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05 GXP hard shifting sometimes.....
Posted: Mon May 20, 2013 12:24 pm
by erichthecatt
My 2005 Pontiac Bonneville gxp, with 85,000 miles on it will occasionally shift hard in all gears. Once the car is restarted. its back to normal, and shifts great. Anyone have an idea of what the problem might be? Thanks....
Re: 05 GXP hard shifting sometimes.....
Posted: Mon May 20, 2013 12:39 pm
by CMNTMXR57
Pressure control solenoid.
Unless it happens every time you drive it, just live with shutting it off and restarting. TO get to the solenoid is a metric ton of labor to removing front halfshafts, drop the cradle, transaxle, remove the side case to get to it, replace the solenoid, then reassemble everything...
Re: 05 GXP hard shifting sometimes.....
Posted: Mon May 20, 2013 10:39 pm
by nos4blood70
Yikes. I take it there is no shift kit option for the 4t80?
Re: 05 GXP hard shifting sometimes.....
Posted: Tue May 21, 2013 10:38 am
by CMNTMXR57
None over the shelf.
But the task is pretty much the same on the 4T65E also. They're in the same location, inside the side cover, that requires dropping the cradle enough to open the case.
Re: 05 GXP hard shifting sometimes.....
Posted: Tue May 21, 2013 10:42 am
by harofreak00
Re: 05 GXP hard shifting sometimes.....
Posted: Tue May 21, 2013 6:15 pm
by 00Beast
Unless you have an extended warranty, then run to the dealer before it expires...
Re: 05 GXP hard shifting sometimes.....
Posted: Sun May 26, 2013 9:16 am
by Bvill_GXP
Yea mine has been doing that since about 90K.. has 118K on it now!! Once restarted it has went up to 3-4 months before it does it again and this car is now a daily driver. So Unless it gets worse im not going to worry about it..