Ok my friend here it is. As printed on pages 6E3-C-6 and 6E3-C-7 Book 2 of 2 1995 G-Body Service Manual. I typed it as accurately as possible. I MAKE NO GUARANTEES THAT THIS WILL SOLVE YOUR PARTICULAR PROBLEM. I MAKE NO GUARANTEES AS TO THE ACCURACY OF MY TYPING - I believe it to be accurate.
Here's the first part:
TP Sensor Learn Procedure
(Without Tech 1) 1995 Service Manual G-Body
A “TP SENSOR LEARN” routine has been implemented in the PCM software to allow the PCM to correct or offset the closed throttle signal value of the TP sensor. This is necessary because of manufacturing tolerances during minimum air adjustment, TP sensor manufacture and because the TP sensor is not adjustable on the throttle body. If an improper TP sensor offset is maintained by the PCM, a high idle at closed throttle or stall condition may occur. Performing the “TP SENSOR LEARN” procedure lets the PCM learn the correct TP sensor offset.
The “TP SENSOR LEARN” procedure should be performed when:
§ The TP sensor is replaced
§ The throttle body is replaced
§ The PCM is replaced
§ Before the “IDLE LEARN” procedure
§ If “TP LEARN” is reset
To perform the “TP SENSOR LEARN”:
1. Turn ignition to “ON” (do not start, engine not running)
2. Turn ignition to “OFF”
3. Wait a minimum of 20 seconds
4. Turn ignition to “ON” (do not start, engine not running)
5. Turn ignition to “OFF”
6. Wait a minimum of 20 seconds
7. Turn ignition to “ON” (do not start, engine not running)
8. Turn ignition to “OFF”
9. Wait a minimum of 20 seconds
Here's the second part:
Idle Learn Procedure
(Without Tech 1) 1995 Service Manual G-Body
The “IDLE LEARN” routine of the PCM calculates a throttle angle correction or offset that is used during closed throttle idle control. If an improper throttle angle offset is maintained by the PCM, a high idle at closed throttle or stall condition may occur. Performing the “IDLE LEARN” procedure lets the PCM learn the correct throttle angle offset.
The “IDLE LEARN” procedure should be performed when:
§ After the “TP Sensor Learn” procedure
§ The ISC actuator is adjusted or replaced
§ The TP sensor is replaced
§ The throttle body is replaced
§ The PCM is replaced
To perform the “IDLE LEARN”:
1. Start the engine
2. Allow the vehicle to idle continuously until the coolant temperature is 80C (176F), then idle an additional 5 minutes
3. With the transaxle in “PARK” range, briefly accelerate the engine over 1500 rpm
4. Return to idle
5. Apply the brakes and place the transaxle in “DRIVE” range
6. Idle the vehicle for 2 minutes or until the MIL (Malfunction Indicator Light) goes out
As I mentioned earlier. I had a similar condition and it was diagnosed to be the Crankshaft Position Sensor. None the less - Good Luck.