2007 GMC Sierra 2500HD - Answered Questions & Fixed issues

Running wires from external sensors is going to be a difficult job because you have to drop the headliner and the left A post cover for access to the wires. There are manuals available at auto parts stores that have diagrams, but you need to be sure that it covers the wiring for the new mirror.

Could have a DDS an PDS .depends on what RPO code yours has > Outside Mirror Description and Operation (with RPO DL3) Or Outside Mirror Description and Operation (without RPO DL3) Without Heated Outside Rearview Mirror Operation The REAR DEFOG relay controls the operation of the heated outside rearview mirrors. When rear window defogging is requested, the REAR DEFOG relay is energized and B+ is applied to the supply voltage circuit of the mirror heater element, located in the mirror face. A constant ground is also applied to the mirror face. Current will pass through the mirror heater element, warming the mirror, so long as the rear window defogger is commanded ON. With Heated Outside Rearview Mirror The DDS and PDS control the activation of the mirror heaters. Upon receiving a serial data message indicating a request for heated mirrors, the DDS and PDS, will apply voltage to the mirror heater element supply voltage circuit. The mirror heaters will remain active until a new message is received indicating rear defogger is to be deactivated. The power mirror system consists of the following components: • Driver Door Switch (DDS)--An electronic control module with integrated switches and requires programming when replaced • Passenger Door Switch (PDS)--An electronic control module with integrated switches, requires programming when replaced • Power Mirror Direction Switch--Integrated into DDS and is a four position momentary switch that provides a signal input to the DDS for up, down, left/extend and right/retract with a mirror switch activation • Mirror Select Switch--Integrated into DDS and is a three position switch that allows the operator to select the left or right mirror and also a neutral/fold position • Mirror Extend/Retract Switch--Integrated into DDS and is a two position switch that allows the operator to select the mirror extend or mirror retract position • Left Outside Power Mirror--Contains both the vertical and horizontal mirror motors • Right Outside Power Mirror--Contains both the vertical and horizontal mirror motors • Body Control Module--An electronic control module that requires programming when replaced, serves as the power mode master and is the main message handler • Horizontal and Vertical Position Sensors, if equipped with memory mirrors--Supplied a 5-volt and low reference by the DDS/PDS and provide a variable voltage signal to the DDS/PDS that is proportional to mirror position • Folding Mirror Motor, in each of the outside mirrors, if equipped with power fold mirrors--Provides extend and retract movements of the mirror and is serviced as a complete mirror assembly Your best bet mite be to take to a qualified repair shop , i really don't think you'll be able to do anything with it. Do you have wiring diagrams so you know which wires to test ,do you know how to do electrical testing ? The Driver Door Switch (DDS) and Passenger Door Switch (PDS) supply voltage to the outside rearview mirror heater elements upon receipt of a serial data message from the HVAC module indicating that the rear defrost system is active. The door switch supplies B+ through the driver/passenger mirror heating element supply voltage circuit when a request is seen. Ground is applied through the driver/passenger mirror heating low reference circuit.

Get a manual from an auto parts store specific for your vehicle. In it, you'll find exploded parts diagrams and step by step instructions on how to replace those parts

Replace the battery's. Try again.

good chance with the ABS light on . you will need to jack it up and wiggle the tire top and bottom and side to side and look for movement . with bearings as bad as you might have get it repaired NOW and don't drive it anymore until it's fixed.

It sounds like the brakes need some work done. I would suggest talking to a mechanic or a tow company to see if they can help you understand it. Whatever the problem is, I would definitely suggest getting it figured out sooner rather than later. The last thing you need is to have it cause a problem when you're in the middle of towing another vehicle.

Broken wire to speaker thanspeaker will not work. With the number of problems there with GMC Utes suggest you trade it in on a DODGE or FORD

where is the heater and defrost fuse in my 2007 gmc sierra 1500

In the fuel tank

I have a 2005 , 1500 Sierra and had to replace mine a while back. The dealership wanted over $800 CAN for a regular GM exhaust with a one year warranty, got them to look for a Magna-flow stainless steel exhaust with a lifetime warranty for about $650 can (this was from the manifold back) PS IT ALSO HAS A GREAT SOUND!!!

It does not have a user-serviceable fuel filter. In 2004 when GM went to what is called a "returnless" fuel system, they incorporated the fuel filter into the in-tank fuel pump. That means from 2004 to present, the only way to replace the fuel filter is to replace the entire fuel pump.

you have to find out why it's overheat ,trans.pipe bent,cooler restrictions,the pcm know trans.overheat and goes to default modehave code retrieve

you can start with a pound, then watch your low side pressure. keep it around 40 to 42

Remove the outside bezel and then there are about 4 screws holding it in. Unplug the wires after pulling it away from the dash.

is your speedometer working? this combination often happens when the computer doesn't know the vehicle speed. anyway, you need to read codes in your abs system.

Bad fuel pump

What are the codes and what is your question ?

if you need to replace the fuel pump i find it easier to unbolt the bed and get help to slide it back

hi, dear friend, I think this tool is your looking for.

I'm guessing that you have already checked to make sure there is power going to the plow lights. If not use a test light and make sure. The most likely problem is the grounds from the plow lights themselves to the frame. Take the lights apart and check and/or replace the grounds, wires inside the case take a lot of vibration and that can cause them to fail.Don't forget to check the bulbs to be sure they're good too. Hope this helps.