Question about 2002 Chevrolet Blazer

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2002 TRAIL BLAZER BLOW AIR OUT BOTTOM & DEFROST ONLY

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Vacuum leak somewhere. did someone put in a aftermarket radio? most times they will screw something up when they do replace factory items.

Posted on Jun 13, 2014

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Posted on Jan 02, 2017

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morse008
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SOURCE: 1996 chevy blazer my air on heater will not blow

the idea of the switch is run on vacuum and is not making contact with the switch it self either worn contacts in the switch itself **** as an obstruction as well or the vent door is stuck in just that position either behind the glove box or the ash tray are the vacuum lines one of them may be pinched off or the door needs a bit of help until you can free it up

Posted on Sep 08, 2009

ourhowse
  • 2007 Answers

SOURCE: Air will blow out of floor vents and defrost vents

Probably a loose or broken vacuum line under the hood somewhere. With the engine running, wiggle all hoses around and listen for a hissing. Check the one that goes to the vacuum pot that bolts to the under side of the hood. There is also one that runs just on the left side of the air breather that is prone to cracking from heat.

Posted on Jul 14, 2010

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Horn saturn vue


It depends on how many amps the 2010 trail blazer horn uses & the size of the fuse for the horn in your saturn. The horn for the trail blazer should be labled on it somewhere as to how many amps it uses & you can find the horn fuse rating in your Saturn by looking in the owners manual. If U can't find or dont have the Saturn owners manual find the fuse block and the horn fuse location should be labled look for the fuse rating on this fuse, pull the fuse itself if U have to but remember to put it back. If you know the rating 4 the trail blazer horn and the Saturn horn before you try to switch them it will save U time and you wont fry the horn wires possibly in the Saturn. Good luck!!

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Why does my battery light come on in my '02 trail blazer


It's usually on if the alternator isn't charging. You'll have to connect a voltmeter to the battery terminals. If it reads 14 - 14.5 volts you'll have to look elsewhere. If it reads below 13 volts the charging system is not working. The alternator is quite often the problem.

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My fan on my 2002 envoy is staying engaged alot and really loud. How do I determine if it is the fan going bad or a sensor feeding it?


I think the Envoy has the same setup as the Trail blazer and If so its the fan. I replaced the fan on my parents Trail Blazer 2 times in the 7 years they had it . It would start sounding like an air plain taking off when you would first pull out of the driveway

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Air will blow out of floor vents and defrost vents but not out of the air vents in the dash on my 2002 chevy trail blazer.


Probably a loose or broken vacuum line under the hood somewhere. With the engine running, wiggle all hoses around and listen for a hissing. Check the one that goes to the vacuum pot that bolts to the under side of the hood. There is also one that runs just on the left side of the air breather that is prone to cracking from heat.

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I have a 2002 trail blazer when i turn on the air conditioner the motor starts to loop.


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once u take off the belt.see the holes in the pully put socket in the hole once u line them up with the 3 bolts to take it off

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