electrical issues

Asked by Nov 14, 2008 at 07:46 PM about the 2003 Chevrolet TrailBlazer LS 4WD

Question type: Maintenance & Repair

here's a doozy for anyone who is an electrical genius and can figure out what really ails my truck:

Here are the issues:
1) lights have gone out while driving during the night (this has happened 2 times) I put my flashers on then fiddled a little with the ignition and after about a minute they came back on

2) Sometimes the car desn't want to turn over it grinds 3 revolutions graoning and moaning then kick on...sometimes I have to resatt then kicks over ok. Thia has happened about 6 times

3) Stalled at a red light. 1 time

4) "no air bag" light comes light comes on. 2 times

5)" get engine checked" light always on. Depending on whether I'm hauling a trailer it is intermitten

6) Battery light came on the a message about no charge getting to the battery. That went away after I jiggled and fiddled with the wires.

7) Today I put the air on 74 degrees and blew the fan on hight for about 8 minutes...then turned the fan way down to lo and as I accelarated the fan blower went from lo to high depending on the rpms and as I accelerated the sound was louder than normal. Usually I hardly here my car running. The blower issue went away when I turned the air off.

8) The other day I noticed that all the little buttons on my steering wheel were burning hot.

9) And the water gauage was not working... the needle laid all the way to the left (cold) while the other guages all indicaed normal activity including the battery guage (This information is no doubt pertinant to all the other itemized issues)
Any ideas as to what might be ailing my Trailblazer? It's an 03' straight 6 and I replaced the alternator 2 years ago and the battery 6 months ago (3rd one) And I live in South Florida...

12 Answers

7,555

electrical is not my forte, with that being said lets get started... First get the code read that is turning the check engine light on... Then check all your battery cables is sounds like you could have a loose one or a bad connection... If none of that sheds light on the situation, I'll need a volt reading across the battery terminals at idle... This will eliminate several possibilities since these can be caused by low system voltage.

4 out of 4 people think this is helpful.
285

With the Trailblazers there quiet a few iussues with the ignition switches, but it sounds like more thn that. You're going to have to take it to your GM dealer to get it diagnosed.

2 out of 2 people think this is helpful.
4,425

As Rich McClure mention I also recommend having a GM dealer diagnose the problem. However my first guess would be the defect Body Control Module and/or other associated Module would be defective. Even if my guess is correct, it could require an expensive GM Scan Tool to program a new module, which again I agree with Rich's recommended action. Then again does your Trailblazer have OnStar? assuming you have the service, digital equipment upgrade and your Trailblazer has Remote Diagnostic capabilities, just another idea, but could be more money than you anticipate. Otherwise Onstar can observe exactly what is going on with the vehicle and send the information to a nearby GM dealer. Therefore being able to zero in on the problem.

105

3. the reason why it stalled is maybe because of a bad alternator or alternator belt, so it wouldnt be giving the engine and accesories enough power so it shuts down. 1. the lights are automatic, as soon as they sense darkness they turn on and there is a switch for them to the left of the steering wheel almost beside the door and turning that to the left turns lights off, even when its running and high beams are used through the turn signal stick. so it could be something with an error there. or could just be turned off accidentally

1 out of 1 people think this is helpful.
95

I think the root of the problem is it's a Chevy, they really skimp on build quality for little things.

1 out of 1 people think this is helpful.
6,675

ha yeah ok. chevy is a bad company. even though they have dozens of models that go until 300k miles or more without issues.

1 out of 1 people think this is helpful.
105

aha ya also chevy has the same truck as gmc envoy, buick rainer, oldsmobile (discontinued) bravada, saab 97-X. so allll of them except the saab are the same. saab is just sweeeeet

4,425

Though they are not perfect, they are not as bad as you think they are. 1991 Chevrolet Corsica went 218,000 miles 1992 Chevrolet Lumina Euro has about 160,000 miles my 2000 Chevrolet Malibu LS 184,500 miles and still going

1 out of 1 people think this is helpful.
4,425

Buick Rainer has also been discontinued as well, way too much model duplicate without distinct differences.

105

yaaap yet they still make the same ones buick enclave, gmc acadia like make somethin different for once. then now the trailblazer is taken over by the traverse

