Greetings,

Your mission, should you choose to accept it, but I warn you, it will be tiring.

Hoping to find someone who can read GM TBI logs and know what they mean. Long story VERY short: '93 Suburban, new engine. On a cold start, regardless of ambient temperature it will run for 20 seconds just fine, then it goes way rich for about 45 seconds then back to normal and we're good to go with no further issues. I have replaced everything I can think of...twice. I'm at my wits end....anyone?

I have a thread on a GM forum if anyone really wants more detail. I've worn out the GM people, they are stumped.


https://drive.google.com/open?id=175...VtAvN5pIBK6U4H

Thanks!