96/97 and 98/99 PCM differences or compatibility

[Orpedcrow]

The 0411 probably makes sense for you in other terms right? You’ve got your new motor (can’t remember if it had any head or cam work) and that could open up some opportunities.

It makes even more sense being as I already have a 411, the connectors and diagrams for my truck. Lextech even flashed it.

The only tuning I’ve done was at school like 15 years ago and I’m just not as computer savvy as I used to be. Maybe I could get @L31MaxExpress to road trip one of his scary vans, and meet me at the bucees in Terrell for a little tuneing clean up.

 

[fancyTBI]

My 97 Express and 99 Tahoe both read the ABS and SIR systems same as it did stock.

Awesome. I will revise my post. Thank you for clarifying that.