Question about Chevrolet TrailBlazer

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Chevy Trailblazer 2002... hard start but when it start engine runs good. Fuel gauge indicate half way but no more gas on the tank. Heater and ac control...when ac trun on, driver side cool air but passenger side heat air comming from the vents. When trun knobs on climate control to max (5) blower trun off. Thanks, Sonny

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  • sungin3l Feb 09, 2010

    I will look unto the solution and see if it work. At least I have something to start with.. Thank you..


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Hello the hard start could be a tune up issue or fuel pump or fuel pressure problems these vehicles are known for these problems just like other cars and trucks. if your vehichle has 100,000 miles or more should always replace spark plugs and plug wires at that mileage not sure were at.if you locate the fuel pressure regulator on the fuel rail simply remove vac hose from it and look for wet vac hose also smell vac hose for gas smell if you do smell or see gas it will need to be replaced when they start to fail the fuel pressure dosent hold wich is what gives you the hard start what i always do is check fuel pressure should be 50 psi engine running as far as the gas gauge its problay the tank sensor for the fuel pump and gas gauge together the heater is problem is the blower motor relay could be in glove box or outside cowl thats what controls the high speed for the heater. the last problem is either a blend door or a hvac module controller wich is the temp control knobs ther are test for these parts i perform before i replace hope this helps if you have more questoins just hit me back and i will try to help you more Thunderboltz

Posted on Feb 05, 2010

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