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ENGINE OVERHEATING Diagnostic Aids The engine may overheat due to an intermittent operation of the thermostat. Engine Overheating Step Action Values Yes No DEFINITION: Engine temperature lamp comes ON and stays ON or the temperature gage 1 Did you perform the Diagnostic - Go to Step 2 Go to 2 Inspect the coolant recovery reservoir - Go to Loss Go to Step 3 3 Start the engine and allow to reach IMPORTANT: Do not allow the engine temperature to 107°C (225°F) Go to Step 4 Go to 4 Inspect for loose, damaged, and/or The A/C condenser seals The front air deflector The side seals - Go to Step 5 Go to Step 17 Using the J 23688 Coolant and
2007 Hummer H3 2007 ENGINE Engine Cooling - H3
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