2021 5.3L Water pump pulley

[Shelbybaddog]

I have a 2021 Silverado Z71 1500 RST with a 5.3L with just over 25,000 miles on it. The water pump pulley fell off. It started with a little chirp noise I thought was the idle pulley. I was surprised to see that there's no tension pulley. 23 miles later the water pump pulley came off. Has this happen to anyone else? Is this press in or screwed in.

[GMCustomerService]

On 7/12/2023 at 10:47 AM, Shelbybaddog said:

I have a 2021 Silverado Z71 1500 RST with a 5.3L with just over 25,000 miles on it. The water pump pulley fell off. It started with a little chirp noise I thought was the idle pulley. I was surprised to see that there's no tension pulley. 23 miles later the water pump pulley came off. Has this happen to anyone else? Is this press in or screwed in.

This is certainly not what we like to hear, Shelbybaddog.  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 the water pump pulley falling off your 2021 Chevrolet Silverado. To do so, please send an email to [email protected] with ATTN: Shelbybaddog/GM Trucks in the subject line.

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[RayRay21]

This just happened to me, it’s not off yet but I caught it with 3 ribs left on the belt. 

[Niklasbraun]

On 7/12/2023 at 5:47 PM, Shelbybaddog said:

I have a 2021 Silverado Z71 1500 RST with a 5.3L with just over 25,000 miles on it. The water pump pulley fell off. It started with a little chirp noise I thought was the idle pulley. I was surprised to see that there's no tension pulley. 23 miles later the water pump pulley came off. Has this happen to anyone else? Is this press in or screwed in.

While I haven't personally experienced this issue, it's something that happens from time to time.

In the 2021 Silverado with a 5.3L, the water pump pulley is usually pressed in. But in your case, just take a look for any signs of damage or wear that could be the reason it popped off out of the blue.

Edited February 14 by Niklasbraun