20 Most Recent 2003 Chevrolet TrailBlazer - Page 2 Questions & Answers

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2003 trailblazer, ac not working

Mine did this once. The entire AC control panel was dead as if it was disconnected.
I made it start work again by reseating the AC fuse in the fuse box under the back seat.
Go figure...
7/16/2018 7:56:11 PM • 2003 Chevrolet... • Answered on Jul 16, 2018
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Where is the tac module located on a 03 Chevy trailblazer

tac module ?
5/6/2018 5:45:20 PM • 2003 Chevrolet... • Answered on May 06, 2018
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03 trail blazer ext. when going down the road from out of no where comes a loud grinding clicking metal on metal noise

If the noise you are referring to is coming from the front, it may be the guy assembly. Easy way to check, lift the front of the car and rotate each wheel by had, if you hear the grinding, your huh assembly needs replacing. Local automotive parts store usually have them in stock for around $104 but if you have a few days to wait, Rock Auto.com can get them to you in a few days for 1/2 the price.
4/15/2018 8:05:16 PM • 2003 Chevrolet... • Answered on Apr 15, 2018
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2003 trailblazer v8 4wd crank but no start. Fuse4 under hood panel has no power. It should be hot in run and start key position. Where does it get power i cant find power side prints

It like this the battery supply's the power to the starting motor to crank the engine over that is a good point to start checking . However the ignition switch opens the circuit like a light switch on your wall open closed. Now you need to figure out what works when the key switch is in run position do you have major power windows seats door locks if so the battery is fine .If not you need to take a good look at the battery TEST IT if that's good then look at the fuse box any fuse that would stop power flow would a 20 to 30 amps yellow or green the # will be on the back of it Next you need look at main connections and grounds like from the battery to the starter and solenoid yank on the cable to the starter from the battery check your main ground cables fusible links look for corrosion. Then you can start thinking about what you need to take APART. 3 will
3/24/2018 2:30:32 AM • 2003 Chevrolet... • Answered on Mar 24, 2018
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My 03 trailblazer LTZ sunroof is stuck open and wont close...motor works but window doesnt move.how do i manually close sunroof...

I recently tried the DIY service and repair manuals from a website and it actually helped me repair transmission problem in my jcb 3cx site-master. it wont move forward or reverse, engine is good both solenoids for forward and reverse work. I don't have much technical knowledge but I just followed it step-wise, and works perfect! got it from www.reliable-store.comAll the best
3/23/2018 3:58:37 PM • 2003 Chevrolet... • Answered on Mar 23, 2018
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Opened my sunroof heard a crunch now will not close all the way

You are all incorrect with diagnosis. And there is no button hokd calibration, stop it. Read on. So easy a caveman could do it. 1.5 hr job only removing glass.

(Inside vehicle)Remove the 4 hex screws that attach the glass to the rail guides and remove the glass panel. This will also allow for manual movement of rails. The glass is adjustable(hight only) so mind the position when removing the screws.
. Hold the glass like a pizza pan for it will slide down as u loosen each screw, remove the screws then lift upward and rest glass on roof. Removing the glass will give a good view of both guide rail and concting arms. The crunch you heard was one of the connecting arms plastic rail guide tips breaking. Picture a catamaran for a moment. The pontoons are the plastic pieces that slide fore and aft inside the rail and keep everything aligned. It will be the outside(pontoon) guide piece that failed. When that broke, a lot of play was allowed and began binding. Bless the poor folks who bought a whole new unit for nothing. I fabricated two pieces from the plugs off an older dell power supply. The plugs were the exact same length as the factory guides and even beveled ends. I only had to cut the plugs in half long ways and then install on the slider. Even the holes that are already in the plugs fit the stud (pivot stud that the pontoon slides onto) the guide. Sunroof will not vent if any of the pontoons are damaged. When venting, theses guides(pontoons) pivot upward through a slot on the top side of rail slot and rest on the rail so not to close by wind. Hope this helps. Any questions eamail me at dubyadubyadubya dot maxrevadvisors at g mail.
3/16/2018 2:48:23 PM • 2003 Chevrolet... • Answered on Mar 16, 2018
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2003 trailblazer aux plug need information does it stay on all the time

I suggest you get one of those manuals people get nowadays to do it yourself.. My nephew use it to repair my car and it's totally repaired now. Here's the website he bought it from. Best Manuals
3/5/2018 6:07:19 PM • 2003 Chevrolet... • Answered on Mar 05, 2018
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The front AC blower doesn't work on my 2003 Trailb...

