Hello,
I just got a Hypertech programmer off eBay and plugged it in and get an [COLOR=blue !important][COLOR=blue !important]error [COLOR=blue !important]code[/COLOR][/COLOR][/COLOR] of 91.
Of course it was cheap and buyer beware so I took a gamble.
I think the old [COLOR=blue !important][COLOR=blue !important]user[/COLOR][/COLOR] left the prev VIN info in the programmer -
Anything I can do? Or am I SOL?
Thanks
JK
2003 Tahoe Z-71