Performance Radiator for GMC Canyon (2009-2012) 5.3L Automatic
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High-Efficiency 3-Row Aluminum Performance Radiator for 2009-2012 GMC Canyon
Direct-Fit Cooling Upgrade: Replaces the failure-prone factory plastic-tank radiator with a TIG-welded, 3-row all-aluminum core designed to maintain optimal thermal regulation under heavy towing and high-load operating conditions.
The Stock Canyon Thermal Bottleneck
The factory GMT355 cooling system relies on a crimped plastic end-tank design with a thin, single-row core. Under sustained thermal cycling and heavy torque loads from the 5.3L LH8/LH9 V8, the factory plastic tanks become brittle, causing stress cracks at the tank-to-core crimp seals. Additionally, the narrow stock core quickly succumbs to heat soak when towing or idling in high ambient temperatures, driving coolant and transmission fluid temperatures into critical zones.
The Engineering Solution
This drop-in unit eliminates OEM failure points using 100% aircraft-grade aluminum construction with precision TIG-welded tanks. The 3-row downflow racing tube configuration maximizes surface contact area and fluid dwell time, yielding a significant increase in heat rejection efficiency over stock. It features an integrated internal M14 x 1.5 transmission oil cooler to stabilize automatic transmission fluid temps, reinforced mounting brackets, and a high-pressure radiator cap tested to prevent cavitation under heavy loads.
Technical Specifications
| Fitment | 2009-2012 GMC Canyon |
| Engine / Chassis | 5.3L LH8/LH9 Vortec V8 / GMT355 |
| Stock Output | 300 hp / 320 lb-ft (Approx) |
| Core Dimensions | 23.2 in W x 18.7 in H (3-Row Downflow) |
| Overall Dimensions | 25.6 in W x 24.1 in H |
| Inlet / Outlet | 1.4 in (Passenger) / 1.5 in (Driver) |
| Trans Cooler / OE Interchange | M14 x 1.5 / DPI 2855, CU2855, 25964053, 25964054 |
Compatibility
- 2009 GMC Canyon 5.3L V8 Automatic (Extended Cab, Crew Cab)
- 2010 GMC Canyon 5.3L V8 Automatic (Extended Cab, Crew Cab)
- 2011 GMC Canyon 5.3L V8 Automatic (Extended Cab, Crew Cab)
- 2012 GMC Canyon 5.3L V8 Automatic (Extended Cab, Crew Cab)
- Note: Fits 5.3L V8 automatic models only; does not fit 2.9L I4 or 3.7L I5 applications.
The GMC Heavy-Duty Standard
Engineered to handle severe-duty towing and demanding payload duty cycles, this all-aluminum radiator delivers reliable, zero-leak cooling reliability and ensures stable engine and transmission operating temperatures across any terrain.
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