So i have a 98 nav. The air pump was bad as i came out to find my Nav sitting almost on the ground, great for those low ride lovers. Anyway replaced the air pump with a brand new one. Driving the truck for 1 hour and the check suspen. light comes back one. The airbags are new, and all the hoses are new, i just was at the dealership and they checked this all out. So what gives. When the last time the check susp. light came on they did a scan, but the scan didn't show anything was wrong with the suspension. any ideas ? thanks.