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Intermittent trans issue... is it finally toast?

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05GXPBeast

Donating User
I was driving my 05 grand prix the other day when I came up to a stop sign, and my car suddenly didn't want to move in gear. I limped it across the street and shut it off, and after a few minutes I started it up, and drove it for a couple miles before the same thing happened at the next stop sign. Every time it happens It only starts moving again once I shut it off and start it back up.

I'm looking for opinions and suggestions before I start tearing into it as to what it could be. It has almost 170,000 on the trans, so I'm almost sure it is due for a rebuild.
 


I think I narrowed it down to the pressure control solenoid. I'm going to attempt to replace all the solenoids myself. From my understanding I will have to drop the cradle 5-6 inches and pull everything out around the driver side front tire to have enough room to get the cover off the trans.
My only question is, can I get away with just pulling both dogbone mounts, and leave everything else in the engine bay connected? I know I have to atleast pull all four cradle bolts,driver side strut,trans mount,tie rod, axle, and brake caliper, and unhook the sway bar. Beyond that I'm not entirely sure. If anyone has a detailed write up that would be greatly appreciated.
 
I just got done replacing 5 solenoids in the trans; shift solenoids, tcc,epc, and mps. I topped off the fluid, but now the car doesn't move at all in any gear. I used oem ACdelco solenoids and verified the fluid level is good.
 
What did the pan/magnet look like?
Are there any codes?
If you leave the cooler *return* line disconnected, do you see fluid flow?
 
I finally got around to dropping the pan on the car... There was so much material built up in the pan and inside the filter. I put a new filter/fluid in, and everything is working as it should now. I put about 150 miles on the car without any issue. It's definitely going to need a rebuild before next year. For now I just put some Lucas in it, and I'm going to drive it for another month or so.
 


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