Abs Light After Pcm4less Tune

[stlavsa]

I just had 35" tires, 1.5" coil spacer (added to fabtech), and PCM4Less tune done on my 08 1500. I had the tune to reduce the torque management, and correct for speedo, and basically 87 octane and tranny tune for 35" tires.. Within about 5 miles of driving the ABS light came on. Truck shut off, light went away, drove another couple miles, ABS light is back on. Dont know what code it is yet..

 

 

I know that the 1.5" coil spacer added to the fabtech lift as the UCAs maxxed and the abs wires and brake lines are a litle tight but from what i have been told, the bump stops are keeping it from pulling any wires out, and everything looks fine there.

 

The only differences are the PCM4Less tune and went from 305/55/20s to 35x12.5x20s. Never had an abs light before. I dont know where to start?

[GasHog369]

I'd bet its not the tune.. but a wire , sensor , or brake line..

[stlavsa]

I'd bet its not the tune.. but a wire , sensor , or brake line..

 

Got the codes... cant remember the numbers, but its code for speed sensor frequency.. Says one wheel is 15% off.. 2nd code is something like disconnected from main module.. Dont know that the 2nd code is a new code though.

[stlavsa]

turned out to be the tune, simple mistake he tuned for the wrong tire size.. Wheeew

[GasHog369]

good to hear