Question about 2004 Chevrolet TrailBlazer

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Voltmeter gauge doesn't show correct voltage. charging, battery and starting systems tested ok except battery needs recharging. an for an hour and gauge still dosen't show correct voltage.

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  • 293 Answers

Replace the voltmeter (voltage gauge).

Posted on Nov 09, 2012

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Posted on Jan 02, 2017

  • 22 Answers

SOURCE: I own a 2005 Chevy Trailblazer. My oil pressure

could be the oil pump in the motor.

Posted on May 29, 2010

DrSpeedo
  • 294 Answers

SOURCE: 2005 Trailblazer Ext: how doi fix a gas gauge on my chevy trailblazer 20...

Common problem on the 03-06 Trailblazer instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Trailblazer fuel gauge problems

Posted on Sep 30, 2010

Z71guy
  • 154 Answers

SOURCE: 2003 Chevy 2500 Amp gauge not working

Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Silverado instrument cluster repair

Posted on Oct 07, 2010

  • 1 Answer

SOURCE: 2001 CHEVY SILVERADO 2500HD BATTERY LIGHT FLASHES

2001 chevy silverado 2500hd battery light flashes intermittently. no problem with battery or alterntor. both tested ok. no problems with starting or running. voltage gauge reads just above 14. no problems with anything except battery light flashes. what could be the problem?

Posted on Nov 13, 2010

dj_relly999
  • 4070 Answers

SOURCE: 2003 chevy truck.after it sets

Hi and welcome to Fixya!

As a first course of action, I strongly suggest that you clean or replace the battery connectors if necessary. This may be the cause why the battery light is on.

Once the battery connectors are all set please tighten the cables.

Hope this helps and thank you for using FixYa! Have a good one!

Posted on Dec 26, 2010

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2 Answers

My car needing a jump threw out the day


Ok I would have the battery tested. While testing battery make sure all connections are clean and tight on the battery terminals. If battery checks out to be good. Test the charging system, alternator. If alternator tests good make sure you belts are not slipping or worn and stretched out as this could cause a an inconsistent charge. While doing the battery test if posible do a draw test to see if anything is during current all the time as this could be draining or weakening the battery.

Apr 13, 2015 | 2000 Chevrolet Blazer

1 Answer

My battery is getting drained and my truck will cut off but will start back up after a min its a 87 d-150 with a 318


Check the charging system. When running, the alternator supplies all current to run the electrical systems and to recharge the battery for its next use in starting the engine.

Put a voltmeter on the battery. With the engine off, the battery should show 12.6 volts at least, to know the battery is good and is charged up. Then with the engine running, check voltage again at the battery. If your alternator is working, the voltmeter should now show at least 13.5 volts. If less than that, the alternator may be too weak to keep the engine running.

Oct 25, 2014 | Cars & Trucks

1 Answer

1978 chev k10 alternator output 14.4 on bench, reads 9 amps on truck gauge 12.2 on ampmeter at battery with truck running why


amps reading on the truck amp meter is the current that is being generated to run everything as well as charge a battery that will be at best around 80% charged.bench testing an alternator gives these readings as the regulator is feeding into fully charged batteries with no draw on the system. When batteries are 100% charged the charge rate will be as low as 2 amps but in a car where there is a current draw for the ECM , ignition , fuel pump and what ever the alternator feeds these first before it charges a battery. You used a amp meter to get a voltage reading which is reading the voltage drop across the current draw. If you had used a voltmeter (multimeter) then you would see a voltage increase with the rpm increase. The

Aug 14, 2014 | Cars & Trucks

1 Answer

Problem with lights on my tracker it drain's my battery i have a good altnator on it


If the lights drain the battery when the engine is running, then you have a bigger problem of the alternator not charging, not working. When the engine is running, the alternator supplies all the current to run the car's electrical systems, while also charging up the battery for the next start-up. If you know the alternator is good, then maybe a fuse or fusible link has blown, preventing the alternator from working. To check, put a voltmeter on the battery with engine running-it should show over 13.5 volts if the charging system is working. If the alternator is not putting out, the voltmeter will read same voltage on the battery as when the engine is not running. A fully charged battery should show "around" 12.6 volts. A discharged battery will show less than 12 volts. That should give you an idea of the range to look for on a voltmeter. I believe some parts stores will check the voltage for free. I know most stores will test the alternator and battery for free if brought into the store, but you need the voltage read while on the car and engine running. If the system is charging normally and the lights kill everything, you may have a short in the lighting system.

