'88 GMC suburban


#1

Why has my vehicle started making this loud clanging noise when shifting gears? (Automatic) It sounds like someone is hitting a wrench against the metal, most notably between Reverse and Drive. Also, the body of the vehicle is noticeably lower on one side with no flat tires. Any ideas?


#2

The loud clanging noise could be the universal joints. When one goes completely (the roller bearings come completely out), there’s a lot of play, and the hollow tube driveshaft will clang as the pressure is applied from the transmission. Grab a screwdriver, slide under, and give the driveshaft a couple sharp knocks. If that’s the noise, you’ve found it.

I’m not sure about Suburban’s, but Jeeps have (almost) always leaned to one side. As far as I know, it’s just a suspension thing, and nothing to worry about. If it never sat this way before, you could have a weak or failed spring.

Chase