One Stop Solutions 2538 Radiator

Radiator for OE-Style Cooling Performance

This OSC Premium New Automotive Radiator is built for direct replacement service with OE form and function. It is engineered for the 2001-2002 Chevrolet Silverado 2500 HD, 2002 Chevrolet Avalanche 2500, 2001-2002 Chevrolet Suburban 2500, 2001-2002 GMC Sierra 2500 HD, and 2001-2002 GMC Yukon XL 2500 applications listed below.

Part number 2538 is a crossflow radiator with plastic tanks, a PA core, and integrated engine and transmission oil cooler provisions for the specified vehicles. The design focuses on factory-style fitment, stable cooling performance, and a clean drop-in replacement for high-mileage trucks and SUVs.

Key Features

• Fits 2002 Chevrolet Avalanche 2500, N/A, with 3/8" TOC fittings and 4-speed transmission
• Fits 2001-2002 Chevrolet Silverado 2500 HD, N/A, with 3/8" TOC fittings
• Fits 2001-2002 Chevrolet Suburban 2500, N/A, with 3/8" TOC fittings and 4-speed transmission
• Fits 2001-2002 GMC Sierra 2500 HD, N/A, with 3/8" transmission oil cooler fittings
• Fits 2001-2002 GMC Yukon XL 2500, N/A, with 3/8" TOC fittings and 4-speed transmission
• Crossflow radiator design with 2-row core construction
• Plastic tank construction with premium-grade core materials
• Integrated engine oil cooler and transmission oil cooler included
• Plated cooler design for the engine and transmission oil cooler circuits
• Core dimensions: 37 13/16 in. height, 19 7/16 in. width, 2-3/16 in. thickness
• Inlet diameter: 1 9/16 in.; outlet diameter: 1 7/8 in.

Detailed Description

OSC part number 2538 is a replacement radiator engineered to match original equipment form and function for select Chevrolet and GMC heavy-duty applications. The radiator uses a crossflow layout with a 2-row core, plastic tanks, and a PA core material to support consistent heat transfer in demanding cooling systems. It also includes plated engine oil cooler and transmission oil cooler sections where originally equipped.

For fitment-based searches, this radiator is a direct option for 2001-2002 Chevrolet Silverado 2500 HD radiator replacement, 2001-2002 GMC Sierra 2500 HD radiator replacement, and 2002 Chevrolet Avalanche 2500 radiator replacement. It also serves 2001-2002 Chevrolet Suburban 2500 and 2001-2002 GMC Yukon XL 2500 cooling system repairs. This part number 2538 is built for vehicles using the listed 3/8" transmission oil cooler fittings and 4-speed transmission configurations.

This part cross-references Spectra Premium CU2538 for the same application.

Common Cooling System Issues It Can Address

• Coolant leaks from a cracked or fatigued radiator tank
• Restricted cooling performance from an aging or clogged core
• Transmission temperature concerns tied to worn cooler passages
• Engine oil cooler circuit wear in original radiator assemblies
• Fitment problems caused by damaged mounting points or aging OE components

Installation Notes and Tips

Verify the vehicle’s transmission cooler fitting size and transmission configuration before installation. Confirm core dimensions, inlet and outlet sizes, and cooler line routing against the original radiator to ensure the correct replacement.

Part number 2538 is designed as a drop-in style replacement for the listed Chevrolet and GMC applications, but the cooling system should be inspected for hose condition, clamp wear, and contamination before the new radiator is installed. Flush the system if coolant condition is poor or if the previous radiator failed internally.

Quality Assurance

OSC states that each radiator is pressure tested during production, with cooler circuits checked before assembly and the completed unit tested again after assembly. The design also uses factory-style fitting and torque practices, along with enhancements aimed at improving durability and cooling life in higher-mileage vehicles.