Does my 2006 chevy trailblazer have a timing belt or chain?

Three engine options exist for the 2006 Chevrolet TrailBlazer, ranging from A4.2L 6 cylinder to A6.0L V8, with A5.3L V8 in between. All configurations in model year 2006 use a timing chain, which can be good or bad news, depending on which side of the argument You fall. However, most experts agree that chains are superior. You typically will never have to touch or look at Your timing chain if You keep up with proper maintenance, as they have an estimated lifetime of over 250,000 miles. With that said, bad things do happen, so You may find Yourself in a situation where You need to replace. Unfortunately, it'll cost You; perhaps up to $3,000, not including any damage to other engine components that the failure may have caused.