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L6-4.2L

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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
Lower Control Arm bushing
After viewing the pictures you supplied and viewing many different manufacturers of the lower control arms I do not thing the bushing is installed all the way in your control arm. I recommend you go online and print one or...
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
Won't açcelerate and no power
Hi there: Anytime a vehicle strikes a very large object, like a deer, the chances for electrical connections throughout the vehicle to come loose is very high; and can cause issues you're experiencing. The issue may be a TPS or...
Question
Car overheating and heater blowing hot air.
The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...
Question
I have a problem with my truck vibrating.
If a motor vibrates while in park idling, there is either a balance issue with the motor or an engine mount problem. Locating such problems is not for the faint of heart. There are several techniques that can be done,...
Question
Battery replacement
Your battery is generally held in by a strap or a set of bolts and connected to two cables (positive and negative). Depending on your ability and access to tools, this generally requires very little time and a couple of...
Question
If I put my car in drive and push on the gas it wont shift to second unless I let off the gas. If I drive it in overdrive it shift
Hello, the concern you have I strongly advise not to drive. The issue needs to be addressed, the vehicle will become inoperable. The automatic transmission has 3 systems; electronic, hydraulic, and mechanical. What describe could be an internal mechanical failure...
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
4WD transfer case issue
Hi there. It seems like what happened was, when putting the vehicle in 4WD low and driving at a high speed on pavement this could have caused the front axle to burn up. This is because the front differential has...
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
Oil pressure
The oil pressure should never read "0." It will be very low, usually around 15-20 psi, but should never be "0." There are a number of factors to consider in terms of oil pressure such as the viscosity of the...
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
My vehicle is mixing water and oil
Because you have a manual transmission, the mix of oil and coolant can be caused by a leaking intake manifold gasket, a blown head gasket or a cracked cylinder head. The intake manifold would need to be removed and inspected...
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
Car starts with remote not key
Hi there: Although it's very rare, sometimes overuse of an accessory power outlet can cause an electrical "glitch" to occur that causes the issue you're experiencing. The best way to rectify this issue is to download any stored error codes...
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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