Seapro
TYF Newbie
In 2015 I decided to purchase a bigger tow vehicle to tow my boat. I purchased a 2007 Yukon Denali with 144,000 miles on it. Since owning this Yukon I have been constantly having the "Check Suspension" message every time I tow or go on long distance rides. I have changed my air compressor, air shocks, compressor relay, all the auto leveling sensors and just recently the suspension control module. I finally have not gotten any suspension messages after towing my boat 20 miles. I am writing this to maybe help someone that was or is having the same problem I had. I changed the air shocks after checking if they held air and they were leaking and after changing them and starting the Yukon they did not pump up. I found that the 40 amp fuse was blown to the compressor. I replaced the fuse and the pump still did not come on so I pretty much knew the pump was dead so I replaced it and the shocks pumped up. i thought I was good to go, wrong. I towed the boat a couple of weeks later and on the way home I got the suspension message again. I started looking at every wire and sensor I could find for the suspension and I noticed a snapped leveler so I decided to change all four of them. I got another message the next time I towed the boat. I only had the electronic suspension module left to check. When I dropped the spare tire down I saw that the module had been removed off the frame and was just hanging there. I brought the module to the dealer and paid to have it checked and it was fried. I replaced the module and haven't had any problems with it since. Hope this helps if you are having the same problems.