Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

Cooling fan relay?

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Old Aug 10, 2025 | 10:00 AM
  #1  
NFS's Avatar
NFS
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Default Cooling fan relay?

Does anyone where is the relay for radiator/cooling fan? And if it doesn’t have a particular relay. What relay does it power from? I been looking under the hood but can’t seem to find it

anyone knows the number ?

thank you
 
Old Aug 10, 2025 | 12:59 PM
  #2  
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From: Central Florida, USA
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I'm pretty sure that all H3's -- including the V8's had belt driven fans.

Unless you have an aftermarket electric fan conversion, there is no fan relay. If you have an electric fan conversion, the location of the fan relay (if there is one) would be up to the aftermarket fan kit maker or the installer.

Look for a fan clutch (a big round thing with cooling fins on it) right by the fan itself.

Maybe wrong forum?
 
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