Cadillac DeVille 1985 to 2005 including:1985-1992
My insurance man (K of C) was over yesterday, and he showed me how to do the "off & higher" buttons to get the computer history.
It showed PO31 hist, and PCM?
This was on my 95 DeVille. He said his 94 DeVille also would come up with that PCM?
Would someone please tell me what that means...