u1000 code what is the fix?

Question

what is the code u1000 mean on a 2007 gmc envoy.

Answer 1

The cars computer gets u1000 code when there is a communication error between systems.

I common problem is bad ground, start by checking for corrosion by the battery terminals or acid leaks.

if the car has been in an accident the wiring will have to be checked

 

see diagnostic procedures below