I have a 1995 Camaro v6 that I put a lt1 in.

It was a complete lt1 (wiring, computer, tranny, etc...)

The engine runs great..... well maybe... however i am getting a check engine light.

When I hook up a scan tool to it I don't get anything. I have tried using different tools and even let gm try it. Still no read. I double checked my wires from the pcm to the aldl port and according to the gm service manual they are correct.

Has anyone else done this swap and if so did I miss anything?

Please HELP!!!

 

Sometimes you can have a code set but not have the SES light come on. However, anytime the PCM sets the SES light, there is always a code present.

Perhaps you have voltage on the SES wire from another source as in a short. Try disconnecting it at the PCM and see if the light is still on. IF you disconnect the pin from PCM and the wire still has voltage, then the wire is shorted to a source of voltage. Time to buzz out the short.

 

Is the transplanted PCM OBD-I (93-95) or OBD-II (96/97)? Is the scanner the correct one for the PCM you are using?

 

I'll try unplugging the PCM to see if that works.... THANKS


The PCM is OBDI Out of a 95 camaro.