You might think that with the heavy-duty slogans used by GMC, every vehicle they make would come with a big, metal GMC timing chain instead of a puny GMC timing belt. Not only is that not true, but it makes some incorrect assumptions about the nature of the GMC timing chain and the GMC timing belt too. First off, most GMC trucks do still use engines that utilize a traditional GMC timing chain to operate the camshaft. There's a small metal gear on the crankshaft, a large metal gear on the camshaft, and the GMC timing chain in between to drive the components. But on many of the newer engines, a GMC timing belt is used instead. For lighter weight (which translates into better fuel economy) and quiet operation, you can't beat a GMC timing belt. Not to mention that the GMC timing belt is really a marvel of engineering. It's incredibly strong and generally won't fail when it's replaced at the proper intervals. Granted, a GMC timing chain won't fail either, but it can stretch over time, which leads to poor engine operation. If your fuel economy is way down, your engine refuses to be tuned, and the power is off by a few horses, your GMC timing chain is a big suspect. So, whether it's time for a scheduled GMC timing belt replacement or your old workhorse finally needs a new GMC timing chain, jump online and order your parts from us. We can supply the finest OEM GMC timing belt sets and GMC timing chain components for your truck or SUV and we can get them to you quick. Best of all, you'll get a better quality GMC timing belt or GMC timing chain than you'd get from the local chain store and we can usually beat the price!