Question about 2002 Chevrolet Blazer

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2002 Chevy Blazer

Unhooked negative batterie terminal to hook up a stereo and now it won't start. It just won't turn over all the way.

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You could be draining the alternator and battery with the new stereo..depending on how you hooked it up you might try charging the battery back up.you were supposed to take off the pos cable not the negative

Posted on Aug 20, 2008

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Drains battery while sitting


Here is how to detect a drain in system! Use a test light, Hook up test light to the negative terminal on battery. ( unhook terminal first.) connect opposite end of test light to negative on battery. If a drain, light will be on. Start pulling fuses from fuse box. when the test light goes out, that is the problem curcuit. let sit 3to5 minutes before pulling fuses. Good-Day!

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2002 chevy blazer wont start when temperature falls below 20, when I turn the key on I can hear the selenoid cliking but the starter wont turn over head lights dont dim sometimes after trying a few times...


Start by cleaning the battery terminals with baking soda. Start with the negative, then positive. Then reconnect the positive and then negative. If you can remove the battery vent caps check for low acid level. Fill with distilled water if low.

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Trucks been rolled , now won't crank


Try this.
Take a positive battery jumper cable and hook it directly to the big lug terminal on the starter solenoid that the cable hooks to from the battery.
Take the negative jumper cable and hook it to a good steel, iron, or aluminum ground connection right by the starter, on the motor.
Now try the key to start it.
If it still says nothing, I'm thinking you have some wire harnesses unhooked from the rollover.
Someone really good could take a little jumper wire and connect the tiny terminal on the starter solenoid (which goes to the key switch), to the positive battery cable, and that should make the starter work, hopefully.
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1 Answer

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Unhook the positive and negative battery terminals pull out old battery put new one in and hook up the positive and negative terminals again (red is positive and black is negative)

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1 Answer

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Myguess is that you have an electrical short which is causing a drain on the battery. The way to check this is to get a 12 v test light. Unhook the negative side of the battery. Hook the test light up between the negative battery post and the battery cable. If the light comes on, You have a short/drain. To find where the short is, you leave the test light hooked up. Then you start pulling fuses until the light goes out. However, your car stereo needs to be completely unhooked before you do this test because most stereos have a constant electrical source so that the clock stays accurate and the memory stays active so your programed stations don't get lost. GOOD LUCK> Keith Lewis-Dayton,Wa.

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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,

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1 Answer

1996 blazer wont start after I replace a few a/c parts


Re-check battery terminal and make syre they are tight and making good contact, check for corrosion and remover all if ther is any. Check main battery fuse and make sure it good. Check battery cables and ground wires. Good Luck

Dec 18, 2008 | 2000 Chevrolet Blazer

2 Answers

2002 Chevy Blazer


take the pos cable off leave it off for a bit and see if it wont reset

Aug 20, 2008 | 2000 Chevrolet Blazer

1 Answer

2002 chevy blazer


have you tried to jump start the truck?

Aug 20, 2008 | 2002 Chevrolet Blazer

2 Answers

Chevy blazer wont start 2002


if it turns over there are a cocuple of things to check. crankshaft sensor and the coil pack maybe the computer.id start with the crankshaft sensor

Jun 29, 2008 | 2002 Chevrolet Blazer

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