Check ground G201 splice pack near right front of lower console
3/1/2018 2:25:13 PM • 2003 Chevrolet... • Answered on Mar 01, 2018
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I have a 2003 chevy

Have the various systems scanned and see if they show a fault code, I suspect they will. As far as the gauges go that sounds like the rebuilder screwed up.
2/8/2018 11:13:40 PM • 2003 Chevrolet... • Answered on Feb 08, 2018
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I have a 2003 Trailblazer and the dash vent is stuck on. When I try to switch it to the floor vents or the defrost it will start making a clicking noise and will not stop until I switch it back to th

Mode Door Replacement

Removal Procedure

  1. Remove the I/P carrier. Refer to Instrument Panel (I/P) Carrier Replacement in Instrument Panel, Gages and Console.
  2. Remove the screws from the mode actuator.
  3. Remove the mode actuator.
  4. Click to Enlarge
  5. Remove screws in order to separate the defroster/mode outlet cover (2) from the HVAC module assembly (1).
  6. Click to Enlarge
  7. Remove the mode door (1) from the heater module.
Maybe the actuator needs to be replaced?
1/29/2018 5:57:10 PM • 2003 Chevrolet... • Answered on Jan 29, 2018
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ANTI-LOCK AND PARKING BRAKE LIGHT

Any code's stored in the ABS ? The VSS - vehicle speed sensor is an input to the PCM - engine computer . The PCM sends this info. on the class 2 serial data network to the instrument cluster . The Instrument cluster has a microprocessor that deciphers all relevant data , speedometer , tach , fuel level , temp. etc... an through the use of stepper motors controls the gauges . Do you know what a module serial data network is ? Do you know what computer controlled systems on a automobile are ? The ABS - anti lock brakes need speed info. also , as does the transmission for shifting point's . The parking brake light is more then just to let you know the parking brake is set . ABS problems , low fluid level in the master cylinder will also turn on this light . Having the vehicle hooked up to a professional type scanner should be the first step in the diagnostic process . Check DTC'S , view sensor data parameters . Engine Coolant Temperature Gage The IPC displays the engine coolant temperature as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine coolant temperature. The engine coolant temperature gage defaults to 100°F (40°C) or below if: • The PCM detects a malfunction in the engine coolant temperature sensor circuit. • The IPC detects a loss of class 2 communications with the PCM. PRNDL Display The IPC displays the selected gear position as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the gear position. The PRNDL displays blank if: • The PCM detects a malfunction in the transmission range switch circuit. • The IPC receives a class 2 message indicating the park position and the column park switch indicates a position other than park such as an open input. • The IPC detects a loss of class 2 communications with the PCM. Speedometer The IPC displays the vehicle speed based on the information from the PCM. The PCM converts the data from the vehicle speed sensor to a 4000 pulses/mile signal. The IPC uses the vehicle speed signal circuit from the PCM in order to calculate the vehicle speed. The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit exists. Tachometer The IPC displays the engine speed based on the information from the PCM. The PCM converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. The IPC uses the engine speed signal circuit from the PCM in order to calculate the engine speed. The tachometer defaults to 0 rpm if a malfunction in the engine speed signal circuit exists. You could have any one of a number of different thing's causing your problem . Hooking up a scanner probably would point to the gremlin . 012 GM Class II Communications
1/15/2018 11:04:43 PM • 2003 Chevrolet... • Answered on Jan 15, 2018
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My 2003 Trailblazer revs really hard when I

fault code readings are free they will give you an idea of where the problem is
12/26/2017 10:33:57 AM • 2003 Chevrolet... • Answered on Dec 26, 2017
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How to adjust pass door of 03 blazer

Oh is the "A" Frame OK, also the door frame where the hinges are your looking for damage distortion creases etc. As the body guys say a dent is fixed by reversing how it happened, so to me this will be a body shop job. Ask a friend in the know to have a quick look see. Regards David
12/25/2017 12:13:12 PM • 2003 Chevrolet... • Answered on Dec 25, 2017
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Does a 2003 Chevy Trailblazer have a fuse for the speedometer and where is it located and how would I know which fuse it is

There is no dedicated fuse for speedometer only. There is voltage and ground for the instrument cluster. The vehicle speed sensor sends a signal to pcm concerning speed then the pcm sends signal to instrument cluster for speedometer.
12/21/2017 10:56:15 PM • 2003 Chevrolet... • Answered on Dec 21, 2017
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2003 trailblazer, 145,000 miles on her. Vehicle stopped running while on highway at about 65mph... Pulled over, car would turn over but would not start. Got vehicle towed home, ran a bunch of test, fu

causes for the injector/s failure are wiring injector ECM as all injectors stopped working at once , check the connection on the ECM find a known good ECM and substitute it as it may be an ECM failure check for a failed fuse for the ECM
11/28/2017 2:43:07 AM • 2003 Chevrolet... • Answered on Nov 28, 2017
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I have a loud humming / whinning noise coming from

If the outer bearings can go bad, so can an inner bearing. A close visual inspection will usually reveal a bad bearing or you can feel it when you spin the bearing. You could check the gear grease in the rear end. Bearings in there can go bad.
11/25/2017 8:22:07 PM • 2003 Chevrolet... • Answered on Nov 25, 2017
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