.
They blamed the tyres, you replaced the tyres, so it's their move IMO.

[TonyKarter]

Taking a car to the dealership is like going into the hospital. You go in for one ailment, they fix it, but you come out with a staph infection. Yes, it could be the driveshaft, and Paul is right: it is their problem, not yours.

[roman1978]

Yes u are absolutely right fixed one now another

[Rawyzf]

Did they align the car after the work?

[roman1978]

they said it does not need to be alighned

[Rawyzf]

In the Diff repair/replacement tech write up, it's says an alignment is recommended.

[Rawyzf]

Ok, I was wrong. I just read the sticky and I don't see a mention of alignment. However, I know I've heard/read it somewhere that it should be done when replacing the diff.

[roman1978]

ok thanks guys i set up an appointment to bring it in next week and will tell them to realighn the car

[roman1978]

How about driveshaft ?