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Potential Tuner
I 83 swap
Installed L 83 with 4l60 trans with stand alone controller. Starts and runs for 20-30 seconds and shuts off. No throttle pedal response P2138 code.is flagging....
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Potential Tuner
I figured that GM has made 15 million or more DBW throttles and some of them must have failed. When mine failed, I just pulled over to the side of the road, waited a few minutes then everything worked fine again until it failed. Just get a new throttle pedal. Watch the video here on YouTube
https://youtu.be/j8JuRuH3aMw