GMC Sierra 1500 Radiators and Coolers
This page brings together radiators and coolers for the GMC Sierra 1500 spanning model years 1999–2026, covering components from automatic transmission oil coolers and radiators to engine coolant reservoirs and oil cooler line connectors. Select your year above and we'll show only the radiators and coolers that fit your GMC Sierra 1500. Fitment is checked against our vehicle data for every part listed.
Hayden Automotive 679 Rapid-Cool Plate and Fin Transmission Cooler
Derale Performance 13950 Atomic-Cool Transmission Cooler Kit with 500 CFM Electric Fan -6AN
Hayden Automotive 677 Rapid-Cool Plate and Fin Transmission Oil Cooler Kit
Derale Performance 13700 Electra-Cool 16-Pass Remote Fluid Cooler with 650 CFM Fan -6AN
Derale Performance 13750 15 Row Atomic Cool Remote Fluid Cooler with Fan -6AN
Hayden Automotive 678 Rapid-Cool Transmission Oil Cooler 11" x 9.5" x 0.75"
ACDelco 21650 GM Original Equipment Aluminum Crossflow Radiator
Mishimoto MMTC-K2-14 Automatic Transmission Oil Cooler Kit for Chevrolet Silverado 1500
Mishimoto MMTC-GMT-99 Performance Transmission Cooler, Stacked-Plate Core
What's here for your GMC Sierra 1500
- Automatic transmission oil coolers, including heavy-duty and performance fitments
- Radiators, available in OE replacement and upgraded configurations
- Engine coolant reservoirs and reservoir caps
- Engine oil cooler line connectors
- Related hardware and gasket kits for cooling system service
The widest selection here comes from Dorman, Hayden Automotive, ACDelco, and Keystone, each carrying a broad range of cooling system parts across the Sierra 1500's many model years. Other categories GMC Sierra 1500 owners shop for: GMC Sierra 1500 Shocks and Struts, GMC Sierra 1500 Springs and Suspension Parts and GMC Sierra 1500 Exterior Lights, or browse all GMC Sierra 1500 parts and accessories.