Question about 2004 GMC Sierra 2500

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Where can I get a free wireing scematic for a 2004 GMC 2500 Heavy duty truck?

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  • jesus Rojo May 11, 2010

    HI wiring schematic for what system

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Posted on Sep 25, 2009

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Tail and marker lights not working on trailer circuit, stop and turn signals work fine, 2004 gmc sierra 2500 hd


I would try hooking the trailer up to another vehicle and see if everything works right if everything works on the trailer I would start testing the trailer plug on your truck could be a wire has broken.

Jul 26, 2015 | 2004 GMC Sierra

1 Answer

Where's the coolant level sensor located on a 6.0 '02 Chevy 2500 HD Silverado?


this might be important for you to know
Quote:

08-08-49-002: False Triggering of Low Coolant Level Warning Message (Reprogram HVAC Control Module) - (Feb 13, 2008)

Subject:
False Triggering Of Low Coolant Level Warning Message (Reprogram HVAC Control Module)

Models:
2007-2008 Chevrolet Silverado 2500 and 3500 Heavy Duty Series Only
2007-2008 GMC Sierra 2500 and 3500 Heavy Duty Series Only
with 6.6L Diesel Engine (VIN 6 -- RPO LMM)

--------------------------------------------------------------------------------
Condition
Some customers may comment that a "COOLANT LEVEL LOW ADD COOLANT" message is displayed in the Driver Information Center (DIC) even though the coolant level is normal.

Cause
This condition may be caused by a false reading during off-road driving or in high slush conditions.

Correction
Do This - Reprogram the HVAC control module.
Don't Do This - Do not replace the coolant level sensor, HVAC control module or radiator surge tank.


A revised calibration has been developed to address this condition. Technicians are to reprogram the Heating Ventilation and Air Conditioning (HVAC) control module with the latest software available on TIS2WEB. Refer to the Service Programming System procedures in SI. As always make sure your Tech 2 is updated with the latest software version.


Warranty Information
For vehicles repaired under warranty, use:
Labor: Operation D4707
Description: HVAC Control Head Module or Assembly Reprogramming with SPS
Labor Time: Use Published Labor Operation Time

Dec 02, 2013 | 2002 Chevrolet Silverado 2500HD

1 Answer

2004 GMC Savana 2500, blower fan doesnt work


There is a good chance that there may be some debris lodged in the fan itself. Or... the wiring is loose.

Feb 05, 2013 | 2004 GMC Savana

1 Answer

AC blower sounds like it is blowing full speed but there is hardly any air coming out of vents 2004 Dodge Ram Heavy Duty 2500 Diesel


sounds like a door actuator motor that is not working,the dash will have to be removed to repair the problem

Apr 30, 2010 | 2004 Dodge SRT-4

1 Answer

2007 ram mega cab 1500 is maint different than 2500


The difference in chasis means you can tow more or haul more, the truck is better equiped with a heavy duty suspension componets, heavy duty transmission, etc, Look through your owners manual for service requirments and intervals. If the vehicle has a warrenty make sure the dealer does the service to keep it inline with the warrenty, some things you can do to the vehicle yourself, others must be done at the dealer unless of coarse the vehicle isn't under warrenty.

Feb 04, 2010 | 2007 Dodge Ram 2500 Mega Cab Laramie

3 Answers

How to reset the check engine light for my gmc 2500 sierra heavy duty pick up truck


hey can u help me 2 How to turn off the check engine light for my 2000 vw golf 2.0 automatic ,,,,thanks

Jan 23, 2010 | GMC Sierra 2500HD Cars & Trucks

2 Answers

Front end knock when on bumpy roads. New ball joints and stabilizer links did not fix it?


replace your shocks with a good heavy duty for light duty trucks(i know sounds goofy). rancho makes good ones as well as king.

Jan 08, 2010 | 2004 Dodge Ram 2500

1 Answer

Will my 2004 heavy duty 3/4 ton with a cummins diesel engine, 6 speed standard transmission tow a travel trailer that weighs 14,000 lbs???


The maximum towing capacity of 13,750 and you should not exceed what the manufacturer recommends as you can cause serious harm to your vehicle, yourself, and / or others.

When considering the maximum towing capacity, you also have to consider passenger weight, luggage, etc as all this will reduce the overall capacity... I.e. if you've got 1000lbs in the trunk and 3 passengers plus the driver, your capacity has already dropped to around 12,000

Sep 09, 2009 | 2004 Dodge Ram 2500

1 Answer

REMOVING SPARK PLUG WIRES


there are some special pliers for removing spark plug wires.

Oct 08, 2008 | 2004 GMC Sierra

1 Answer

2007 gmc sierra 2500 IAT sensor


Well, the IAT (Intake Air Temperature) sensor is located on the air intake duct between the filter and the throttle body (Assuming you have the 6L motor). The wires are easily visible at the plug that connects the sensor to the wiring harness. That's the easiest place to access them.

May 18, 2008 | 2004 GMC Sierra 2500

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