Good day everyone.
I've been reading up on this and some posts are old, some with no replys...
I've got a car here 1998 grand prix 3800 S/Ced V6, I'm unable to read the PCM. It reads to 43.3% then Fails everytime. This car has been tuned by someone else using HPTuners.
I've tried multiple different things, rebooting, letting it sit, battery disconnect, etc... Nothing works and same spot everytime 43.3% Failed!
If a PCM is locked will it still read or will it fail?
I've never came across a locked PCM before.
Please fill me in, thank you in advance.