Driving home I had a message engine power reduced, stability tracking turned off. I was able to drive but no faster than 42 mph. Scanned code came up P2135. Did some research and found that the throttle body sensor failed. This puts the car in one mode to drive, 5th gear and higher RPM's. On my car there is no way to just replace the sensor. I ordered an AC Delco throttle body and gasket from Rock Auto for $129. A very easy job to replace.
Loosen hose clamps on the air intake cover and remove. Snap off the plastic engine cover underneath that, Remove the 4 bolts that hold the throttle body in place. Disconnect wiring connector, remove gasket. Replace in opposite order.
Re-learn procedure. Start engine let idle for 3 minutes, turn off for 2 minutes, then idle again for 3 minutes. It may take up to 50 miles for the computer to learn the throttle body. I have since driven 400 miles and car is idling normally and I have no codes.
Loosen hose clamps on the air intake cover and remove. Snap off the plastic engine cover underneath that, Remove the 4 bolts that hold the throttle body in place. Disconnect wiring connector, remove gasket. Replace in opposite order.
Re-learn procedure. Start engine let idle for 3 minutes, turn off for 2 minutes, then idle again for 3 minutes. It may take up to 50 miles for the computer to learn the throttle body. I have since driven 400 miles and car is idling normally and I have no codes.