Ride Control Leveller

Grantn · February 10, 2009

I have a 2004 Yukon Denali XL AWD that the compressor for the ride leveller keeps going until the shocks are full, then shuts off.( It seems that the back end is riding high ) I have checked the RTD fuse & it is good. I am thinking that the relay or the height level sensor may be bad. The problem I have is I do not know where these 2 are, or if these are even the problem. I am receiving no error on the DIC. When I pull the RTD fuse the compressor does not kick in. Can I drive without that fuse in? Will it damage the ride control? Any help would be greatly apprieciated.

Thanks

kses123 · February 10, 2009

I have a 2004 Yukon Denali XL AWD that the compressor for the ride leveller keeps going until the shocks are full, then shuts off.( It seems that the back end is riding high ) I have checked the RTD fuse & it is good. I am thinking that the relay or the height level sensor may be bad. The problem I have is I do not know where these 2 are, or if these are even the problem. I am receiving no error on the DIC. When I pull the RTD fuse the compressor does not kick in. Can I drive without that fuse in? Will it damage the ride control? Any help would be greatly apprieciated.

Thanks

The relay for the compressor is under the hood, attached to the outside of the fuse box. Do not drive without the RTD, as that would remove the electronic damping from the shocks. Then it'd ride like crap. The two height sensors can be seen in the rear wheel wells. Towards the front of the car, just behind the tires. Very easy to spot. Also, the compressor is supposed to start every time you turn the truck on. After it does that, it lets some air out, usually. How long does yours run at start up? It should just come on for like...5 secs, unless you have a heavy load back there, as this would make it take longer.

Grantn · February 10, 2009

I will look today for the relays & sensors. The compressor comes on for longer than 5 seconds. Usually comes on for about 30 seconds. It seems like it fills all the way up then stops. I am also carrying no load. Thanks again, I will let you know my findings.

I have a 2004 Yukon Denali XL AWD that the compressor for the ride leveller keeps going until the shocks are full, then shuts off.( It seems that the back end is riding high ) I have checked the RTD fuse & it is good. I am thinking that the relay or the height level sensor may be bad. The problem I have is I do not know where these 2 are, or if these are even the problem. I am receiving no error on the DIC. When I pull the RTD fuse the compressor does not kick in. Can I drive without that fuse in? Will it damage the ride control? Any help would be greatly apprieciated.

Thanks

The relay for the compressor is under the hood, attached to the outside of the fuse box. Do not drive without the RTD, as that would remove the electronic damping from the shocks. Then it'd ride like crap. The two height sensors can be seen in the rear wheel wells. Towards the front of the car, just behind the tires. Very easy to spot. Also, the compressor is supposed to start every time you turn the truck on. After it does that, it lets some air out, usually. How long does yours run at start up? It should just come on for like...5 secs, unless you have a heavy load back there, as this would make it take longer.

Grantn · February 10, 2009

I just went out and looked at a few things. First i went into the fuse box in the engine compartment. Somebody had mentioned in another thread to check the "Stud 1" and "IGN 3" fuses as they work parts of the suspension. I checked the Stud 1 fuse which seemed loose, so I pushed it down & also checked to see if it was blown. It was good. I could not find the IGN 3, all i could find was the IGN A & IGN B. Both of these seemed not to be blown . I started the truck & the compressor came on for 5 seconds rather than the 40 or 50seconds it was doing earlier. Maybe I just got lucky

Thanks for the help