Question about 2004 Chevrolet TrailBlazer

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I have a 2004 chevy trailblazer. ABS is out, air conditioning/heat is out, 4 wheel drive, and cruise control out. I've had relays tested and I know one of them is bad, but I don't know where they are or how to change them. Any suggestions? i

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Look under the hood for a black box nearly the size of a battery. Pull off the cover and all the relays are under there.

Posted on Dec 04, 2014

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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 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.


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 !

Dec 02, 2016 | 2004 Chevrolet TrailBlazer

1 Answer

2004 chevytrailblaZer ac/ heating doesn't blow any air front or rear and control panel doesn't work , abs & brake lights came on also, what could be problem?


Check under the hood in the fuse and relay center for a popped fuse. The information about each fuse or relay is under the lid of the box cover.

Jul 15, 2016 | 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

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

Diagram of fuse box


62624464

This is for a 1.8T engine car...
1 - Heated washer nozzle 5A 2 - Turn signal system 10A 3 - Light for glove compartment, air
conditioning, selector lever 5A 4 - License plate light 5A 5 - Instrument cluster, heated seats, cruise control test plug, air conditioning 10A 6 - Control module comfort system 5A 7 - ABS 10A 8 - Automatic headlight beam
adjusting, telephone system 5A 9 - Heated Mirrors 10 - CD changer unit 10A 11 - Cruise control by automatic transmission 5A 12 - B+(battery positive voltage) for on board diagnostic (OBD) 10A 13 - Brake lights 10A 14 - Comfort system 10A 15 - Instrument cluster, automatic transmission 10A 16 - ABS/ASR 10A 17 - Navigation 10A 18 - Right headlight, high beam 10A 19 - Left headlight, high beam 10A 20 - Right headlight, low beam 15A 21 - Left headlight, low beam 15A 22 - Parklight, right 5A 23 - Parklight, left 5A 24 - Wiper system 25A 25 - Fresh air blower, recirculating control air conditioning 30A 26 - Rear window defogger 30A 27 - Rear window wiper system 15A 28 - Fuel pump (FP) 15A 29 - Engine control 20A 30 - Sunroof 20A 31 - Back-up lights, cruise control, automatic transmission 15A 32 - Engine control 20A 33 - Cigarette lighter 15A 34 - Engine control, injectors 15A 35 - Trailer socket 30A 36 - Fog lights 15A 37 - Radio system, telephone system 20A 38 - Comfort system 15A 39 - Emergency flasher system 15A 40 - Dual horn 25A 41 - ABS 25A 42 - free 25A 43 - free 10A 44 - Heated seats 30A

Nov 19, 2009 | 1998 Volkswagen Passat

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

3 Answers

Lights on dash stay on and ac/heat fan does not work.


Your Ignition switch is not feeding 12 volts to the orange wire it feeds the accesory circuit. mine was melting poor design..

May 30, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

No power leaving the relay


Are you testing the relay when the engine is cold?
The air injection pump works for a very short period of time during initial cold engine start.

Once the exhaust stream is warm enough to support O2 sensor function, the pump shuts off and will not come on again until conditions are met.
Let me know.
Regards,

Apr 30, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

When I turn on air or heat the brake lights and 4


Check the main fuse box under the hood on the drivers side. You should do it with an ohmmeter. good luck. The cruise control is probably the door lock module. Are your interior lights stuck on?

Feb 22, 2009 | 2004 Chevrolet TrailBlazer

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