Originally Posted by civdiv99

If you have EHC2 (4whl self-level), then your system doesn't use the 30 amp fuse. If you have EHC2, then your compressor system is a 50 amp fused circuit. In front of the spare tire is a fuse block. Pop off the white cover and note the 50 amp fuse (designated F204) with red/blue wire. Trace that wire and you will see that it goes to your air system compressor assy, no detours. If you have this system then your relay (designated K126) is under the compressor housing. It is still removable, just more work.

See the attached pics; note the red/blue wire.

Note: If you have EHC2 AND your sticker on the back of the passenger side rear cover (fuse block and subwoofer cover) says that fuse 87 (30A) is your air suspension, it's lying to you. Very easy to pull the white cover in front of the spare and see for yourself.