Help with a Tranny solenoid

[DCanady]

Hello Forum,
I have a 02 GP GT, I had it diagnosed at the dealer with a high pressure solenoid that is bad. Before I shell out 700 bucks, I was wondering I any of you guys have replaced one. If so is it very difficult to do or is it easier, and less sressfull to just pony up the cash. Also the wouldn't actually tell where it is located on the tranny. If I could get any feed back, I would appreciate it a bunch.

Also, Any less expensive places to buy the solenoid, the dealer said I would need the solenoid and a gasket set at about 200 bucks.

[BNaylor]

The job is better left to a tranny pro but it can be done DIY but classified as difficult. Shops like Cottmans in my area charge around $550 including parts.

Here is a general procedure applicable to any GM car with the 4T65E and/or 4T45E autotransaxles. This is just to get the side cover off to replace the solenoid.

Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Starting and Charging.
Remove the throttle body air inlet duct. Refer to Air Cleaner Intake Duct Replacement in Powertrain Management.
Install the engine support fixture. Refer to Engine Support Fixture.
Remove the engine mount strut. Refer to Engine Mount Strut Replacement in Engine.
Raise and support the vehicle. Refer to Vehicle Lifting.
Remove the left front wheel. Refer to Tire and Wheel Removal and Installation in Steering and Suspension.
Remove the left engine splash shield. Refer to Splash Shield Replacement - Engine in Body and Frame.
Remove the stabilizer shaft links from the lower control arms. Refer to Stabilizer Shaft Link Replacement in Steering and Suspension.
Remove the left tie rod end from the steering knuckle. Refer to Steering Knuckle Replacement in Steering and Suspension.
Remove the wheel speed sensor harness connector. Refer Wheel Speed Sensor Jumper Harness Replacement (Front) in Brakes and Traction Control.
Remove the left lower ball joint from the left steering knuckle. Refer to Steering Knuckle Replacement in Steering and Suspension.
Disconnect the left drive axle from the transaxle. Refer to Wheel Drive Shafts Replacement (Left) or Wheel Drive Shafts Replacement (Right).
Secure the drive axle to the steering knuckle/strut. Caution: Failure to disconnect the intermediate shaft from the rack and pinion stub shaft can result in damage to the steering gear and/or damage to the intermediate shaft. This damage may cause loss of steering control which could result in personal injury.
Remove the pinch bolt at the intermediate steering shaft. Refer to intermediate Steering Shaft Replacement in Steering and Suspension.
Remove the intermediate shaft from the steering gear. Refer to Intermediate Steering Shaft Replacement in Steering and Suspension.
Disconnect the three-way catalytic converter pipe to the right (rear) exhaust manifold. Refer to Catalytic Converter Replacement in Powertrain Management.
Support the right side of the frame with jackstands.
Support the left side of the frame with jackstands.
Remove the transaxle mount bracket. Refer to Automatic Transmission Mount Bracket Replacement.
Remove the transaxle mount. Refer to Automatic Transmission Mount Replacement.
Loosen the engine mount lower nuts. Refer to Engine Mount Replacement (Front) and Engine Mount Replacement (Rear) in Engine.
Loosen the right side frame to body bolts. Refer to Frame Repair in Frame and Underbody.
Remove the left side frame to body bolts. Refer to Frame Repair in Frame and Underbody.
Adjust the jackstand to the lower left side of the frame.
Position the drain pan under the transaxle.
Remove the wiring harness connector.
Remove the case side cover bolts.
Remove side cover.
Pressure control (PCS) and TCC-PWM solenoids are located on the left hand side of the valve body.
During reassembly use new side cover gaskets.

[DCanady]

BNaylor, thanks alot. This sounds like a job better left to the pros.