Question about 2004 Chevrolet TrailBlazer

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Jump Started, Now More Problems

I tried jump starting my trailblazer today because it wasn't cranking over. the fuse box has same colored terminals directly across from the battery. i connected jumpers to fuse box, did not start, but radio was working afterward. later, looked again and found i mounted jumpers on wrong terminals. after correcting the placement of the jumper cables on the battery term's, it started. but the electronics (ac, windows, radio) stopped working. what happened. where should i start. tomorrow i'm checking fuses. read some blogs that said that may not resolve much. could be more severe. where should i start

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  • mikeyslacker Aug 29, 2008

    same situation here....any one else have simple solution and not a horror story about this repair.

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I had same issue "jumped" the fuse box. For the moment I have replaced the 125amp fuse with a 175 amp until I can get a 125amp replacement. This also confirmed for me that this is the fix too!

I could not find the part locally, but I did find it online at Advanced Auto > http://shop.advanceautoparts.com/ProductDetail.aspx?MfrCode=LIT&MfrPartNumber=MEG125&PartType=669&PTSet=A

Also found another blog with same issue and a photo to help you with identifying the 125amp fuse for the non-technical folks > http://forums.trailvoy.com/showthread.php?t=49965

Posted on Jan 18, 2009

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Check the 125 amp fuse on the fuse box under the hood. changed this on mine and everything works fine now.

Posted on Sep 02, 2008

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If you are lucky, it probably burnt a/or some fuses somewhere (probably higher amperage fuses, or a Maxi fuse (large fuse), or it might have burnt a fusible link (which looks like a normal wire and varies on locations depending on vehicles but is designed to melt and prevent current flow in the event of a current overload)

But, you also might have fried some electronic modules...

Posted on Aug 19, 2008

  • MIKE Oct 04, 2010

    just replace the maxi fuse don't put a larger amp one, it will work but you will regret it later try the auto stores for part if not contact a Chevy dealer the reason why i say not to sub it with a larger one is that your going to be allowing more amps to go threw areas that are specified for a smaller current and you will fry some wires if your lucky or just carry a fire extinguisher if you use a larger one, it can cause your ride to go up in flames no joke it will be electrical fire so have the right extinguisher hope this helps the fuse is connected on that fuse box it is bolted down the wires are red and black its right next to the battery were the battery cables are it s not the same as other fuses interms of looks have a good one hope this helps

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1 Answer

Put in new battery and a fuse blew, dont know which one but air conditioning, radio, windows, locks seats or alarm doesnt work.


Check the Mega Fuse right next to the battery. Open the fuse box, it's right there towards the battery black and about 2-3 inches long. It screws onto 2 metal terminals in the very front of the fuse box. Someone MAY have tried to jump start using one of the megafuse terminals, which is a no no. To check the fuse, need a volt ohm meter. Need to check continuity.

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My 2003 chevytrailblazer motor did roll over but now it dont


Check Battery, if you try to charge or jump starter you may hear a click. If you're sure its a good charged battery then consider starter. Try to jump starter by passing switch, cross small wire to larger wire on starter (you may get sparks) (please be careful if you try this) this should make the starter spin & kick in turning the engine. If it only spins then its probably the starter solenoid. If this checks out then check ignition switch & harness connections. That's it..

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I recently purchased a 2000 Ford Contour SE. It has dead battery and I used a jump box to start the car yesterday.. I started the car once after without the jump box and it cranked up. I went to bed. I got...


have a load test done on the battery as there is a dead cell evident. If the battery is replaced have the alternator checked for output and your problems should go.

Oct 08, 2013 | Cars & Trucks

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2000 accord alternator


you are just guessing, good luck there are 3000 parts in the car.
first off , you did post year,(goog), and accord but not the sub models
23 total, EX.LX.DX. and others.
you did not post the country you are in or the engine type opted
for your when sold new.
world wide, they had (wiki lists them all) engines.......
1.8 L F18B I4 (CD3)
2.0 L F20B I4 (CD4)
2.0 L F20B3 I4 (CD9)
2.2 L F22A3 I4 (CD2)
2.2 L F22B I4 (CD5, CD7)
2.2 L F22B1 I4 (CD5, CD7)
2.2 L F22B2 I4 (CD5, CD7)
2.2 L H22A I4 (CD6, CD8, CF2) 2.7 L C27A4 V6 (CE6)
your car has one of these.
USA:?
2.3L I4 VTEC
or the
3.0L J30A1 V6 200 hp (150 kW)

