ABS and Service trailer brake lites

[RLfive7]

I have a 2007 GMC sierra slt 2500hd w/duramax 6.6 2 wheel drive intergrated brake.On vacation with fifth wheel camper out of state 200 miles from home. abs light and service trailer brake came on took to dealer and replaced right front speed sensor part #22873507 cleared code on way home abs and service trailer brake came back on read code when home and c0040 again right front speed sensor also c0131 figured bad sesor from dealer put another new speed sensor cleared codes as soon as the truck is moved abs and service trailer brake lights come back on again code c0040 but no c0131.??????????? Help in crazy ANY answers.

[gmtech4]

just because it says the problem is in the sensors circuit doesnt mean its the sensor ,,,,

 

the code HAS to be diagnosed from start to the end

 

simple ,,,find a different dealer

[8.1HD/ALLISON]

+1

 

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