6l80 stuck in limp mode
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Joined: Oct 2017
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6l80 stuck in limp mode 2009 Chevy 1500. I went off road last weekend. Nothing serious but a few mud holes. As soon as got on pavement codes got kicked and stuck and 3rd gear. P0700 Transmission Control system (Malfunction indicator lamp request), P0300 Random multiple misfire detected, P2771 Wheel Drive Low Switch Circuit, P0752 Shift Slenoid A Stuck on. When I went to check the transmission fluid the dipstick came out in my hand. It was broken in half, half way down. I can not say for how long as I just bought the truck 2 weeks ago. I got home going between 30 - 40 mph. Had plenty of power just would not shift. I kept track of trans temp and did not let it go above 205 degrees. I dropped the pan and the oil was burnt. I cannot say if that was from me or when I bought it. The truck has 118,000 miles on it. There was normal build up of metal on the magnet. No large chunks. I did this hoping it would clear the transmission codes. It must have been low because it took about 10 quarts to fill back up after dropping the pan. From what I understand it should have only take around 6 quarts from a pan drop. I did replace the transmission filter as well. It did not fix anything. As soon as drove it and got up to speed to shift past 3rd it went back into 'limp mode'. Any suggestions? I have no slippage or loss of power or hesitation from the transmission.
Thread Starter
Registered User
Joined: Oct 2017
Posts: 2
Likes: 0
6l80 stuck in limp I went into limp mode. Have codes P0752 Shift solenoid A stuck on, P0700 Transmission control system ( Malfunction Indicator Lamp Request), P0300 Random Multiple Misfire Detected. This happened randomly. Changed the fluid and filter and no change. Have 118,000 and the fluid was burnt. I don't know if was like that before or from me. I had to drive home between 30 - 40 mph while watching the temp. Never went above 207. I know that is higher than should be but was out in the middle of nowhere and had no choice. There was only normal amount of tiny metal on the magnet. No large chunks or anything even the size of sand. Still have plenty of power and no slippage. Any suggestions on what may be the cause. Electrical over bad solenoids? The vehicle is only 2 weeks out of the dealership.
