GMC Yukon - Popular Questions, Answers, Tips & Manuals

How do you know they need to be replaced ? The switches incorporate a electronic module . Driver door module .
Power Window System Components
The power window system consists of the following components:
• Driver Door Module (DDM)
• Passenger Door Module (PDM)
• Body Control Module (BCM)
• RR power window switch
• Window up and window down relays in each of the rear passenger window switches
• Window lockout switch
• Reversible power window motors in each of the doors (circuit breaker protected)
• LT DOOR CB 25A (System power for left windows)
• RT DOOR CB 25A (System power for right windows)

Power Window System Controls
The power window system will operate anytime the Retained Accessory Power (RAP) system is active or when the ignition switch is in the ACCY or ON position.
The DDM contains four power window switches which are integral components. Closing any of the normally open, rocker type switches provides the DDM with a request for power window operation. The switches for the two front windows have three positions UP, Down and Express Down, while the switches for the rear windows have only two positions, UP and Down. Each of these switches and their positions is a direct input into the DDM. Upon receiving a request for power window operation, the DDM, transmits a Class 2 message indicating the switch and it's changed position.
The PDM contains a single power window switch that is an integral component. Closing of this normally open, rocker switch provides the PDM with a request for the front passenger power window operation. The switch for the front passenger window has two positions Up and Down. Each of these switch positions is a direct input to the PDM.
The two rear passenger doors have there own switches. Each of the switches contain a power window up and down relay. A switch activation alone can control the up and down functions of the rear windows. However the BCM, upon receiving a Class 2 message from the DDM, can control the set of relays which will activate the rear window motors.

The door locks operate the same way .

Door Lock System Components
The power door lock system consists of the following components:
• The driver door module (DDM)
• The passenger door module (PDM)
• The body control module (BCM)
• The driver information center (DIC)
• The rear door lock switch
• The door lock relay
• The door unlock relay
• The liftgate lock relay--utility vehicles with liftgate only
• The reversible door lock actuators in each of the doors and liftgate
• LOCKS 20A fuse (rear lock/unlock relay supply voltage)
• ECC 10A fuse (liftgate lock relay supply voltage)

What's not working ? Windows , power locks ?
Hooking up a professional type scan tool ,not a code reader . Code reader can not read codes in the BCM or door modules . Do you know what a DTC is ? diagnostic trouble code >All these can set for door electronic problems .
DTC B1023
DTC B1544, B1600, or B1605
DTC B1580, B1590, B1610, or B1620
DTC B1640 or B1645
DTC B1722
DTC B3808
DTC B3809
DTC B3819
DTC B3820
DTC B3821
DTC B3822
DTC B3823
DTC B3824

GMC Yukon Cars &... | 25 views | 0 helpful votes

The button is located on the driver's side door window control panel. It is below them on the arm rest. See this video:

2015 GMC Yukon | 47 views | 0 helpful votes

Is the dash light dimmer control turned all the way to off?

GMC Yukon Cars &... | 29 views | 0 helpful votes

No such code's for your vehicle , cheap code reader ,.Take it to a qualified repair shop that has a professional scan tool . These are the correct code's for OBD2

GMC Yukon Cars &... | 32 views | 0 helpful votes

Instrument Panel Fuse Block (Right) The right instrument panel fuse block access door is on the passenger side edge of the instrument panel.

Fuse 21 - Sunroof
Fuse 29 - Radio

See pg 294/5

Not sure where the DVD player gets power if not w/ sunroof.

GMC Yukon Cars &... | 33 views | 0 helpful votes

Check your e brake and then trany fluid.

2001 GMC Yukon | 28 views | 0 helpful votes

The clutch in the torque converter could be slipping causing excessive heat. What is the transmission fluid temp?

GMC Yukon Cars &... | 42 views | 0 helpful votes

Check light bulbs. They can be taken out with the holder from behind the bumper. They are ion the same fuse as the running lights so if they work, the fuse will be good.

