Fits: 2020 thru 2022 Chevy Silverado/GMC Sierra 1500 LM2 Duramax Diesel

Please call for availability

*Limit 2 per customer due to availability*

The LM2/LZ0 Duramax diesel engines feature an advanced Active Thermal Management (ATM) cooling system designed to optimize fuel economy, performance, and emissions. This Engine Coolant Flow Control Valve plays a critical role by precisely controlling the coolant flow from the water pump, ensuring peak efficiency in all operating conditions. It combines a rotary control valve and a block control valve to independently manage coolant flow during warm-up (split cooling), eliminating the need for a traditional thermostat.

The valve directs coolant to critical components such as the turbocharger, EGR system, oil coolers, and heater core to efficiently regulate temperatures. The system also includes a de-gas circuit to remove trapped air, ensuring optimal operation.

Features:

• Advanced thermal management control
• Genuine GM part
• Two control valves for precise operation
• Ensures the engine reaches optimal temperatures quickly while maintaining durability, performance, and low emissions

Includes:

• GM Engine Coolant Flow Control Valve
• Thermostat Housing O-Ring Gasket

DmaxStore Note:

• We have seen customers reporting failure of this part at approximately 100,000 miles. 

Warranty:

• This product carries a 1-year warranty

Replaces Part#:

• GM 24001355
• GM 40009179
• GM 40009644