2 out of 2 people think this is helpful.
20

ok well I have an 06 Chevy Trailblzer LT with heated leather seats and a bunch of electrical issues it would take me all night to say but just a couple of things the drivers door automatic controls dont work cant roll my window down or may not get it back up it and that happens to be where the control for my heated seats are and living in Iowa in mid winter and having leather seats with no heat and the heat in the truck working only half the time in the front is not cool actullaly that makes my leather seats extremley cold it chills me to the bone apparently there was a recall on the door controls and it was fixed once as I bought it used and I said well apparently it didnt work because the same issues are happening again it turns its self on and off when it wants to and I can actually hear it in the door when it does that and I have learned it is a fire hazzard so this scares me and I worry sometime my heat wont turn on and I will freeze to death if this winter doesnt end it is the coldest its been in decades with negative 20-40 below many days and I have to depend on my vehicle to get me to work and back which is 35 miles from my home and I cant depend on it and of course this all got the worst in the winter we know its electrical and my family has always been Chevy people there are some out there that run forever however I have researched the 06 trailblazer of course after I bought it and started having problems and I said and what I reccomend is that from now on when I buy a used or even new vehicle I am not gonna get it right away I am gonna give it a couple of days and do a lot of research on problems and recalls the vehicle has or had this electrical would normaly cost around 1,000.00 but we have the best mechanic and the cheapest and he is a whiz at electrical so it will only cost about half that but you would think GM would do more than just the couple of recalls they have done on it they need to recall the entire electrical system this is all I have to say about this it makes me angry to talk about it and partly because of the used car dealership I bought it from wont help at all

2 out of 2 people think this is helpful.

Talk about run-on sentences. That was a doozy. Could these problems have to do with a bad instrument cluster? I just bought a 2003 Trailblazer LT with the straight 6 and 4wd, with the instrument cluster as-is and a warranty on the rest of the truck. But it does weird things, like the dash lights, interior lights, and stereo all lose power when you put it in gear. The 4wd mode selector knob doesn't work so it's stuck in 2wd. And the back seat power windows only work in Park. And of course all the gauges are useless. I'm using an android app for a speedometer but that won't tell me if my engine overheats. It doesn't look that expensive or that difficult to replace the instrument cluster but it would be reassuring to know that's what's causing all my other problems.

Your Answer

Add photo

Related Questions

  • Electrical & A/C issues - TB 2007 1 answer

    Few questions 1. Driver side a/c, when i want to lower the cooling through thermostat and bring it valmost into the middle, instead of air getting warmer what happens is that airflow through the driv...

    2007 Chevrolet TrailBlazer LS

    -

    Maintenance & Repair

  • 2004 trailblazer ls 4x4 3 answers

    car was running great then all of out of the blue was baily running stop at oreillys pulled 22 codes out all electrical po300 po128 u13101 b2725 bo790 bo785 bo780bo775 bo770 co 550 co379 co374 co3...

    2004 Chevrolet TrailBlazer LS 4WD

    -

    Maintenance & Repair

  • 04 trailblazer 4wd service light 2 answers

    My service 4wd light is on what do you thhink it it?

    2004 Chevrolet TrailBlazer

    -

    Maintenance & Repair

  • Trailblazer making me sad 19 answers

    I have a 2005 Trailblazer. The battery died. I replaced the battery now the car runs rough sometimes shuts off when I run the defroster or the A/C. I've done some research and found that when the...

    2005 Chevrolet TrailBlazer LS 4WD

    -

    Maintenance & Repair

  • Electrical Issues 6 answers

    Truck would turn over but not start and was found with bad fuel pump. Replaced it and assembly. Day later it shut off while moving in drive 2 times. A second mechanic found no obvious causes and sai...

    1999 Chevrolet Blazer 4 Door LS 4WD

    -

    Maintenance & Repair

TrailBlazer

Looking for a Used TrailBlazer in your area?

CarGurus has 5,333 nationwide TrailBlazer listings starting at $1,600.

ZIP:

Search Chevrolet TrailBlazer Questions

Chevrolet TrailBlazer Experts

#1 Tom Demyan
Tom Demyan
Reputation 680
#2 dandyoun
dandyoun
Reputation 550
#3 bigdogracer
bigdogracer
Reputation 530
View All

Related Models For Sale

Used Chevrolet Tahoe
1,091 Great Deals out of 31,950 listings starting at $1,495
Used GMC Envoy
76 Great Deals out of 2,279 listings starting at $1,500
Used Jeep Grand Cherokee
1,155 Great Deals out of 70,016 listings starting at $495
Used Chevrolet Silverado 1500
2,681 Great Deals out of 149,054 listings starting at $1,800
Used Ford Explorer
1,490 Great Deals out of 72,971 listings starting at $985
Used Chevrolet TrailBlazer EXT
21 Great Deals out of 1,290 listings starting at $1,850
Used Chevrolet Blazer
1,374 listings starting at $1,699
Used Chevrolet Impala
965 Great Deals out of 36,458 listings starting at $1,800
Used Chevrolet Camaro
665 Great Deals out of 39,408 listings starting at $3,495
Used Ford F-150
3,395 Great Deals out of 205,576 listings starting at $1,273
Used Dodge Durango
485 Great Deals out of 23,221 listings starting at $1,100
Used GMC Yukon
537 Great Deals out of 17,581 listings starting at $1,777

Used Cars For Sale

2007 Chevrolet TrailBlazer LS 4WD For Sale
8 Great Deals out of 227 listings starting at $2,995
2006 Chevrolet TrailBlazer LS 4WD For Sale
7 Great Deals out of 359 listings starting at $1,995