Suspension Torsion Bar Problems of Chevrolet Colorado

Abnormal tire wear and suspension noises on Chevrolet Colorado 4 x4 2005 model. With less that 20,000 miles both front tires were worn into the steel belts. I replace both tire and had the front end aligned by a local tire store. 5000 miles later the insides were wearing again. This time I took the truck to the local Chevrolet dealer in anderson,SC. I had several items to be addressed before my original warranty expired. One of these items was the front end assemby- squeaks and rattles plus the tire wear. The local dealer kept my truck overnight and reported that I probably needed to get the front-end aligned and I would have to pay for this service because the original tires were not on the truck. The original tires were not on the truck because they were worn out. I had visited my car stats. Com to read problems associated with 2005 Colorado. One complaint number 10156778 told of a gm service bulletin concerning torsion bar setup on the Colorado. I asked the Chevrolet dealer to check service bulletin 1686447. They reset the entire front end. I will not know whether or not this fixed the situation until enough miles have been placed on the truck to check for wear. I really appreciate the " mycarstats. Com "website. Without this information my local dealer would have done nothing to fix this problem.

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Excessive front tire wear on inside edge of tire - both tire. My problem with the front end on my 2005 4x4 according to the gm, the cause: 4wd models z-height trim incorrect, result is toe out. This mentions in gm reference: id # 1686447 or # 04-03-07-004b July 22, 2005 it's not an alignment problem, it's the torsion bar. The bars are not adjusted correctly in the factory. These trucks were coming out of the factory screwed up. TSB's address this problem by adjusting the z-height (torsion bar adjustment).