Loss of Fuel Mileage– Fuel mileage will suffer when the engine is no longer kept in time.It’s highly likely that the engine is going to be misfiring as well. This will lead to a performance decrease. If the timing belt has moved, that means that the valves will open and close at the wrong time. The timing belt is responsible for keeping the camshaft(s) in sync with the crankshaft. Performance Decrease– If the timing belt has jumped a few teeth, but hasn’t fallen or broken off yet, it can knock the engine out of time.It’ll typically be a rough rattling sound, and it is often most noticeable right when you start up your Silverado. There may be a sound of rubber beating against something.

Noise– A good indication that a timing belt has gone bad is going to be noise.If this is the case, the damage is already done. You might hear it slapping around as the engine cranks over. Engine Won’t Start– If your Silverado’s timing chain or belt has fallen off completely, broken, or has jumped a few teeth, it is entirely possible that the engine won’t even start.Here are some of the most common signs of a bad timing belt on the Chevy Silverado: They are most commonly found on four cylinder engines.Ĭhevy Silverado: Bad Timing Belt/Chain Symptoms Smaller cars, particularly Japanese made ones, can use timing belts instead of a timing chain. You’re much more likely to find a timing chain in cars and trucks than belts. For all intents and purposes, they create the same symptoms when they go bad. Here’s more on a timing chain vs a timing belt. Timing belts are made out of rubber and nylon, unlike a timing chain which looks a lot like a bicycle chain. It’s important to know the symptoms of a bad timing belt or chain, so this doesn’t happen to your Chevy Silverado. If it jumps a tooth, or breaks entirely it can lead to permanent engine damage. A bad timing belt or timing chain can be a serious issue.

Timing chain symptoms