2500HD Fan Belt broken

Laurent Kim · June 4

I started having an overheat issue and noticed that the radiator fan belt is cut. Is that serpentine belt? If so, is it covered under driver train warranty?

gemarsh · June 4

5 hours ago, Laurent Kim said:

I started having an overheat issue and noticed that the radiator fan belt is cut. Is that serpentine belt? If so, is it covered under driver train warranty?

No. Just like hoses, belts, wiper blades, clutch discs, and brake pads. Considered wear items.

Laurent Kim · June 5

Is this the fan belt? If so, is it the right part?

gemarsh · June 5

I would say yes, if that is your configuration.

I would find out what was the cause of it getting cut, before installing the new belt.

shadow gray 2020 hd · June 6

Definitely need to inspect the area around the belt to find out how it got cut. Not likely covered under warranty, unless there was some other issue that caused it. If the water pump pulley bearings froze up, it would cause a belt to rip. In that case, if you are still under bumper to bumper it should be covered.

newdude · June 6

On 6/4/2023 at 12:16 PM, Laurent Kim said:

I started having an overheat issue and noticed that the radiator fan belt is cut. Is that serpentine belt? If so, is it covered under driver train warranty?

On 6/4/2023 at 9:22 PM, Laurent Kim said:

Is this the fan belt? If so, is it the right part?

Need more info here. What engine do you have, 6.6 gas or 6.6 Duramax? Single or dual alternator?

gemarsh · June 7

7 hours ago, newdude said:

Need more info here. What engine do you have, 6.6 gas or 6.6 Duramax? Single or dual alternator?

OP profile lists 6.6 diesel. Single and dual alternators have a different fan belt? If so, do they have a different tensioner or water pump?

newdude · June 7

13 hours ago, gemarsh said:

OP profile lists 6.6 diesel. Single and dual alternators have a different fan belt? If so, do they have a different tensioner or water pump?

Honestly, I was thinking these were set up like the older Duramax with just one belt but I am wrong.

It appears these new ones are a two belt system, with the water pump/fan being on its own belt and goes to the balancer, the fan pulley and a dedicated tensioner. And this is something that started with the 2020 L5P. 2019-prior Duramax including L5P are a single belt.

Laurent Kim · June 8

On 6/6/2023 at 10:35 AM, newdude said:

Need more info here. What engine do you have, 6.6 gas or 6.6 Duramax? Single or dual alternator?

I have the Duramax with one alternator.

GMCustomerService · June 13

On 6/4/2023 at 12:16 PM, Laurent Kim said:

I started having an overheat issue and noticed that the radiator fan belt is cut. Is that serpentine belt? If so, is it covered under driver train warranty?

This is certainly not what we like to hear, Laurent Kim. Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your truck. To do so, please send an email to [email protected] with ATTN: Laurent Kim/GM Trucks in the subject line.

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