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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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I never know how much gas I have left, gas level does not work. Also I do not know how fast I'm going because my speed sensor does not work.

My daughter left a car seat warmer plugged in over night and my battery was dead the next day. I jumped the vehicle and it fires up nice and smooth and sounds like everything is great, but the car runs for about 1 second then shuts off. My key fob will no longer unlock the car or do anything, the locks won't engage or disengage when the button is pressed, the stereo won't turn on.. The dash reads Unknown Driver instead of Driver 1 Driver 2.

I tried the 30 minute reset procedure, but I may have done it wrong, because there is no SECURITY light that flashes or even comes on for that matter. There isn't a Check Engine Light on, or any indication that something is wrong, the car simply starts and shuts off immediately. I have two keys, neither of them work.

So far I have tried to put the ignition in the on position, let it sit for 10 minutes and turn it off for 5 seconds and try to start it. That didn't work, so I tried to do that 3 times over, but one thing was missing from the instructions that I followed: the part where the security light blinks or turns off after 10 minutes.

Also, Does anyone know which anti-theft system this vehicle has?

Have replaced everything that it calls to replace and now runs like a top just at idling for a while it just dies i am up stuck have sure track system at the shop and still can not figure. Out this issue plz help asap thanx

When it is cold, vehicle starts but when put in reverse it stalls. After warm up, 2-5 min, no problem. If put in drive when started, , no problem. No mechanic knows what the problem is. Help!

i have a 2005 Chevy trailblazer with 113000 miles and my mechanic told me that my trailblazer have a Bad valve and misfire #3 . is a recall on this suv ?

Loss of power

It cracks but wont start wait 10 to 20 then it starts right up then it's fine the rest of the day

the truck with something. Now the seat wont go back all the way.

I have a 2005 Chevrolet Trailblazer Ext Lt 4wd; I have a problem with my
4wd engaging it seems, when I put my suv in 2hi, it makes loud grinding sounds when it goes in to gear and feels like it is netural will not drive also does the same in A4WD. It would drive in 4wdHi with no grinding noises or nothing but now it is starting to do the same thing in 4wdHi; last night it locked up on the highway and when into park mode at 60 miles while driving all of sudden. Was able to safely get it to the side. Was able to get it home in 4wdHi, but now it can only be driven in 4wdHi or 4Lo but grinding can be heard and now the rear differential locks up and grinding is heard and feels like the brakes are engaged in the rear. So I am thinking the rear differential is shot completely.
Is there anything else I should be looking at also.

Just put rack opinion and power steering pump and pulley belt tensioner in my 05 4.2 trailblazer ls. But when I slow down and turn or I'm stopped and idiling the steering is tight. But as soon as I accelerate the steering is perfect. If the gehicle sets awhile it's fine but run it for 20 min or so the problem reoccurs

When I have the air on full blast I can hear what I think is the air compressor turn on. It is very loud and will sometimes even shake the car slightly. It makes a loud clicking noise sometimes too.

code P0305, fuel and ignition systems fine, swapped spark plug and coil, cleared fault, misfire did not follow ignition components, removed plug and coil from cylinder 5 and compression tested, extremely low compression in 5, internal mechanical failure and would require valve job or complete engine replacement
120,000 miles, would rather fix than replace if get a better estimate than $5000

I am trying to install new a/c system but can't find where the expansion valve is located.