My 2000 Firebird automatic is having the same problem, but no engine codes showing up...
Just will not go into 4th gear. The transmission had parts recently replacedand also the gear box, but still doing the same thing...
We nw suspect it's the computer... How do we fix this?
If it's the computer, then how do we fix the computer??
Any ideas??
You have to scan it. The transmission is shifted by the computer and if it detects a problem, it defaults to 2nd gear and will not shift.
Can't do anything more without codes.
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