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GMC Sierra 2500 Cooling System Relays

This page brings together cooling system relays for the GMC Sierra 2500, covering model years 1999–2004. The range centers on radiator fan relay kits designed to integrate with the truck's cooling system. Select your year above and we'll show only the cooling system relays that fit your GMC Sierra 2500. Fitment is checked against our vehicle data for every part listed.

1 - 2 of 2 results

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Picture of Painless Wiring Dual Activation Electric Fan Relay Kit

Painless Wiring Dual Activation Electric Fan Relay Kit

40 reviews
Vehicle Specific
from $63
In Stock (10+)
Picture for manufacturer Painless Wiring
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Best Seller Free Shipping
Picture of Painless Performance Fan-Thom II Electric Fan Relay Kit

Painless Performance Fan-Thom II Electric Fan Relay Kit

32 reviews
Vehicle Specific
from $49
In Stock (10+)
Picture for manufacturer Painless Wiring
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What's here for your GMC Sierra 2500

  • Radiator Fan Relay Kits

The widest selection of cooling system relays here comes from Painless Wiring and Derale Performance, both offering kits suited to 1999–2004 GMC Sierra 2500 applications. Other categories GMC Sierra 2500 owners shop for: GMC Sierra 2500 Exterior Lights, GMC Sierra 2500 Doors and Door Parts and GMC Sierra 2500 Body and Paint Equipment, or browse all GMC Sierra 2500 parts and accessories.