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Trailblazer EXT

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Question
Brake noise
Try and drive it for a couple weeks after inspecting to make sure everything was installed correctly. The noise may change after the pads are seated into the rotors. When a pad and rotor are new, they will not match...
Question
Truck goes into limp mode while driving
Hello. The P0068 diagnostic trouble code is an indication that there may be an issue with the manifold absolute pressure (MAP) sensor/mass airflow (MAF) sensor. The P0016 diagnostic trouble code is an indication that there may be an issue with...
Question
AC blowing warm air, ac compressor bad?
There are several issues that can cause your A/C to blow warm air. Although the compressor is on that list, one of the most common causes of warm air blowing from the A/C is a bad or failing A/C high...
Question
My water pump went out, I drove the car about 10 more miles before stopping, did I create additional engine damage?
Hi there! Yes, that is definitely enough time to do catastrophic damage and seize the engine. With your water pump going out and no coolant circulating through the engine, there is tremendous heat being generated and stored, and with heat...
Question
Dash lights came on and gauges dropped to zero
Hello there, thanks for writing in about your 2006 Chevrolet Trailblazer EXT. First, I would suspect a faulty ignition switch, and would put that near the top of my diagnostic checklist. I also recommend a thorough visual inspection, testing of...
Question
A/C blows hot air - completely stumped after a number of repairs...
It sounds like you did not replace the expansion valve when you replaced the compressor and accumulator. The condenser, evaporator should be flushed out also. You should remove and replace the expansion valve filter since it is clogged causing the...
Question
A rattle sound underneath truck when starting or when driving and speeding up
Hey there. This could be a variety of things as most cars tend to vibrate a bit which will cause bolts to loosen or fall out over time. Especially depending on a person's individual driving habits and conditions. There may...
Question
Do I need to change my pulleys?
Anytime a pulley for a serpentine, power steering, or drive belt begins to show signs of wear, it's common for other pulleys to also wear out soon. If you drive your vehicle from Wisconsin to Florida, I recommend replacing all...
Question
Low rpms no power 2003 Chevrolet Trailblazer
Is the Check Engine Light on? The throttle body assembly is a common failure item on this vehicle and can cause similar symptoms. In some cases, throttle body assembly will not open properly in accordance with the input from the...
Question
My new battery is draining, and I have tested the alternator and it is good. What can it be?
It sounds like you have a parasitic draw. This is when a system in your vehicle remains powered up while the engine is not running. This will cause the battery voltage to drop and eventually cause a no start condition....
Question
Car is idling up and down while either parked or when driving.
Hi there. I believe O'reilly's sold you an IAC (idle air control valve) from the description you have given. OEM is the acronym for original equipment manufacturer. Seems odd that it was only fixed for a couple of hours. Sometimes...
Question
Smoke is coming out of dipstick and where you put the oil in also the oil keep burning up in about four days and its starting to s
Hello. This suggests you have a couple of different problems that may be indirectly related. Smoke coming out of the dipstick to a certain degree is OK, however if this is excessive, this is not good and should be looked...
Question
shifts very hard from 1st to 2nd gear
This is very common when the transmission is due for a fluid change or if it is low on fluid. I would start with this as it is most common and the easiest fix. If this does not solve the...
Question
Transmission - 2003 Chevrolet Trailblazer
This may be caused by a variety of things in addition to the TPS. These possibilities could include a bad catalytic converter, internal damage on the transmission, or many other engine sensor problems. For starters, I would recommend checking the...
Question
What else can leak coolant? The leak is away from the radiator as well.
A coolant leak can come from leaking hoses, a bad head gasket, an intake gasket, or a number of possible locations. This means that a mechanic would need to identify specifically where the leak is coming from first before making...
Question
I have a 02 chevy trailblazer I went to step on the gas pedal and all it did was revved up but no go I pulled over and it died I t
This may be caused by many things such as low fuel pressure, a bad mass air flow sensor or a faulty idle air control valve. Low fuel pressure can cause an engine to starve for fuel due to irregular fuel...
Question
Where is the grinding noise coming from?
Hello. If this only occurs in one direction, then I usually check inside of the fender well for shinny spots. If there are any shinny areas, that would mean that there is something rubbing, such as the tire rubbing. If...
Question
Battery is not charging properly
This may be a sign of a weak battery, a failing voltage regulator or failing alternator. The alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the...
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
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...

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