One wheel wonder?

brad194 · January 26, 2007

I have a 90 GMC C1500, and today I went out to move it (it hadn't been moved for several days), and it was caught on some ice. When I first put it in gear, the passenger side wheel would move and spin on the ice, but the drivers side one does not. I think had the drivers side wheel moved it would have come off the ice a lot easier. I was wondering why it is like this? Is there a way to get both wheels spinning? I've seen several trucks do burn out in the summer, and they smoke on one tire as well, so I assume that it's supposed to be like this. The rear end is a 10-bolt, and I'm not sure of the ratio, is there a better rear end I can maybe swap in for it?

Thanks

Draenor · January 26, 2007

You can either put in a locker or limited slip in the diff. I would find out what gearing ratio you have. If you do plan to swap gears you can install the locker or limited-slip at the same time.

95Sierra2500 · January 28, 2007

You definately have an open rear differential. This simply means that your rear wheels will not lock together. A locking rear differential (or at least a limited-slip) would help you out alot here.

builderpaul · January 28, 2007

Your can find what ratio your truck came with, as well as lots of other info, from the RPO codes listed in your glove box. Compare them with the listings from the guide on the left of your screen.

You have an open rear end. A locker is a factory option on these trucks. If you had it there would be a G80 on your RPO sheet.

brad194 · January 29, 2007

Thanks for the reply guys, I'm looking for a parts truck now, so I may be lucky enough to find one with the right rear end. I've found out an open differential is not exactly ideal for winter driving.