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2003 Gmc Sierra Electrical?

02kane

By 02kane
in Ask A GM Technician

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02kane Enthusiast

02kane

Posted
Posted

Hi i have a 2003 gmc sierra i bought new in 03.Well this year its starting to break down on me.First drivers front wheel beraing,sterring box bearing is gone.Last week my temp.and compass light burnt out in my rear view mirror.Now to my most recent problem.I started my truck the other night with my auto start like i always do.Got in hit the power locks for the wife and nothing.I have no power in my passenger door at all.My power windows,locks,mirror and entery lights all don't work on the passenger side.Even my power mirror won't work but the buiult in signal light in the mirror still powers up. Any ideas what could be wrong? Thanks for your time!

BKfirefighter3221 Enthusiast

BKfirefighter3221

Posted
Posted

It looks like everything goes through the passenger door module and then off to the BCM. Even the light on the mirror. Here are some diagrams, hopefully they will help. First I would check power and ground at the passenger door module, then the different inputs/outputs... Good Luck!

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BKfirefighter3221 Enthusiast

BKfirefighter3221

Posted
Posted
It looks like everything goes through the passenger door module and then off to the BCM. Even the light on the mirror. Here are some diagrams, hopefully they will help. First I would check power and ground at the passenger door module, then the different inputs/outputs... Good Luck!

 

 

Don't a just love it when they over engineer the simple stuff! Also, if you have access to a scan tool that can get into the body control module there may be codes in there. Especially since the BCM and Pass. door mod. comunicate on the class 2 data stream, oh and if there are codes in the BCM they generaly do not set any warning lights on the dash...

AlenWoods Enthusiast

AlenWoods

Posted
Posted

hey! i have the same problem with the compass/temp in the rearview mirror i dont know how to fix it. Sometimes it works and sometimes it doesnt.. what do i do?

BKfirefighter3221 Enthusiast

BKfirefighter3221

Posted
Posted
but if it was a fuse... It wouldnt work at ALL right?...

 

 

Yes you're right, unless there is a crack in the fuse and could make it an intermittent problem.... But not likely. I think a lot of people don't know or forget that the fuses are circuit protection similar to a circuit breaker in your house. The only way they fail is if the circuit is overloaded. Now in a house this usualy means you had something plugged into an outlet that pulled too many amps, well on a vehicle every circuit is designed to draw a certain amount of amps and if a fuse blows that means something on that circuit has failed. It could be a wire shorted to a ground or a component that is the problem, but fuses just don't "go bad." If the problem is intermittent replacing the fuse might make it work for a while but usualy it fails again eventually.

  • 2 weeks later...
02kane Enthusiast

02kane

Posted
  • Author
Posted

I just got back from holidays but i figured out the problem with my door before i left.It must of been a computer problem with the truck or the command start.I unhooked the battery overnight then re-hooked in the morning and everything was fine.

minibike132 Senior Enthusiast

minibike132

Posted
Posted

You had logic lockup, there is a reflash for it if it happens again. Before flashing the module it needs to be unlocked by cycling power to it like you did.

 

 

Some customers may comment on any of the following conditions:

 

• The RKE key fob does not function.

 

• The RKE has a very limited range.

 

• The passenger door will not unlock from the passengers or drivers door switches.

 

• The passenger door window is inoperative.

 

Correction

Important: For clarification purposes, the following information is provided. The components involved in this bulletin are known by various names. The Service Information Document ID #849813 refers to the component as the Door Lock and Side Window Switch. General Motors Service Parts refers to the components as SWITCH DR LK & SI WDO. Within this component is a micro processor that is referred to as the Passenger Door Module (PDM). Techline equipment refers to the component as the PDM Passenger Door Module. This bulletin addresses issues with the software of the microprocessor in the Passenger Door Module (PDM).

 

Perform the following procedure step by step (do not skip a step) to determine the proper course of action.

 

Important: Verify the software version in your Tech 2. If the software is not 23.001 or newer, your Tech 2 software needs to be updated.

 

Determine the production date of the vehicle by viewing the certification label on the driver's door.

• If the vehicle's month of production is PRIOR to 01/03, go to Step 2.

 

• If the vehicle's month of production is 01/03, THIS BULLETIN DOES NOT APPLY. Refer to Customer Satisfaction Program bulletin 03011, published March 2003.

 

• If the vehicles month of production is 02/03 or newer, this bulletin does not apply. Refer to published Service Information for the symptom experienced by the customer.

 

Use the Tech 2 to determine the PDM operational software release number.

• With the Tech 2 installed and powered up, verify the software version. If the software is not 23.001 or newer, your Tech 2 software needs to be updated.

 

• Press Enter.

 

• Select: Diagnostics.

 

• Select model year: 2003.

 

• Select: Light truck.

 

• Select : Body.

 

• Select the proper Product line.

 

• Select the proper HVAC Type.

 

• Select the proper Radio System type.

 

• Select: Passenger Door Module.

 

• Select: Data display.

 

• Select: Module 1 information.

 

- If a number is displayed following "Operational S/W Part Number" , continue with the next bullet.

 

- If an (*) is displayed following "Operational S/W Part Number" , go to Step #3 below.

 

• If the "Operational S/W Part Number" is 15181562, 15186199 or 15186460, exit out of this bulletin procedure. Refer to Service Information to diagnose the condition reported by the customer (the vehicle has the most current software as of the date of this bulletin).

 

• Exit to the Main Menu.

 

• Perform normal SPS reprogramming of the Passenger Door Module.

 

• Go to Step 4.

 

If an (*) is displayed following "Operational S/W Part Number" , return to the screen which will allow you to select the Passenger Door Module by pressing Exit (3) times.

• Select: Passenger Door Module.

 

• Select: Special Functions.

 

• Select: Refresh.

 

• Follow all on-screen instructions.

 

• When the Tech 2 displays "Refresh Procedure Successful", Exit to the Main Menu.

 

• Perform normal SPS reprogramming of the Passenger Door Module.

 

• Go to Step 4.

 

Return the vehicle to the customer.

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