Question about 2004 Chevrolet TrailBlazer

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Have a 2004 chev trailblazer when you turn the ac on won't idle but ok with ac off What is my problem

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I am not familiar with this model but I would guess that your ac pump is partially seized or seized completely. When you turn on the ac a clutch engages in the pump and puts a load on the engine to run the ac. If the pump is very difficult to turn the engine will struggle to keep going.

Posted on Apr 08, 2019

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Allen, this is a $8 fix for the I6 engine. Prior to this happening, you disconnected the battery for whatever reason right? Remove fuses # 10 and #28 under the hood. Remove your throttle body, and clean both sides of it with a rag and a toothbrush with a sensor safe spray like Seafoam ($8 roughly). When done, hook everything back up, re-insert the fuses, done, problem solved. Very very common.

Posted on Apr 08, 2019

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Faulty idle boost solenoid

Posted on Apr 08, 2019

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  • 12 Answers

Check the idle air control device on the intake

Posted on Apr 08, 2019

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Posted on Jan 02, 2017

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SOURCE: dual control ac blows hot air 2004 chev silverado

try this, it may work ,may not. unhook the battery for a few minutes, then hook it back up.. now turn the key on, but dont start the truck for 2 minutes. now start the truck, it may reset????

Posted on Sep 22, 2009

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SOURCE: 2004 Chevy Trailblazer We had to replace the

For the stalling issue, the throttle body needs to be cleaned, grime in this area prevents the throttle plate from closing completely and allowing air to enter, making the air/fuel mixture lean.
The dead speedometer could be a bad stepper motor in the instrument cluster or a bad speed sensor on the transmission. If the cruise control is not working, the problem is most likely the speed sensor.

Posted on Oct 18, 2010

ryanlutton
  • 1239 Answers

SOURCE: 2004 Chevy Trailblazer idles rough.

If it has not pulled any codes (idiot light). Clean your throttle body, and change your spark plugs with A/C Delcos #41-103, most other brands will cause rough idle like Autolites and Bosch. This would be a cheap way to fix this problem.

If by chance you have just recently changed the battery or had the battery unhooked. Let me know, it's an easier fix that costs virtually nothing.

Posted on Nov 22, 2010

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SOURCE: how can i turn off my windshield wipers on my 2004 trailblazer they won't turn off

There are only to things which could cause this.The wiper motor cover or the switch itself.Which is part of the multi-function switch.The cover is cheaper.It is located under the air inlet grill.The cover is on the wiper motor itself.There is a circuit board on here that causes this problem.It is the part you need to replace.Hope this helps.Good luck.

Posted on Dec 07, 2011

willisbig81
  • 6 Answers

SOURCE: starter on 2004 chevy trailblazer

When my battery goes dead and the key is in the acc postion then i cant get the key out

Posted on Feb 12, 2012

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1 Answer

2004 chevy trailblazer idles up and down when heater is turned on


Not just the heater, but the defroster only. Turning the AC on will do the same thing. You need to clean your throttle body with the battery disconnected to fix this problem.

Oct 01, 2014 | 2004 Chevrolet TrailBlazer

1 Answer

When i cut the fan on with the defroster the motor idle down and cut ingine off I have a 2004 trail blazer.


the ac clutch engages any time a defrosters on if you have a ac problem unhook the ac compressor that should take care of it till you have ac fixed

Apr 05, 2013 | 2004 Chevrolet TrailBlazer

1 Answer

Previa rear ac switch won't turn on. relay, resistor and all fuses ok.


may be you should make a diagnostic and you can do it in a garage or you can do it by yourself if you want to do it by yourself you need some tools and you can find some good ones here: http://www.spobd2.com

Feb 17, 2013 | 2004 Chevrolet TrailBlazer

1 Answer

When im at a red light i turn on my ac and my engine gos off . but i can run my ac when im on the highway or im moving in the car. but when im getting ready to come to a stop i have to turn off the ac or...


Problem could be a number of things:
  1. worn or slick drive belt - drive belt slips and with AC on could cause stalling
  2. bad MAF (mass air flow) sensor
  3. dirty EGR valve
  4. bad TPS (Throttle Position Sensor) - controls idling speeds under all conditions ie. engine is cold, warm, running with AC on

Sep 08, 2011 | 2005 Chevrolet TrailBlazer

2 Answers

2004 trial blaz. 4.2 eng. ran fine, but service eng. light on, i put 2 map, & 3 coolant sensor in, after each, coolant sensor the blaz, won't idle, when ac. is on, down rd. with ac. on, ok, but tac...


Hello: Remove the ducting going from the air cleaner to the throttle plate, clean the carbon off the throttle plate and the throttle body bore. Do not spray excess carb cleaner into the throttle body. Hold the throttle plate open with your hand and spray carb cleaner on a soft rag and clean off carbon. When finished key on engine off for 10 seconds key off for 10 seconds do this a total of three tines.

Jun 27, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

Dual control ac blows hot air 2004 chev silverado


try this, it may work ,may not. unhook the battery for a few minutes, then hook it back up.. now turn the key on, but dont start the truck for 2 minutes. now start the truck, it may reset????

Sep 22, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

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