U7192 & Hummer H2

HumVtwo · Post by **HumVtwo** » Fri Feb 23, 2007 10:17 pm

I have a Hummer H2 w/ cat back exhaust, intake and Granitelli MAF. When I install either the 87 tune or the performance tune my display on the truck shows "Decreased Engine Power" and seems to have less throttle response?
Can you help me manually tune it? Or is there something wrong with the tuner?

Thanks,

johan · Post by **johan** » Sat Feb 24, 2007 12:09 pm

While you install either of the tunes it is normal for that message to appear in the dic, once you do the key cycle after install it should clear itself. If it does not you can go to Diagnostics and clear DTC's this will clear the message as well. The message comes on because while we write the program to the vehicle we cut communication to all other modules in vehicle and that message comes on when loss communication from the etc occurs.

HumVtwo · Post by **HumVtwo** » Sat Feb 24, 2007 1:36 pm

Thanks, I will give it a try.