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2005 Chevrolet Trailblazer Questions

Get answers to questions about your 2005 Chevrolet Trailblazer at RepairPal. Find solutions, diagnose problems and get back on the road.

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230
questions

For a short time, I was only getting air blowing with levels 1-4 (out of 5), then they stopped working altogether, then 1-3 started working again for about 2 days, now they don't work at all. Its wintertime and can't get defrost to operate until I'm driving on the highway and the warm air works its way through the vents when the engine warms up (often this is much too late for safe driving), and no fans, so no heat at low speeds. From what I've read, it may be the blower resistor AND the blower motor? Does the repair manual talk about/show how to replace and/or repair these items? I'm on a serious budget and have gone without heat now for about as long as I can stand it, but cannot find the repair manual at my library for the 2005 model - does anyone know if the 2003 model is the same for these items? Don't want to mess with that if I'd need to take it to a local shop anyways. Thanks in advance for any advice offered here!

I have to turn engine off for few seconds and then turn it back on.
I have no power when I hit the gas and it does it frequently.

The owners manual shows a cooling fan relay (45) in the fuse/ relay box under the hood. The same type , & part # relay operates the headlights high / low headlights circuit (relay #46).

I had one replaced post cat 02 sensor. But Im told there are 4 sensors, 2 in front & 2 in back. Now someone tells me its my air induction valve..which can cause rough idle and poor gas milege. Im confused what the heck is it?

vibration at low rpm when at a stop. vibration increases when ac is on.

I'm getting a P0128 CODE on my Trailblazer. It is caused by a defective temperature sensor or thermostat. Where are these items located?

a whining noise comes from under the hood when the key is turned to acc. sounds to me like it is coming from the throttle body assembly

My car RPM moves but car can't pick up some time goes till 60
what is the problem

looking to buy this car but it has a leak not sure price to dfix

I have ticking under hood, bogged down acceleration, strong exhaust fumes and some smoke at times from tailpipe. Oil pressure is good and ticking speeds up with acceleration. Please help!!! :(

It's not the battery. Could it be the shifter assembly or a shift lock control solenoid? I can only move the key forward once I need to move it forward again to have the key come out of the ignition. GM has me confused about what parts I need. Prices vary depending on what they think I need. I know that it has to do with the shifter because I took it apart and the part on the shifter does not come up the whole way for the piece on the shifter to release the key in the ignition. Do I need to replace the solenoid or the whole shifter?

no problems up to now

I have had this issue checked 3 times so far and again the check engine light came back on after having the issue "fixed" by the dealership. They said it was a faulty part at first. What the heck is going on here. I just purchased the truck 3 weeks ago?

Our trailblazer has a constant ticking noise under hood that is very loud and shakes and vibrates when start up car and at stoplights...been told a couple thousand to repair the lifter.

all gauges are irradicate