Chevy Duramax Coolant Leak Help Utah Wildlife Network The water pump will have a little weep hole where the coolant will leak to let you know that the seal inside the pump is shot, that is most likely the issue because a water pump gasket does not just start leaking generally after many years. there is a little hole about 1 8" 1 4" on all pumps, if the leak is there, you need a new pump. About every 150 200 miles it uses enough coolant to turn on the low coolant light, run it another 200 300 miles, it's always about 3 4 to 1 gallon of coolant. took it to a mechanic, we pressured up the system and it held for 24 hours. he said head gaskets, we changed them (trued heads, magna fluxed heads, stud kit), injectors (they were bad.
Chevy Duramax Coolant Leak Help Utah Wildlife Network Oct 11, 2018. #3. the rear cover of the motors is a removable aluminum "plate" (really a complex casting, but only 1 2" thick) that adapts it to either a sae bellhousing pattern (kodiak medium duty trucks) or the standard gm v8 bellhousing (normal pickups). the coolant comes in the left side, and crosses over to the right side, entering both. When the engine is cold, the coolant level should be at the indicated mark. 1. engine cooling fan (out of view) 2. engine coolant surge tank and pressure cap. 3. charge air coolant surge tank and pressure cap. there is also a multi step fill procedure in the diesel supplement. 2023 lzo cc std box 4x4. My 3.0 had a very slow coolant leak which didn't manifest until i hit about 40,000 miles. same symptoms, temp gauge would spike up to 230 and then drop again, it was about 4 quarts low on coolant. the dealer finally found a pinhole leak and repaired. they had to put pressure on the system overnight to find it. Water pumps are usually easy to diagnose due to coolant leaking out of the weap hole. not all water pumps are created equal, i too have had some fail in short periods of time. 210 degrees seems high for normal driving, my 02 runs about 180 and will only hit 210 with a heavy pull.
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