May 05, 2013 | 1994 Geo Tracker

3 Answers

Battery going loes voaltage after few days


take your battery to a parts store. they will test it. It is probably shorting out inside and causing the loss. buy new battery.

Mar 11, 2013 | 1999 Audi A6

1 Answer

1996 lerado grand cheroke jeep, battery gauge went to to negative, no power new won;t stay running new battery, alternator checks out good any ideas


First check your battery get a cheap digital volt meter. Free at Harbor freight with a purchase. Fully charged battery 12.6 volts Not 12.5 or 4 or 3. With the volt meter set on DC volts touch the battery and have someone start the car if the meter shows high 13.5 to 14.7 the alternator is ok if it is less replace. If you have a dead short take out every fuse and relay from the black box under hood by the battery. Remember where they go and plug them one at a time until the discharge hits and at least you will know what circuit it is.They also sell about 20 dollars a plastic meter you hold over the positive battery cable to see if the starter is drawing to much power A battery open-circuit voltage test will show the approximate state-of-charge of a battery. This test can be used if no other battery tester is available.

Before proceeding with this test, completely charge the battery. Refer to Standard Procedures for the proper battery charging procedures.
  1. Before measuring the open-circuit voltage, the surface charge must be removed from the battery. Turn on the headlamps for fifteen seconds , then allow up to five minutes for the battery voltage to stabilize.
  2. Disconnect and isolate both battery cables, negative cable first.

118345962 Testing Open Circuit Voltage

  1. Using a voltmeter connected to the battery posts (see the instructions provided by the manufacturer of the voltmeter), measure the open-circuit voltage.

118345963
See the Open-Circuit Voltage Table. This voltage reading will indicate the battery state-of-charge, but will not reveal its cranking capacity. If a battery has an open-circuit voltage reading of 12.4 volts or greater , it may be tested to reveal its cranking capacity. Refer to Standard Procedures for the proper Micro 420 battery test procedures.


s than 13.5 alternator is bad

Dec 12, 2011 | 1995 Jeep Grand Cherokee

1 Answer

My Peugeot 206 (2002) has a flat battery. Tried to jumpstart it several times & heard a "click" noise twice, other times nothing. It was OK when we last drove it over 2 wks ago.


Check your battery with a voltmeter. Should be at least 11.6 volts to start car. Less than that, it needs recharged or replaced. Parts stores will check your battery condition for free. A load test should show if it's good or needs replacing.

Oct 30, 2011 | 2005 Peugeot 405

1 Answer

What is the expected output of a alternator in a Jeep 4.0L Sahara (yr. 2000)? My Jeep's ''check gauges'' light came on, and the battery gauge dropped to nothing. Checked the alternator (with a voltage...


You shoulld expect more than 12.8 volts from the alternator up to nearly 14 volts when charging a low battery. The battery can only show the amount of voltage your alternator is sending to it after being used for a while. I would suggest that you have the battery tested & recharged completely, your voltage will be above 12 volts and if it returns to below that , you will know your alternator is not charging. Also, if you test the output of the alternator and see it is below 12 volts after the battery is fully charged at 12+ volts you will have confimed the problem also.

good luck.

Jan 31, 2010 | 2000 Jeep Wrangler

5 Answers

Car wouldn't start. jump started let run 10 min disconnect battery and car dies. jumped start let run 45 min disconnect jumpers car ran 10 mins died


Alternator is not charging, have system checked at a local Autozone or Kragens for free. then you can purchase necessary replacement parts at the same time..

Oct 11, 2009 | 2002 Daewoo Lanos

4 Answers

Instrument panel went dead


Checked Every fuse in the fuse box (no small task).This includes #4 - Power point Instrument Panel, #14 - Day time running lamps (auto lamps doesn't work nor does auto lock), #27 - ignition switch run feed, #35 - Instrument Cluster, #41 - Instrument Cluster, #42 - Delayed Accessory, #45 - Ignition switch run/start feed, #102 - Door locks body security module, #103 - Ignition switch, #110 - Ignition switch, & #116 - Ignition switch. But I also check all other ones as well, they all register OK. AC panel & radio work. Turn signals work. Mileage does not work, trip computer does. So, basically, everything works except auto head-lights, auto locks, and the dash cluster (no MPH, RPM, mileage display, Fuel, Temp, Tran Temp, and Oil Pressure).

Aug 19, 2009 | 2003 Ford Excursion

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