2015-2022 2nd Gen 2018 Chevy Colorado GMC Canyon Serpentine Belt & Tensioner Replacement 3.6L V6

Introduction

This tutorial provides a step-by-step guide for replacing the serpentine belt and tensioner on a 2018 Chevy Colorado or GMC Canyon with a 3.6L V6 engine. Whether you're experiencing a squeaking noise from your belt or simply want to perform preventative maintenance, this guide will walk you through the process efficiently.

Step 1: Gather Necessary Tools

Before starting the replacement, ensure you have the following tools:

• 3/8 inch ratchet with a long handle for better leverage
• Torque wrench (set to 43 lb ft for the tensioner pulley bolts)
• 13 mm deep well socket for tensioner bolts
• 15 mm socket to loosen the tensioner
• Stool or step ladder for better access if needed

Step 2: Remove the Air Intake Cover

• Locate and remove the air intake cover to access the serpentine belt.
• If you're unsure how to remove it, refer to the link provided in the video description for detailed instructions.

Step 3: Note the Belt Routing

• Before removing the belt, take a picture or make a note of how the serpentine belt is routed around the pulleys.
• Check pulleys like the water pump, alternator, and AC compressor for correct routing.

Step 4: Loosen the Tensioner

• Attach the 15 mm socket to the ratchet and turn the tensioner counterclockwise to relieve tension on the belt.
• Once loosened, carefully remove the belt from the pulleys.

Step 5: Remove the Old Tensioner

• Identify the two 13 mm bolts securing the tensioner. One is at the top, and the other is underneath.
• Use the deep well socket and your ratchet to remove both bolts.
• If access is difficult due to nearby components (like power steering lines), adjust your socket extensions as needed.

Step 6: Install the New Tensioner

• Position the new tensioner in place.
• Use the 13 mm bolts to secure it, ensuring not to mix them up as they are identical.
• Torque the bolts to the specified 43 lb ft.

Step 7: Install the New Serpentine Belt

• Refer to your routing notes or picture and place the new belt onto the appropriate pulleys.
• Ensure that the ribbed part of the belt is properly seated on all ribbed pulleys, and that it is aligned correctly.

Step 8: Final Checks

• Once the belt is installed, double-check the routing and that all ribs are seated properly.
• Rotate each pulley by hand to ensure they spin smoothly without any binding or noise.

Step 9: Replace the Air Intake Cover

• After confirming everything is in place, reinstall the air intake cover.

Conclusion

Replacing the serpentine belt and tensioner can prevent unexpected breakdowns, especially in colder weather. Following these steps will ensure a successful installation. Always refer to your vehicle's manual for specific torque specifications and additional guidance. If you have any questions or need further assistance, feel free to reach out or consult a professional mechanic.