Question about 2004 Chevrolet TrailBlazer

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2004 chevy trailblazer when I turn on the air con my dash lighs for ABS and Brake come on, my cruise goes off and the air con will not work.

I can not find where these systems are inter connected except via the computer. Help Robert, in Livingston, TX

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  • Chevrolet Master
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Have you had the vehicle checked for DTC'S - diagnostic trouble codes ? I would start there first . Battery , charging system all good ? What computer , the ABS has a control module all to it self . The Air con has a relay in the under hood fuse box controlled by the PCM / engine computer . If there is a problem with ABS , The EBCM - electronic brake control module will turn on ABS and the red brake light .
A low voltage condition could cause this problem , but I would expect more of the lights to be lit on the dash . Including the check engine light , battery light . This are not connected , Power or ground wise . Have the vehicle checked for codes , that should be the first place to start any diagnostic's always !

Posted on Dec 02, 2016

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1 Answer

Abslight stays on. How to fix? This is a2007trailblazer?


First you need to have EBCM - electronic brake control module check for DTC'S - diagnostic trouble code's . If the light is on there is a code stored . I think most part stores can do this and for free . After you find out what code is stored , looking up that code in service repair information for diagnostic trouble shooting chart would be next step . There are a few codes too.
DTC C0035 or C0040
DTC C0045 or C0050
DTC C0110
DTC C0131
DTC C0161
DTC C0186
DTC C0196
DTC C0201
DTC C0240
DTC C0241 or P0856
DTC C0244 or P1689
DTC C0245
DTC C0283
DTC C0287
DTC C0290 or C0292
DTC C0455
DTC C0550
DTC C0558

Find the code do the diagnostic's , fix the problem , wiring issue's , a sensor , bad module ,what ever it is . The light will go out then . Here is a sample of code discription .
• DTC C0035 Left Front Wheel Speed Sensor Circuit
• DTC C0040 Right Front Wheel Speed Sensor Circuit

Dec 30, 2016 | 2007 Chevrolet Trailblazer

1 Answer

2004 chevy trailblazer how to remove the abs


just pull the fuse will take less than a minute or removing system a few hrs if all goes well because to remove the sensors you have to remove the wheels and rotors and unbolt it from hub which will leave a 1/4 inch whole open to the hub ---to remove the abs uni need to remove the hard line brake lines add short lines and bleed the whole system by removing the fuse the system will be standard power brakes

Sep 28, 2015 | 2004 Chevrolet TrailBlazer

1 Answer

2004 chevy trailblazer brake and abs light stays


on my old 1996 blazer.. the little wire coming from the battery +
positive terminal goes to the ABS.
...this needs to be attached properly.
with some snowPlow setups. its a good idea to disconnect the ABS...so the truck will Stop.
....proper bleeding of the ABS brake circuit may be needed.
..best idea.........see GM dealer.

Oct 19, 2014 | 2004 Chevrolet TrailBlazer

1 Answer

2004 Chevy trailblazer abs brake light on all the time


undewr the hood under the master cylinder..and it can be a bear to change..

Dec 24, 2013 | 2004 Chevrolet TrailBlazer

1 Answer

CRUISE CONTROL WON'T WORK ON 2005 CHEVY TRAILBLAZER


check cruise control fuse and check the brake lights see if brake light working because the brake light switch will deactivate cruise control when brakes is applied.if brake lights dont work either fuse blowed or switch bad.if all is good have vechicle code scan because cruise control control by PCM and vechicle speed sensor and thottle actuator control motor.

Apr 17, 2013 | 2004 Chevrolet TrailBlazer

1 Answer

2005 chevy trailblazer - no cruise control and brake lights only work when key is turned off


I would check the turn signal switch. The cruise and turn signal are on the same switch. The brake lights go through the switch before going to the brake lights. And the turn signals don't work with the ignition off.

Jan 30, 2013 | 2005 Chevrolet TrailBlazer

2 Answers

Where is the cruise control fuse in a 2004 chevy trailblazer?


Gotta tell you, this question had me a little confused. Below are 2 wiring diagrams for you. One is for the cruise control circuit and the other is for the air conditioning circuit. The reason I gave you those is because it seems according to the wiring diagram in the cruise control that the fuse for the cruise control goes to the HVAC (air conditioning). According to the wiring diagram for the A/C yes that fuse also controls the ignition power for the A/C controller. In any case the fuse that would cover the cruise control is the number 30 fuse in the fuse panel located under the hood of the vehicle. Below is a picture of the location of the fuse panel and also fuse layout diagrams for the 6 cylinder and 8 cylinder engine vehicles as they have different layouts depending on the engine size. I hope this helps you and good luck.


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Jun 10, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

How difficult is it to replace the blower motor resistor on my 2004 Chevy Trailblazer LS - is it behind the glove compartment or do I have to get into the dash?


BLOWER MOTOR RESISTOR IS BEHIND GLOVE COMPARTMENT.FIRST TURN OFF RADIO THEN REMOVE NEGATIVE BATTERY CABLE AND LEAVE IT DISCONNECT TO DISARM AIR BAGS WAIT 20 MINUTES ALLOWING AIR BAGS DISCHARGING.BEFORE WORKING AROUND STEERING WHEEL OR DASH AREA.

Aug 01, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

2003 trailblazer loss of cruise control and ac fan


for parking brake and abs check for parking brake switch operation, for abs check with scan tool for any trouble code, for your cruise control unit check for any broken vacumm hoses on the engine, for the ac fan, check the fan motor, relay or fuse.

Jul 16, 2009 | 2003 Chevrolet TrailBlazer

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