One Stop Solutions 2562 Radiator

Radiator for Buick, Pontiac, Saturn and Chevrolet

One Stop Solutions Part Number 2562 is an OSC Premium New Automotive Radiator built to OE-style form and function. It uses premium-grade aluminum construction with plastic tanks, a crossflow design, and a plated transmission oil cooler to support dependable engine temperature control in the listed applications.

Compatible With 2001-2005 Pontiac Aztek, 2001-2005 Pontiac Montana, 2001-2004 Oldsmobile Silhouette, 2002-2007 Buick Rendezvous, 2005-2006 Buick Terraza, 2005-2006 Saturn Relay, and 2005 Chevrolet Uplander. This radiator is engineered for direct replacement service in vehicles that use the 5/8" core configuration where noted.

Key Features

• Part Number 2562 radiator for OE-style replacement service
• Crossflow radiator design with a 1-row core
• Premium-grade aluminum core with plastic tanks
• Plated transmission oil cooler included; engine oil cooler not included
• Die-cut gasket design to help maintain a leak-resistant seal
• Individually pressure tested during production
• Factory-style fitment with multi-fit engineering
• Hassle-free installation with required fittings or hardware included by the manufacturer

Detailed Description

OSC designs this radiator to match original equipment form and function while addressing common failure points found in higher-mileage cooling systems. The core measures 30 3/8 inches high by 14 7/8 inches wide with a 5/8-inch thickness, and the unit uses 1 5/16-inch inlet and outlet diameters. The transmission oil cooler is integrated into the radiator, with an 11-inch distance between fittings, while the engine oil cooler is not included. Part Number 2562 is a practical replacement choice for Buick Rendezvous, Pontiac Aztek, Pontiac Montana, Oldsmobile Silhouette, Saturn Relay, Buick Terraza, and Chevrolet Uplander applications that call for this configuration.

This part cross-references Spectra Premium CU2562 for the same application.

Common Problems This Radiator Can Address

• Coolant leaks from a worn or damaged radiator tank or core
• Overheating caused by restricted coolant flow or reduced heat transfer
• Transmission fluid temperature concerns related to a failing integrated cooler
• Cooling system performance loss from age-related core deterioration
• Fitment issues when replacing an original radiator with the correct OE-style layout

Installation Notes and Tips

Verify the core thickness and cooler layout against the original unit before installation. This radiator is a crossflow design, so inlet and outlet orientation should be matched to the vehicle’s factory configuration. Inspect hoses, clamps, and mounting points during replacement to help ensure a proper seal and stable installation. Part Number 2562 is listed for 2001-2007 model-year applications, including 2002-2007 Buick Rendezvous and 2005-2006 Saturn Relay.

Quality Assurance

OSC states that each radiator is pressure tested during production, with the transmission and engine oil coolers tested before tank installation and the completed assembly tested again after assembly. The design uses premium materials and factory-style component fitment to support consistent OE-level performance in the listed vehicles.