Top 20 2004 Chevrolet TrailBlazer Questions & Answers

Question edited for clarity. Question moved to model category. If you get a 4 foot length of 1\4" clear plastic hose, you can put one end in you ear and use it as a stethoscope to track down the humming. The closer you get, the louder the noise will become. Coolant Flush or engine oil flush? https://www.google.com/search?q=2004+Chevy+trailblazer+coolant+flush ..

Question edited for clarity and add maker. Question moved to model category. No they won't, they are too big. https://www.google.com/search?q=2004+Chevy+Trailblazer.+Will+265%2F75+16+fit ..

Check out the videos https://www.google.com/search?q=2004+chevrolet+trailblazer+replace+front+axle ..

There are videos in this link https://www.google.com/search?q=replace+the+fuel+lines+on+my+2004+Chevy+trailblazer ..

Hello. It seems when your Chevy was jumped, it also got 'shorted' out. The accessories you stated are all powered from the 'ignition' side of the ignition switch. Check the fuses of all the accessories you stated aren't working; they are, more and likely, 'blown'. Good luck and keep me informed; if you want to.

OK, we'll need more information here. Is the sound there when your in park/neutral, only when it is in gear, or both? Does it knock 2 or 3 times then stop or is it constant like a machine gun? Does the 'knocking' change speed with the engine as you gently press the gas pedal? Please use the comment box below and I'll see what help I can give you.

Automatic or manual? Did you stop and turn off car, restart and test? Did you disconnect battery for 2 minutes and re attach and test? 'Driveshaft' most commonly is a long shaft that connects the transmission to the differential. None of the above will fix mechanical failure like a broken u-joint

if its pinging yes

This should help

check battery connections and main fuse

It located behind the lower left side of dash.

May be some wiring fault but to know the exact fault you must need the service and repair manual with diagram which will provide you step by step help to locate and fix the problem easily and you will get the manual from the given link https://toolsnyou.com

Have you tried to add any refrigerant to it lately? The pressure can go up as it heats up, to the point where the pressure switch cuts the compressor off.

Try right above your oil filter if it not there look on the front of the engine it's called a oil pressure switch

Torque should be about 30-40 ft lbs. This is essentially tight by hand, no torque wrench is often used. See this how to video: Sorry the video wouldn't upload. But the shop (A1 Auto) tightened by hand and for me that's 30-40 ft lbs with open end wrenches.

Check out this video on the pugre valve location. https://www.youtube.com/watch?v=qwMn0-UEgLo

Check the idle air control device on the intake

The 2004 trailblazers came with the worst transmission Chevy makes...I can never remember the entire label for them but it's the 40 instead of the 70 they commonly used in the 96-99 silverados...it's known for going bad with the actual shift gear components but also the shift solenoids have a tendency to stop working as well...there are videos on YouTube that are very informative..one even shows the guy tearing one down for a complete rebuild..the solenoids are also a pain to figure out if u aren't familiar with rebuilding or repairing these types of transmissions...the first thing I would do in your situation is get a new gasket and filter for the trans and put fresh trans fluid in it..DO NOT FLUSH THE FLUID! Just let it drain when u take the pan off..clean out the pan and make sure there's no big chunks in it..if u find chunks..it's on its way out..if not, clean off any excess debris around the lip of the pan as well as the gasket area transmission side..use a rag..never scrape with a metal anything..they have aluminum housing and can easily be damaged..if any build up or gunk is on the area the gasket goes...use very fine sand paper and water to smooth it out...when u place the gasket and pan in place..use a star pattern on the bolts using your hands to get them started then tighten them down to where u barely have to put pressure on wrenching them..if u see the gasket starting to bulge out at all, it's too tight at this point..back it off some till it's not bulging out..tighten in an X pattern respectively until theyre all tight..if u have a torque wrench that shows lower ft lbs or inch lbs...the owners manual should have the numbers listed for those bolts..if not..get a chilton book ...if u plan on having this vehicle for a year or more lol...get a chilton repair manual cuz u will need it...lol..fill up the trans fluid to full when running and in park..don't over fill...let it sit and run for around 15 mins on a dry concrete surface and check for any leaks..I've just ran into a transmission that someone used gasket maker on and went overboard with it...every transmission guy I've ever spoke to says not to use that stuff ...get the name brand gasket from a reputable part store like Napa...it's not worth the few $ saved going generic when it's for the transmission...they're expensive to replace or rebuild...this was the first thing I did to my 05 LS when I purchased it...it had been slipping from second to third when I drove it home from the dealer...it hasn't done it since...hope this helps..