95 riviera

[chrissbee77]

Hi i have a fully loaded 95 riviera. It has the check engine light on and its odb1. somenoe told me that you can scan it myself by pressing a button combination on my DIGITAL TEMPERATURE CONTROLS, (the a/c and heat) how do i do this and how do i read the codes.

[maxwedge]

Off and warm if it works on this car. Similar to Cadillac with OBD1

[HotZ28]

IIRC, this feature does not work on any display newer than 1993!

[sprucegoose]

If it is an OBD1 can't you just bridge the two terminals on the plug and get the code from the flashes on the SES light? I haven't done that for a while as all my cars are OBD2 so I forget exactly what pins you jumper, but they are right next to each other.

I even got a little tool years ago from AutoZone called a "code key" and it just bridges the two terminals there...

[maxwedge]

Originally Posted by HotZ28

IIRC, this feature does not work on any display newer than 1993!

Yeah I thought that function was eliminated around then.

[maxwedge]

Originally Posted by sprucegoose

If it is an OBD1 can't you just bridge the two terminals on the plug and get the code from the flashes on the SES light? I haven't done that for a while as all my cars are OBD2 so I forget exactly what pins you jumper, but they are right next to each other.

I even got a little tool years ago from AutoZone called a "code key" and it just bridges the two terminals there...

95 was a transitional year called obd1.5 by the repair industry, you will need a scanner capable of accessing this pcm.