Our Community is 940,000 Strong. Join Us.

No communication on my 1995 cavalier

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?

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


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...

Add your comment to this topic!