2002 denali AWD how to test rear air ride??????

[kses123]

They most likely did not do anything to disable it. The vehicle is 11 years old, so there is a good chance that the compressor is shot. It is common for them to fail, especially if it has been exposed to harsh conditions, like salty roads.

 

[yates ™]

They most likely did not do anything to disable it. The vehicle is 11 years old, so there is a good chance that the compressor is shot. It is common for them to fail, especially if it has been exposed to harsh conditions, like salty roads.

Air leaks are the most common killer of compressors which can happen from the conditions that Keith mentioned. I am not sure of where the fuse is on this system but to my knowledge the system cannot be disabled. Does the warning come up in DIC or a warning light?

 

[WDE]

Not to change subject but my wife just called and she was driving the truck down the road and before I tell you the codes I just cleaned my k&n filter 2days ago and replaced the pcv valve here are the codesC0265
P0101
P0300
P0332 this one was on there 3 times

---------- Post added at 03:34 PM ---------- Previous post was at 03:29 PM ----------

Oh and washed the motor

 

[kses123]

None of those codes have anything to do with the electronic suspension. the 40amp large fuse (#1) in the electrical box is for the suspension compressor/trailer wiring. Check that fuse.

There is also another fuse, RTD (Real Time Dampening) #28, but if it were bad, it would have a message pop up in the DIC.

 

[WDE]

Right what could these be

---------- Post added at 03:40 PM ---------- Previous post was at 03:38 PM ----------

I have one missing and its label AIR and 40amp n both studs are present a 40and 30amp