eddieo818 Posted August 28, 2008 Report Share Posted August 28, 2008 Quote Link to comment Share on other sites More sharing options...
03CHEV SS Posted August 28, 2008 Author Report Share Posted August 28, 2008 I just talked to the mech. and he do the security relearn. He is also telling me that the computer is NOT communcating to tech tool from the ALDL connector. Quote Link to comment Share on other sites More sharing options...
benjaminh2 Posted August 28, 2008 Report Share Posted August 28, 2008 (edited) I just talked to the mech. and he do the security relearn. He is also telling me that the computer is NOT communcating to tech tool from the ALDL connector. that means 1 of 3 things, either the pcm is no good (highly unlikely), a serial data prob (also unlikely) or theres a pwr. ground prob at the pcm. i'll attach a schematic for pcm pwr/grnd. half of the pcm pwr circuts pwr up off the ignition switch... Edited August 28, 2008 by gmperformanceguy (see edit history) Quote Link to comment Share on other sites More sharing options...
benjaminh2 Posted August 28, 2008 Report Share Posted August 28, 2008 totally forgot, krambo reminded me, check the 15amp cigar fuse. that powers up the aldl... Quote Link to comment Share on other sites More sharing options...
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