2004 lb7 cali emissions truck.

Bonestock

Active member
Aug 9, 2010
1,358
1
38
Worland Wy
I have a weird issue going on with the dsp 5 switch. I logged the switch voltages and they all change. I log the dsp5 tune and it stays on non dsp5. Tune not switching. Then the real weird thing is that when I hit dsp5 position #2 the truck @ idle will try to rev to the moon! Has anyone else had an experience like this one?