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post #1 of 2 (permalink) Old 09-01-2015, 05:38 AM Thread Starter
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Cooling Information

Hey guys I was wondering if y'all have any technical specs on the cooling system for cobalts. Specifically, what I am looking for is the radiator size, radiator coolant capacity, radiator fan CFM, and what stages the fan can run at (two speed, three speed, etc.).

2006 Cobalt LT Stealth Grey Metallic Coupe.
The current mods: ZZP shorty header, Mugen Twin Loop Muffler, American Eagle 17x7s, Nightshade Tinted Tail Lights, Custom Spec-D Headlights, SS 0-140mph Gauge cluster, Custom Made Cold Air Intake, Carbon Fiber wrapped badges, FE5 Struts/Shocks, CM/SSC Springs, SS Shift Knob, SS front bumper, SS Pioneer Sound System, Pioneer GM-A3602 Amplifier, Painted Calipers, MPX Shorty Antenna.

1969 Triumph GT6+ MK2 (350 V8 project car)
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post #2 of 2 (permalink) Old 09-01-2015, 07:00 AM
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Here are the specifications.
The ECM commands Low Speed Fans ON under the following conditions:

• Engine coolant temperature (ECT) exceeds approximately 106C (223F).

• A/C refrigerant pressure exceeds 1 310 kPa (190 psi).

• After the vehicle is shut off, the ECT at key-off is greater than 140C (284F) and system voltage is more than 12 volts. The fans will stay on for approximately 3 minutes.

The ECM commands High Speed Fans ON under the following conditions:

• ECT reaches 110C (230F).

• A/C refrigerant pressure exceeds 1 655 kPa (240 psi).

• When certain DTCs set

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