06 Buick rainier cxl differential locking up
I have an awd 06 Buick Rainer (cxl) that I recently replaced a back tire on. The back differential is locking up on it, and I'm being told this is the reason why. I also have other misfire and broken bolt issues with it as well, but I don't want to pay $3300 to repair these, if this is not the issue with the back end, and have myself in a world of debt fixing the differential issue after this. I also had a stabilitrack warning light on, as well. The garage is 4 hrs away, so I'm basically doing this over the phone. Would one new tire cause this? Should the garage be able to tell why it's locking up without replacing the tires first (they wanted me to pay $1200 for a new set of tires, as well, but I have a set, and wondering if they were just trying to push the tire sale on me before actually diagnosing the problem first)? The vehicle is a rebuild, I've had no other probs with it up until now, and it says 300,000+ *miles* on it, but I'm assuming the motor has been replaced. The price of vehicles up here is ridiculous ($7- 9000 used pos), so paying $3300 for repairs is reasonable considering the alternative. It ran great before I drove it hard for 4000 kms across BC, and then 700 kms a month after this for 4 months, and with no garage here, I had to tow it out when broke down. I love the vehicle, but if I'm going to need to put more money in after this, I'm going to have too much invested, whereas now I can still back away. I hope u understand what I'm trying to explain, and any advise would be greatly appreciated
