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No communication on my 1995 cavalier


choernke
05-25-2014, 04:37 PM
Have check engine light on, after I just replaced head gasket now comes on after the car warms up. When I try to communate with car the readers can't connect to PCM how can I tell whats going on if I can't get fault code?

aleekat
05-25-2014, 05:23 PM
A quick google search shows you're not the only one with this problem. Read some of these posts:


http://www.automotiveforums.com/t505607-how_do_you_read_the_obd_codes_on_a_95_cavailer.htm l

http://www.camaroz28.com/forums/f-body-lounge-24/1995-cavalier-engine-code-reading-help-600406/

Tech II
05-25-2014, 10:10 PM
Unfortunately, a lot of '95 GM vehicles were going through a transition between OBD I and OBD II, and most code readers/scanners can't communicate with them....it takes either a GM scan tool, or expensive , high end scanner, to communicate...

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