Like her skin, rubber dries and cracks with time-it"s a reality of life. Combined with intense engine heat, even the toughest belts deserve to fail, for this reason don"t wait too lengthy to check your truck"s serpentine drive belt.


This article applies to the Chevrolet Silverado GMT900 (2007-2013).

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The engine"s serpentine belt is a belt that runs turn off the crankshaft pulley and also powers the engine"s accessories, consisting of the power steering, air conditioning, water pump, and also alternator. As soon as the belt fails, those accessories go through a wayside.

This is one of those precautionary maintenance operations the you"ve constantly dreaded. But in reality, the lull of removal and replacement the a serpentine belt on your Silverado is less complicated than an altering an old power steering belt top top a "68 Pontiac. Honest!

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Step 1 – open the hood and locate the stress pulley

Release the hood and also inspect the serpentine belt. If it requirements replacement, then find the tension pulley. The tension sheave is located on the left side of the engine, it has a 16mm bolt at the center of it.

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Figure 1. The tension wheel is spring loaded, and also is located on the left (facing the engine).
Pro TipsChecking in with company advisers and fellow Chevy van owners, many agree the you have to replace the belt prior to 120,000 miles, also if the belt look at okay.Using a 1/2" ratchet or 1/2" breaker bar v a 16mm socket will provide you extra leverage power once you pull to be sure the belt tension.

Step 2 – eliminate the old belt

Remove the belt by advertise downward ~ above the ratchet handle. Then, on slide the belt indigenous the alternator.

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Figure 2. The spring invited tensioner will certainly release the belt easily!
Tip

While the belt is off, inspect all of the pulleys. Inspect to ensure that they space noise-free and spin easily. If friend see any type of pulleys binding, they have to be replaced.

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Step 3 – install the new serpentine belt

Hold the belt on the alternator with your best hand while snaking the belt about the crank, water pump, and also idler pulley. Then, pull under on the tensioner pulley with your ratchet and slide the belt over it.