Hi everyone, we were testing the 4WD which we never use and the switch is getting flashing lights.
We did a lot of upgrades last year, the truck is running real good but yesterday we wanted to use the
4WD and it seems it's not fully engaging guessing by the flashing lights, but the transfer case...
Update !!! We have been working on it pretty much all weekends so we are about to make it run
we will obviously need a tune.
Most likely an emergency tune, because we will swap the complete intake / EFI system to get rid of the old spider.
Here's the mod list :
L31 Bored .30 - 355 Now
Flat...
We are having the same problem on the 96 Yukon, can't set the timing correctly , bought a cheap EML327 works great but none
of the software reads the cam retard parameter, any updates? Thanks !
Tyler, sorry i have been putting a list of parts together, i already have the tune up kit and 1 5/8 Long tube headers.
The Yukon have never been molested or modified before and it's totally stock. Never been opened.
I will buy this gaskets http://www.summitracing.com/int/parts/fel-2802/
This is...