20 Most Recent 2003 Chevrolet TrailBlazer Questions & Answers

Hello maasdnl,

The firing order is 1,5,3,6,4,2 see image below for cylinder orientation.


I hope this helps.



2003 Chevrolet... • Answered on Apr 04, 2021

when you take off the fuse cover if you flip it over the fuse locations are marked on the under side of cover

2003 Chevrolet... • Answered on Aug 18, 2019

Make sure that none of the fuses were shorted out during the replacement. Also make sure that all relays were plugged in on assembly.

2003 Chevrolet... • Answered on Mar 18, 2019

There's a large torx screws hold it on. Cake

2003 Chevrolet... • Answered on Feb 17, 2019

About 15 foot pounds at most

2003 Chevrolet... • Answered on Feb 09, 2019

You have to remove the oil pan first - the diff stays up in the body until you remove the pan, then the diff comes out.

2003 Chevrolet... • Answered on Jan 24, 2019

Your heating system is broke in the dash. The doors or gates that change where the air is to go, has a broken hindge or actuator. Your heat is set to defalt to the defrosters as a safety thing. The vibration, I would say, is your fan & it may have been the thing that started your whole problem. The fan has something wrong W/ it, weather it has dropped, the shaft that it runs on is bad, or it is just going to the bad. To fix, the whole dash has to be dropped so that the gates or doors can be accessed for repairs & the fan, it's half in & half out of the passenger compartment. I've had 3 or 4 dashes out to do this work but it is TIME CONSUMING. Wish you the best, GOD BLESS.....

2003 Chevrolet... • Answered on Sep 30, 2018

Jeff, this is a very common problem with our platform. Replace your fan clutch, while you're there, replace your waterpump also, it's cheap and it WILL go out. If you can swing it, buy a Hayden brand fan clutch, or buy one for an 08 or 09', those are better. If you do it yourself, do yourself a favor. Cut a notch in the upper fan shroud where the upper radiator hose is. Will save you tons of time, potential breakage, and frustration.

2003 Chevrolet... • Answered on Aug 30, 2018

Replace #43 Relay under the hood. Could be malfunctioning. There's a recall for this relay also.

2003 Chevrolet... • Answered on Jul 20, 2018

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...

2003 Chevrolet... • Answered on Jul 16, 2018

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.

2003 Chevrolet... • Answered on Apr 15, 2018

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

2003 Chevrolet... • Answered on Mar 24, 2018

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

2003 Chevrolet... • Answered on Mar 23, 2018

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.

2003 Chevrolet... • Answered on Mar 16, 2018

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

2003 Chevrolet... • Answered on Mar 05, 2018

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