20 Most Recent 2005 Chevrolet Trailblazer Ext - Page 3 Questions & Answers

If you look at the engine from the front, there is a big belt called a serpentine belt. That belt connects the fan, air conditioner, power steering pump, alternator etc. There is a pulley on it the maintains the tension. The is the idler pulley. They are plastic in most cases and wear out or squeal.

Use a white paper towel and dip it on wet spot, if no color then it is water, probably from A/C accumulator which is normal for all vehicles with A/C, if Pink (dex-cool) or green its antifreeze which could indicate a problem. No towel?, taste it on end of your finger, sweet means coolant no taste means water. Do same thing for wet passenger floor area to determine fluid. If sweet or colored there is a coolant leak from the heater core , if water it would be from some other source unless heater housing broken and rani water leaking down from the heater fan cage.

If is a serpentine belt, take it out and check the belt tensioner. some of them have a screw that allows for tightening/loosing the belt. Sometimes it looses some bearings and it could chirp.

Bad grounding, plugs, wires, loose antenna cable.

Need to determine if you are losing fuel or spark

Is the door chime working and you want to disable it or is there no chime at all?First off the door chime comes through the radio speaker,if you need to disable it you will need to cut the wire from the speaker to the chime.If is annoying you can spray foam on it and muffle it .I believe that it uses data bits from the head unit (radio) to function so another way to get rid of it is sort of drastic but change out your head unit.Sorry your question only asked about where the fuse is and to the best of my knowledge is that is is none.

It is camshaft position sensor it say to the computer when to send the spark at the spark plug and where are the piston and the valve On old car the distributor do that job with cap and rotor, spark advance and vacuum advance

Sometimes when your altenator bearings are going bad they will make a whining noise, could also be power steering pump, try to see if you can isolate the noise to one or the other, is it louder on one side of the engine or the other side. That would help to narrow it down.

wires in a harness are colour coded and the connectors will be alike so find the same wire code and plug the connectors together . Remember that there may be wires in a harness with out matching wires to connect to as factory harnesses are made for extra add on items as the accessories list rises.

the click you are talking about is the high beam relay.
you nedd to get a tester or voltmeter and check the sockets for 12v.
there has been instances where both low beam bulbs went at once.
do the daytime running lights work?
if not,supect the daytime module...it is also wired into the parking brake.
if you put the park brake on first,then start the vehicle,the dtr do not come on

Better yet-- what have you done? Do you not have a repair shop you have used for years or decades? Have you done any testing at all-- yourself? Testing,that is the only answer to finding a problem You say it cranks but you have a no start condition You check for the fuel pump running You check fuel pressure with a gauge You check for spark or injector pulse What changed from the last time it started & ran okey?

Code 303 is a miss or lack of power on cylinder 3. If you know for a fact that cylinder is getting spark it could be an injector problem. Code 420 means the catalytic converter is not performing up to standard which could be several things including the miss on cyl 3.