Jan 052015
 

gas gauge don’t work, heater only works when you drive at least 70 for about 5 mins then stops when you slow down, and it says engine coolant hot.. thermostat was replaced and heater core flushed. dash cluster was changed . after that everything worked fright for a day or 2 then it all stopped working again.. i don’t even think the mechanics know whats going on.. please help its freezing here.

  One Response to “2004 chevy avalanche”

  1. Gas gauge: The sending unit that is attached to the side of the fuel pump located inside the fuel tank has failed(very common). Replacement of the entire fuel pump assembly required. 2 hrs labor time for replacement of fuel pump.

    As for the heating issue:

    Scroll down to Poor Heater System Performance

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