What are the signs of a failing belt tensioner?

A failing tensioner often makes a squealing noise, especially on startup or when the engine is under load. You might also notice excessive belt vibration or premature belt wear. In severe cases, the belt could slip off entirely, disabling your alternator and A.C.

Does this tensioner come with a new belt?

This part is the belt tensioner assembly only. A new accessory drive belt is not included and would need to be purchased separately if your belt also requires replacement.

How difficult is it to replace this tensioner?

Replacing a belt tensioner typically involves releasing tension on the accessory drive belt, removing the old tensioner, and installing the new one. It's a job that can often be done with basic hand tools, but refer to your vehicle's service manual for specific instructions.

Gates Fan Alt. & A.C. Belt Drive Tensioner 38548

Name: Gates 03-09 GMC C7500 Isuzu 6HK1-TC Diesel Fan Alt. & A.C. Belt Drive Tensioner
Brand: Gates
SKU: gates-gates-03-09-gmc-c7500-isuzu-6hk1-tc-diesel-fan-alt-a-c-belt-drive-tensione-t14-882433
Price: 278.59 USD
Availability: BackOrder

Gates 03-09 GMC C7500 Isuzu 6HK1-TC Diesel Fan Alt. & A.C. Belt Drive Tensioner

$278.59

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Gates Fan Alt. & A.C. Belt Drive Tensioner for GMC C7500 and Isuzu 6HK1-TC Diesel. Part# 38548. Ensures proper belt tension.

Key Features

Fits 2003-2009 GMC C7500 and Isuzu 6HK1-TC Diesel vehicles.
Maintains proper tension on the fan, alternator, and A.C. belt drive.
Helps prevent belt slippage and premature wear.
Features a spring-loaded mechanism for consistent pressure.
Built with durable materials for long service life.

This tensioner is designed for 2003-2009 GMC C7500 and Isuzu trucks with the 6HK1-TC diesel engine. Please verify fitment for your specific vehicle.

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Product Details

The spring-loaded mechanism within this Gates belt tensioner is designed to maintain consistent pressure on your accessory drive belt. This is crucial for the Fan, Alternator, and A.C. systems on your 2003-2009 GMC C7500 or Isuzu truck equipped with the 6HK1-TC diesel engine. When the tensioner wears out, you might notice a squealing noise from the belt, or worse, the belt could slip, causing your alternator to stop charging or your A.C. to stop cooling.

Gates builds this tensioner with robust materials to withstand the constant flexing and heat generated by the engine's accessory drive. The internal spring is calibrated to provide the correct tension throughout the belt's life, helping to prevent premature wear on the belt itself and the pulleys it rides on. A properly functioning tensioner is key to keeping these essential systems running smoothly and reliably.

Replacing a worn tensioner is a good idea when you're servicing the accessory drive belt or if you hear any unusual noises coming from that area of the engine. It's a well-built component that helps ensure the longevity of your entire accessory drive system.