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Trailblazer

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Question
Fuel gauge and tank not holding enough
The most common problem is the fuel pump sending unit is bad in the fuel tank. The fuel gauge may also be bad in the dash. The best and quickest way to test the gauge is to disconnect the connection...
Question
No power
I would recommend double checking the battery installation to make sure that everything was connected properly. If you would like to have your vehicle inspected to deterimine why these issues are occuring consider YourMechanic, as a certified mechanic can come...
Question
Car won't start
Hello there, many common faults will cause your 2004 Chevrolet Trailblazer to not start. Replacing the battery was a great place to start, as this is usually the cause. Other then the battery many other faults will prevent your vehicle...
Question
P0014 on scanner
Hi and thanks for contacting YourMechanic. The code p0014 refers to the camshaft position sensor 'B' circuit with the timing over-advanced. The TPS will not make the computer think of a cam not adjusting correctly. With the code p0014, check...
Question
I cleaned the ECM/PCM and now my car won't stay on
Whenever the ECM is disconnected the idle control settings the ECM has stored in memory will be cleared. The ECM will revert to the factory-new settings and since the engine now has high mileage and the need for adjustments to...
Question
02 trailblazer vibrates when accelerating
Hi there. The problem with most shaking and vibration issues is that one damaged component like broken motor mounts can mask other parts that may be damaged. A cracked exhaust manifold is one of those that can cause the vibration...
Question
What could be wrong with my car if the wheel is hard to turn while driving? I put power steering fluid in the car.
There can be many different possible causes of hard power steering. The most common things to check for are a broken power steering pump belt, or a leak that has caused the pump to run out of fluid. A power...
Question
Only cranks and starts sometimes. When it doesn't start, I hear a click coming from relay box. I don't think click is coming from starter
Hi there. It sounds like you narrowed many of the possibilities. It sounds like the starter is failing due to possibly worn contacts or a seizing armature. Definitely check all the fuses/relays and replace as necessary. Have a battery test...
Question
Electronics in car stopped functioning.
Hello, when you jump the vehicle, a power surge may have open some fuses. Fuses protect the electrical circuits and components from damage. The fuses have an amperage ratings, a power surge would put the fuse pass it rating and...
Question
My car makes a whining noise in first gear
The first thing to do is make sure it's the transmission, and not the alternator or power steering pump. These components also produce whining sounds sometimes. Having done that, does the transmission only whine while it's in gear (forward or...
Question
My car chugs one and then keeps turning over
Hi there. It is not advisable, to disconnect the battery to get rid of codes. The check engine/service engine soon light is there to identify drivability and emissions related concerns. Assuming, the pressure relief valve is the fuel pressure regulator,...
Question
Failing fan clutch symptoms
What you described is happening is normal cooling fan clutch operation. When you first start the engine the cooling fan clutch will be in the full engaged position and may take a minute for the internal fluid to move back...
Question
Service Engine Soon Light came on, what does that mean?
Your vehicle has pre-programmed service intervals programmed into the computer based upon mileage. When you have these various services done, the mechanic will reset these indicators so that the computer can begin measuring when the next service is due. Since...
Question
Turn knob to four wheel drive but won't go into four wheel drive. I changed the switch and actuator but it won't work
Hello. The 4WD system consists of a module, encoder motor, and actuator. The module operates the transfer case (component that sends power to the front differential). The transfer has an encoder motor that shifts the transfer case by the commands...
Question
The four wheel drive system is not engaging the front wheels
From what you are describing it sounds like you have either a failure in the transfer case or in the front axle actuator. I usually drain the fluid from the transfer case first and check it for metal. If there...
Question
My car make a winning sound when I accelerate the engine
Hi there: A whining sound that occurs while you're engine is accelerating is commonly caused by a worn out or loose drive or serpentine belt that needs to be replaced. In some cases, the belt will become loose because the...
Question
Acceleration
Hello: Most acceleration issues that are accompanied by a sound are typically an indicator that a vacuum leak exists or that an exhaust leak exists. To know for certain, you'll need to have a professional mechanic complete an engine is...
Question
My driver side lights are dimmer than my passenger side.
Hello: When you turn on the headlight switch, power is sent from the battery/alternator to the bulbs, causing the filaments to heat up and glow, which produces the light you need to see the road. Headlights are similar in many...
Question
Rough idle and SEL is flashing. I've replaced all 6 plugs and coil packs. The car still has a rough idle and no power.
Misfiring can be caused by lack of spark or lack of fuel. If the same cylinders are still showing codes for misfiring after replacing the coils, the problem can lie elsewhere. If it is the coils not firing, there can...
Question
Knocking noise from lower end of the motor. I was told it could be the flywheel
Hi there: Damage to the flywheel on a 2007 Chevrolet Trailblazer is highly unlikely unless you're experiencing serious transmission, acceleration or shifting issues. In most cases, a knocking sound will be caused by internal engine components that are experiencing lack...

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