Step 3 – Pry up the tensioner pulley. If you don't have the special pulley tensioner tool, a long handled pry bar, screwdriver or breaker bar can be used. Press the tensioner back to remove the tension on the belt. It will be fairly obvious which direction it has to move.
step 1 :Removing the Serpentine Belt. 0:42. Insert the 18mm wrench into the tensioner. Turn the tensioner clockwise to loosen the belt. Pull the belt off the alternator. Release the tensioner. step 2 :Installing the Tensioner. 1:06. Remove the three 13mm bolts from the tensioner.

Use the belt diagram and step-by-step instructions provided in this video to help you replace the serpentine belt tensioner on your 09-13 Chevy Silverado. step 1 :Removing the Serpentine Belt. 0:31. Attach a 15mm socket and ratchet to the serpentine belt tensioner. Turn the tensioner to loosen the belt. Pull the belt off the tensioner.

The replacement cost of a drive belt is only going to be between $100 and $200 in most cases. The belt itself will cost between $30 and $90 while the labor costs will probably be between $150 and $200. The ease of accessing the serpentine belt will determine how much the labor costs are.
Insert the 3/8 inch drive ratchet into the tensioner. Turn the tensioner clockwise to loosen the belt. Pull the belt off the alternator. Release the tensioner. Pull the belt off by hand. step 2 :Reinstalling the Serpentine Belt. 1:42. Familiarize yourself with the route of the serpentine belt. Stretch the belt by hand. 8. Wrap the Serpentine Belt Over the Tensioner Pulley. Again standing on the driver side, put the slack belt loop next to the tensioner pulley, put the box end of your 15mm wrench on the pulley nut and pull it toward you, then slip the belt over the tensioner pulley, and release the wrench so the tension takes up any remaining slack in the belt. ToE3V.
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    • how to tension a serpentine belt