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2007 GP GXP - Tranny rebuild

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DrParmeJohnson

New member
Thinking about doing the necessary transmission/TC rebuild on my GXP @107k miles. The shop I’m going through quoted somewhere between $1.9k-2.7k and I’m not sure if I want to go through with it. I’ve got the car on a loan and I do love the car, it’ll just be a bit tough coughing up the cash for the repair. Reason I’m pursuing the rebuild is because of a somewhat persistent slippage issue and after taking it to the transmission shop, they did say that it definitely needed some work but again, I’m not sure.

So, any opinions would be much appreciated.

Edit: loan not lease
 
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I think the questions you need to answer are 1) how long is the lease, and do you think the tranny will survive the length of the lease if you don't repair it--because if it fails, you'll pay for it one way or the other, and 2) do you like the car enough to think you may purchase it at the end of the lease?

You should in any case have a couple more shops look at it and give you estimates. BTW, who leases 12-year-old cars? I'm genuinely curious--may want to do something like that myself someday.
 
Whoops, meant to say got the car on a loan not a lease but I do intend on keeping the car and I’ve got like 3 more years on the loan and I’m not exactly sure if it’ll make it. It’s not horrifically bad but I feel it may be getting more persistent on the slippages and I’d rather just rebuild now rather than replace it for about the same or higher cost later down the line.
 
^^^are you affluent enough to remove the transmission?

If you can bring the tranny already out of the car to a repair shop that saves tons of money.
 


Not really, I’m not quite at that kind of level really and that’d probably mean I’d have to put it back in and I wouldn’t be able to do that either.
 
Ohio has a huge base for the GP/3800 crowd (LS4 cars share the chassis/transmission). I'd suggest getting in touch with some of the active folks who have tons of experience, and can possibly aid your removal/install work. I can put the word out through a longtime friend that can have someone reply here.

- Dave
 
I mean if you’re willing I’d appreciate it. I’m up in northeast Ohio, more around the Akron/Kent area.
I know taking the transmission out and all that racks up a lot of labor hours but, I’m not sure what all I’d need out for the shop. I know they mentioned torque converter but idk if they do differential or any of that.
 
DrParmeJohnson said:
I mean if you’re willing I’d appreciate it. I’m up in northeast Ohio, more around the Akron/Kent area.
I know taking the transmission out and all that racks up a lot of labor hours but, I’m not sure what all I’d need out for the shop. I know they mentioned torque converter but idk if they do differential or any of that.
Click to expand...

The good part is that withe these 4T65e setups, it all comes out together, basically. The torque converter can stay put right inside the bell housing, and the differential is built right into the tail on the passenger end, so it's staying put until someone digs in.

It's no simple task to get out, but it depends on if you're willing to pay the shop for their time, or go through the stress on your time.
 
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