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GMC C2500 Emission Control Relays

This page gathers emission control relays for the GMC C2500 spanning model years 1979–2000, including catalytic converter temperature indicator relays and diesel glow plug relays. Select your year above and we'll show only the emission control relays that fit your GMC C2500. Fitment is checked against our vehicle data for every part listed.

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Nothing in stock matched your search, but here are matching products that are currently out of stock.

Best Seller
Picture of Bosch 77061WS Catalytic Converter Temperature Indicator Relay Representative Photo, actual item may vary

Bosch 77061WS Catalytic Converter Temperature Indicator Relay

36 reviews
Part: 77061WS
Vehicle Specific
$3.77
Ships from manufacturer
Picture for manufacturer Bosch

What's here for your GMC C2500

  • Catalytic Converter Temperature Indicator Relays
  • Diesel Glow Plug Relays

The widest selection here comes from Standard Motor Products, Auto Extra, Motorcraft, and Baldwin. Other categories GMC C2500 owners shop for: GMC C2500 Springs and Suspension Parts, GMC C2500 Shocks and Struts and GMC C2500 Exterior Lights, or browse all GMC C2500 parts and accessories.