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2021 5.3L Water pump pulley

Shelbybaddog
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Shelbybaddog New Member

Shelbybaddog

Posted
Posted

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 Senior Enthusiast

GMCustomerService

Posted
Posted
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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  • 6 months later...
Niklasbraun Enthusiast

Niklasbraun

Posted
Posted (edited)
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 by Niklasbraun
  • 10 months later...
Techtom2001 New Member

Techtom2001

Posted
Posted

I just put a new water pump in a 2021 Silverado for the pulley falling off. 67k miles on the truck. It appears the pulley rusted away. 350 dollars later it's fixed hopefully it will last longer than 3 years.

SDAT4 New Member

SDAT4

Posted
Posted

I had the same thing happen on mine at 75k (at 93k now) except I was towing a boat in 120 degree weather back from Lake Havasu. 

 

The new water pump I got from the Chevy dealer had an updated pulley design.

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