4l60e is not shifting out of 2 or 3 ?
#4
Launching!
Join Date: Feb 2010
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You need to get codes and go from there.Theres alot of things that could put it in failsafe thats why you need to scan first.post code #s when you get them.
#5
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You are in limp mode. My guess is that you have an electrical issue. Does your speedo work? If not, there is part of your problem. Also, do you have a high-stall torque converter? If so, you need to tune out the test for the P0757 code in the PCM. Scan for codes and let us know what you find.