now back to those symptoms. (no out door temperatures stated, -50F Alaska or 80F Key West?)
1: wont start. (50 causes there are) less than 3000 ... for sure...
2: but you said the cranking was slow and in same breath, battery is not weak, this is key ,and contradictory.
a: if battery stays at 10v cranking its not week but if less IT IS.
b: if battery was good, and crank rpm below 250rpm then there are
other reasons, weak starter, one cylinder in engine, flooded with water. or engine seizures.... bad starter, etc.

sadly you did not try a JUMPER cable jump start to prove
the battery is car is good or bad. off a running other good car.
if it started ok, that is cranked ok we would know your battery
is bad or only just discharged.
and if it cranked ok wed know the engine was not seized and the starter is in fact good. all that from just a jump, amazing huh?

if you can get past robust cranking we can work no starts.
no starts are a total different thing,
Good engine, good EFI (and spark)

cranking is a unique system on the car, and most be dealt with at its own level.
but do tell us what you are driving, for better answers
the above is just basics.


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1 Answer

2005 chevy trailblazer was jump started and now all interior electricals from lights to windows to door locks are gone. Any ideas beyond fuses as I checked all of those mini fuses


This is a fairly common problem on Trailblazers. What happens most often is, when jump started, instead of connecting the jumper cables to the battery, they get connected to the studs on the main fuse box under the hood. When this happens, it blows the megafuse in the fuse box.
The megafuse feeds electrical current to most of the circuits in the rear fuse box. If that megafuse is blown, it will have to be replaced, and this should fix your problem. Here is a picture I found on the 'net of the megafuse:
10act_0.jpg

Hope this helps!!

May 10, 2011 | 2005 Chevrolet TrailBlazer

2 Answers

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Could be a miss aligned switch try wiggling the shifter in park the next time it dose not start to see if starts.Also dirty battery cables will give you the same crazy makes no sense problems. Clean both the post of the battery and the cable ends and make sure they are tight. Your car needs a completely charged battery (14.2volt at the ignition) to start, were as the radio and other electronics, locks, windows, etc. only need a few amps. .

Sep 29, 2010 | 2004 Kia Sedona

3 Answers

Won't start


Have your alternator check, sound like it's not charging your battery. When your battery is too low the car won't start even on a jump.

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1 Answer

2000 Ford Ranger


TEST B: BATTERY VOLTAGE OUT OF RANGE - DTC B1676
1. Check if vehicle has been jump started within past 2 weeks. If vehicle has been jump started, ABS is
okay. If vehicle has not been jump started, go to next step.
2. Using DVOM, measure voltage between positive and negative battery terminals. If voltage is 9-19 volts,
go to next step. If voltage is not 9-19 volts, diagnose charging system. See appropriate GENERATORS
article in STARTING & CHARGING SYSTEMS.
3. Turn ignition off. Disconnect 25-pin ABS control module. Install EEC-IV 60-pin Breakout Box (014-
00322). Turn ignition on. Measure voltage between breakout box terminal No. 20 and ground. If voltage
is more than 10 volts, go to next step. If voltage is less than 10 volts, repair Light Blue/Pink wire between
ABS control module and instrument panel fuse panel.
4. Turn ignition off. Measure voltage between breakout box terminal No. 25 and ground. If voltage is
greater than 10 volts, go to next step. If voltage is less than 10 volts, repair Red wire between ABS
control module and power distribution box/engine compartment fuse box.
5. Measure voltage between breakout box terminal No. 9 and ground. If voltage is greater than 10 volts, go
to next step. If voltage is less than 10 volts, repair Yellow/Light Green wire between ABS control module
and power distribution box/engine compartment fuse box.
6. Measure resistance between breakout box terminal No. 8 and ground. Also, measure resistance between
breakout box terminal No. 24 and ground. If both resistance measurements are less than 5 ohms, replace
ABS control module and repeat self-test. If either resistance measurement is greater than 5 ohms, repair
suspect Black wire between ABS control module and ground distribution.
NOTE: DTC B1676 will set if vehicle has been jump started.
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