Aluminum Radiator for GMC Terrain (2018-2020) 1.5L, 2.0L

Direct-Fit All-Aluminum 3-Row Performance Radiator for 2018-2020 GMC Terrain (D2XX)

What it Does: The all-aluminum 3-row radiator replaces the crack-prone factory heat exchanger on the 2018-2020 GMC Terrain to maximize thermal dissipation and prevent coolant loss under sustained boost conditions.

The Stock GMC Terrain Plastic End Tank Failure

Factory radiators installed in the D2XX platform utilize crimped composite plastic end tanks bonded to a thin single-row aluminum core with elastomer gaskets. With continuous thermal cycling from the turbocharged LYX 1.5L and LTG 2.0L engines, OEM plastic tanks become brittle, causing seam separation, hairline cracks at the inlet necks, and micro-leaks under standard operating pressure. Furthermore, the stock core design suffers from heat soak during heavy cargo towing or prolonged uphill climbs, reducing heat rejection capacity when thermal loads spike.

The Engineering Solution

This high-efficiency replacement features a 100% all-aluminum 3-row tube-and-fin core engineered to dramatically increase coolant contact area and fluid volume over OEM unit CU13682. The heavy-duty aluminum end tanks are fully TIG-welded to the core headers, completely eliminating crimped plastic junctions and mechanical failure points. Optimized fin density maximizes airflow heat transfer across the core surface, maintaining lower continuous operating temperatures and stabilizing cooling circuit pressures without modifications to the stock mounting points.

What's Included

• 1 x All-aluminum 3-row performance radiator
• Protective transport caps on ports

Technical Specifications

Compatibility

• 2018-2020 GMC Terrain 1.5L L4 Turbo (LYX)
• 2018-2020 GMC Terrain 2.0L L4 Turbo (LTG)

Frequently Asked Questions & Fitment Warnings

Does this fit the D2XX Terrain?

Yes, this is a direct fit for the 2018-2020 GMC Terrain equipped with the LYX 1.5L or LTG 2.0L engine. Does not fit 1.6L LH7 turbo-diesel variants.

Do I need to bleed the cooling system after installation?

Yes, you must perform a full cooling system flush, refill with OEM-specified Dex-Cool 50/50 mixture, and bleed all trapped air to prevent hot spots and overheating.

The GMC Durability Standard

Engineered for sustained crossover hauling, this TIG-welded aluminum unit handles the heat and vibration stresses of turbocharged daily driving and towing without failure.