2001 blazer little heat
#2
What does the coolant temp gauge show at idle and also when driving?
Could be as simple as a stuck open thermostat or a vacuum leak. Check the vacuum lines under the hood for splits, especially at the connectors.
Could be as simple as a stuck open thermostat or a vacuum leak. Check the vacuum lines under the hood for splits, especially at the connectors.
#4
Probably just low on coolant. Remove the radiator cap, operate the engine at 1500 rpm at normal operating temperature, and fill up the radiator with Dexcool coolant only. Then make sure the coolant reservoir is at the full line. FYI: These engines are known for coolant leaks from the lower intake manifold gaskets.
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