Question about 2000 GMC Envoy

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2000 blazer drawing power

My dash has a draw that drains the battery. If I pull the fuse out that controls the radio, dash, heater control the draw goes away. Used process of elimination and found that it was the dash creating the draw. How can I check the dash or anywhere in IL to get it fixed?

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I would start by looking at the cigarette lighter. Sometimes they build up such a large amount of corrosion that it actually can cause a draw on the battery.

Posted on Jun 20, 2009


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Battery drain, fuse #12 in 2000 Jeep Grand Cherokee

On the 2000 Jeep Grand Cherokee the # 15 fuse is the IOD circuit. (Ignition Off Drain) The # 12 fuse is the power windows. Both fuses are 50 amp.

This IOD fuse #15 powers the distribution box that contains the 50 amp fuse. Pull each fuse in the under hood.

Pull each fuse in the under dash. Check for on the passenger side floor is an additional fuse panel.

Before going to far suggest at night checking for any lights lit. The draw is about right for a small light bulb.

Typical draw for parked car is around 100 milliamps

Suggest that you disconnect power to the car for several minutes. Reconnect the battery. The object is to reset the body electronics module.

If the computers in the modules get a glitch they can cause a drain. By cycling the power, disconnecting battery, they will reset to factory settings. Reported it can take up to 20 minutes for the circuits to drain before you can reset!.

26255032-5gjksekvxmweb1huyds5yay0-2-2.jpg The Jeeps have several modules that can cause a drain
Jeep Grand Cherokee WJ Electronic Control Modules

the following web site does a great job of explaining all that is going on. What appears to be simple to troubleshoot is not so easy. He comments about delay before sleep are important. Testing after overnight may result in a different drain rate. Make sure that your battery meets specifications. In 2000 the drain rate may be relatively high and the reserve capacity of your battery low.
Hope this helps?

Aug 08, 2016 | 2000 Jeep Grand Cherokee

3 Answers

Battery drains overnight.

Year make and model, and what have you checked so far ?

Oct 13, 2015 | Cars & Trucks

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What would make the battery go dead sitting 2 days without being cranked

Connected ? Could be a light or fault on alternator draining.if it loses charge disconnected battery is finished

Oct 01, 2015 | 2005 Jeep Grand Cherokee

1 Answer

Battery drains over night. Fuses have been tested. Pulled radio fuse but thrre is still a draw.

You need to isolate the draw by installing an ammeter in series with the battery. Remove the negative cable and hook one end of the meter to the cable and the other to the battery and see what amperage is drawn. Start removing fuses one at a time till the draw on the meter drops. This will tell you what fuse it is and what that fuse controls. You then have to find what is causing the draw from what the fuse controls. This can be a tedious task.

Sep 13, 2015 | 1999 Lincoln Continental

1 Answer

Battery draining out checked alternator lights radio etc please advise new battery fitted aswell

You need to do a parasitic draw test with a amp meter hooked up in series with negative battery post an negative battery cable ! Check how much draw there is an then pull fuse's till you see the draw go away . Find a wiring diagram of power flow for that circuit to see what all is powered by that fuse . How To Perform Parasitic Draw Test EricTheCarGuy

Jul 09, 2015 | Cars & Trucks

1 Answer

2006 cadillac srx 3.6l it has a 2.5 amp draw with everything off. reading taken between battery ground post and ground cable. i have removed every fuse and relay (one at a time) in all three locations...

Hooking between the neg. post an neg. cable an pulling fuse's is not a good way to do a parasitic draw test on your vehicle . Pulling fuse's wakes up module's an you will see a draw . You need to do it non-intrusively . Your vehicle has a bunch of control modules an pulling fuse's will wake them up. Try this way .
The BEST Way TO Perform Parasitic Draw Test
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Dec 11, 2017 | 2006 Cadillac SRX

1 Answer

91 buick park avenue. Battery is being drained.

If the battery is ok (you did a load test?) and all is well without the fuse being in, then there is still an unusual draw, which is measured in amps, not volts - use an ammeter inline with the fuse. One of the most common causes of this problem is a light that won't shut off the way it is supposed to, such as the underhood service light or the trunk light. Any short would blow the fuse.

Jan 10, 2018 | 1992 Buick Park Avenue

1 Answer

My 2000 chevy blazer is having battery issues.i have had the battery a year and replaced the altinator a year ago,and something keeps draining the battery.I can't seem to figure this one out

if you have an volt meter capable of reading amperage you can check for a draw fairly easily.

Turn off the vehicle, remove the key, unplug any accessories from the 12 volt (cigarette) outlets, and disable the under hood light if equipped.

Disconnect the negative battery cable from the battery. Install your amp meter in series, one lead on the negative terminal of the battery and one lead on the negative terminal of the battery cable. You should see less than .050 amps. It may take up to 20 minutes for everything to power down so don't worry if you see more right away.

If after 20 minutes it does not drop lower than .050 amps you have a draw. You can start removing fuses from the underhood fuse block one at a time. If the draw goes away than you have just narrowed down the possibilities to that circuit. Post what fuse you pulled and I can help you further.

If none of those fuses cancel the draw remove one of the test leads. Open the drivers front door and remove the courtesy lamp fuse from the instrument panel fuse block located behind the access panel on the end of the left side of the dash. Reinstall test leads and then start removing those fuses one at a time.

Some common draws are aftermarket stereos, glove box lights, visor mirror lights,

Nov 24, 2010 | 2000 Chevrolet Blazer

2 Answers

Have a 2000 chevy blazer overnight something kills battery

Yes you need it,it controls lighting and such.What you were told,and what is tested,and diagnosed,is another thing,so ,do this,Unplug the alternator plug in on the alternator,and see if it goes down during the night,if it does not,replace the alternator.The regulator in the alternator could be open.Or a diode in the alternator could be blown.Have the alternator checked on the vehicle at the battery also,the auto parts store will do this for free.

Nov 12, 2009 | 2000 Chevrolet Blazer

1 Answer

Battery drained last week and radio power clicked on and off at a slow rate for about a day, even though car started fine. Suspect water caused the radio to draw current? How to fix this 2000...

You can always verify if it is your radio that is drawing the current of your battery down or at least you can narrow it down to which circuit it is. Remove the negative battery terminal and connect the negative side of a test light to the negative cable. Then place the positive side of the test light on the negative battery terminal. If you have a current draw the test light will light up. Now just start pulling fuses one at a time until the light goes out. Then you know which circuit is the culprit.

Jul 02, 2009 | 2000 Chrysler Town & Country

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