Problems With Upgrading Side Mirrors

madmax044 · February 13, 2008

Sorry for not introducing myself before I ask my first question, but this problem is really making me mad. I bought a 2007 2500HD with no power accessories. I decided to upgrade to power windows, door locks, and power side mirrors. So, I bought my side mirrors from ebay for a pretty good price. They are off of a 2007 silverado and have everything but the auto dimmer. Here is my problem.....the mirrors come with a ten pin cannon plug and they won't plug into my existing wiring harness. Now I have been searching for a wiring diagram for the truck that will tell me what wire is what, but all the diagrams that I find leave that portion of the wiring out. So.....now I am at a loss. Has anyone run into this problem before? Do any of you have a wiring diagram with this part included, or at least can point me to a site that has it? Thanks in advance for all the help.

Ranger · February 13, 2008

You may not have the correct wiring harness setup...If you got it off a NBS Silverado and have a Classic 07 HD then the controls probably don't match up...In addition if your vehicle didn't come from the factory with power options then it may not have the proper hookups already in place.

Mikeee · February 14, 2008

My '03 is a work truck, no options. And the wiring harness has no extra wires.

Not like the old days of one harness for all build options.

HawkScot · February 14, 2008

Try looking at some of the aftermarket mirror websites. Some of them have instructions for splicing wires and adding switches, etc. You might find some information to help solve your problem.

MS3DALE · February 14, 2008

Heres a bulletin on this.....

Document ID# 2008538

2007 Chevrolet Silverado - 4WD

Subject: Swapping Outside Rearview Mirrors RPOs DL8 / DL3 / DPN - keywords rear power folding camper change door body out side #PIT4417B - (08/31/2007)

Models:

2007-2008 Chevrolet Silverado

2007-2008 GMC Sierra

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

Some owners may request to have a different style mirror installed on their vehicle or request a different mirror before they purchase the vehicle. The new electrical architecture for the Silverado and Sierra has made swapping of the mirrors a more involved procedure than with previous models.

Recommendation/Instructions:

When swapping mirrors on a vehicle, the first thing that needs to be known is if the vehicle is equipped with door modules or not. The easiest way to determine if the vehicle has door modules is to use the Tech 2 and try to communicate with the "Drivers Door Switch" and "Passenger Door Switch". If the Tech 2 can communicate with these modules then the vehicle is equipped with door modules. If the Tech 2 cannot communicate with the door switches then the vehicle does not have door modules and the wiring between the driver and passenger mirrors is hard wired. The information below will be divided into two different areas: 1. Swapping mirrors on a vehicle equipped with Door Modules, and 2. Swapping mirrors on a vehicle NOT equipped with Door Modules.

Swapping mirrors on a vehicle equipped with Door Modules

The information in this section covers three different mirrors to swap on vehicles equipped with door modules: Base Power (DL8), Power Folding (DL3) and Camper (DPN). Before any parts are installed new door module calibrations must be obtained from Techline Customer Support at 1-800-828-6860. Advise the Techline Consultant that the vehicle is getting different mirrors, provide the RPO of the mirrors being installed, and request a new calibration for both door modules. Also, if switching from DL3 to DPN/DL8 or vise versa new drivers door switch trim bezel will need to be obtained. Once you have the calibrations and correct bezel, then the mirror swap can be done. If the calibration or switch bezel is not available the mirror swap is not possible. Replace the drivers door switch with correct part number for the mirrors being installed from the chart below, programmed both door switches with the new calibrations from Techline and install the new mirrors.

Mirrors Driver Door Switch

DL3 15906881 4-power windows

DPN or DL8 15906880 4-power windows

One additional note to remember when swapping from DL3 to DPN or DL8. If the vehicle is equipped with memory RPO AN3, only the DL3 mirrors have memory recall. So, if the DL3 mirrors are replaced with DPN or DL8 mirrors the curb view assist and memory mirror features will be lost.

Swapping mirrors on a vehicle NOT equipped with Door Modules

This information only covers two different mirrors to swap on vehicles NOT equipped with door modules: Base Power Mirror (DL8) and Camper (DPN).

These two mirrors can be swapped without any additional hardware changes. The only thing to be aware of is that some vehicles equipped with DL8 mirrors may not have the turn signal wiring, due to the DL8 mirror is not equipped with a turn signal indicator. If the DPN mirrors are installed the turn signal indicator may be inoperative unless the turn signal wiring is installed. Please do not contact Partech for a wiring harness, the wires will have to be added.

Note: The Power Folding Mirrors (DL3) are not available and can not be installed on a vehicle not equipped with Door Modules.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

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