5. The Colorado Debacle
The Chevy Colorado has long been a fixture in the GM lineup. The truck was the replacement for the long-running S10 truck. Colorado was something that brought a welcome addition to the GM lineup. But Colorado had a problem that GM has failed to repair to this day. This issue has cost owners thousands of dollars to try and keep these trucks on the road. The Colorado that was equipped with the five-cylinder engine had a notoriously faulty air intake gasket.
This created a leak that causes the truck to have a misfire early on in the life-cycle. GM has ignored this problem for years. Owners of these trucks are stuck trying to repair this problem early on. The fact that Colorado would have such a bad defect and be ignored is a testament to how bad GM has gotten.