GMC Yukon Cars &... | 20 views | 0 helpful votes

a repair shop NEAR you. If it is smoking and has overheated you HAVE a damaged engine. The more it is driven the worse it will be. Really you should probably get it towed to a shop. Most repair shops can work on it, all of them are going to make some $ off this, as probably minimally a blown head gasket, but likely rod or piston damage. Make sure the coolant is full before you try and drive it anywhere. treat it gently... maybe it will get to the shop under it's own steam if it is close. The only next step is engine seizure... and new engine time. (rebuilt dropped in might be $2000 if you're super lucky)

2007 GMC Yukon | 26 views | 0 helpful votes

u will find a lot of wiring diagrams and circuit diagrams help books and stuff like this at reliable-store
the girl in the chat box can help u instantly... im a frequent buyer there since Im a mechanic so take help from there

GMC Yukon Cars &... | 44 views | 0 helpful votes

Sounds like you need to replace all the spark plugs and dont foget to properly set the gap of the plug. Dont over tighten the spark plug. About a 1/4turn after contacting the head should be good for proper torque.It might even pay off to have a compression test done when the spark plugs are out.
Do these things before going further on your repair. Please let me know how things work out.

GMC Yukon Cars &... | 22 views | 0 helpful votes

Check with a good mechanic.

GMC Yukon Cars &... | 17 views | 0 helpful votes

Run a hydrometer test on the battery to see if you have a bad battery cell.

GMC Yukon Cars &... | 61 views | 0 helpful votes

No it's not the orifice tube. Temp . actuator , electrical motor that switches door inside rear HVAC system from heat to A/C . stuck on A/C . Rear auxiliary heat and actuator overview repair for Yukon Tahoe Suburban...

GMC Yukon Cars &... | 198 views | 0 helpful votes

If it has always been this way look for wires that at one time were switched. If it is now just happening one of the brake light bulbs may have a bad ground connection causing the electrical system to back feed. Pull out the brake light bulbs and check to make sure that there is no corrosion on the bulb or in the bulb connector. Also, if you pull a trailer or have the wire connections for a trailer you may have a wire problem there.

GMC Yukon Cars &... | 20 views | 0 helpful votes

Yukon what ? just a plain yukon ? 2WD or 4WD XL - Denali etc...
No pulse board . controlled by the BCM - body control module . Taking the vehicle to a qualified repair would be your best bet .
Windshield Wipers
The windshield wiper/washer switch signal circuits are inputs to the body control module (BCM) and the BCM controls wiper motor low speed operation, washer pump and high speed operation. The windshield wiper/washer switch is provided a low reference from the BCM and each of the switch signal circuits is supplied 12 volts through a resistor and monitored within the BCM. During LOW or INTERMITTENT operation the wiper switch low signal circuit is closed to the low reference circuit through a series of resistors within the switch assembly and the signal circuit voltage monitored by the BCM will depend on the switch contact location to the resistor assembly. During HIGH or WASH operation the high and wash switch signal circuits are closed directly to the low reference circuit within the switch assembly and nearly all the signal circuit voltage will be dropped across the BCM resistors. The BCM controls the wiper motor through the Wiper Relay and the Wiper High Relay. During any wiper motor function that uses low speed the BCM supplies the voltage to energize the Wiper Relay and battery voltage will be supplied from the Wiper Relay through the de-energized Wiper High Relay to the wiper motor low speed control circuit. During high speed wiper motor operation the Wiper Relay is energized as in low speed and the BCM provides a ground to energize the Wiper High Relay and the battery voltage is supplied to the wiper motor high speed control circuit. Wiper motor park operation is controlled by the BCM using an input from the park switch within the wiper motor assembly. The BCM supplies the park switch signal circuit 12 volts through a resistor then monitors the circuit. Whenever the wiper motor is out of the park position the park switch signal circuit is closed to ground and nearly all the signal circuit voltage will be dropped across the BCM resistor. When the wiper switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the BCM will continue to operate the motor until the wipers reach the park position. If the ignition is turned OFF while the wipers are in mid-cycle, the wipers will stop immediately where they are and the BCM will park the wipers the next time the ignition is cycled ON.

GMC Yukon Cars &... | 78 views | 1 helpful votes

The reduced power message to a protection program that the ECU activates when certain engine and transmission issues are detected. The engine light should be on and OBD2 codes will be stored. You need a code reader to find these codes and their meanings. Please borrow or buy this tool and write back. Also what do you mean the starting system is locked out? I don't know if you are writing about the antitheft system, shift interlock or a bad starter.

GMC Yukon Cars &... | 32 views | 0 helpful votes

Remove the door panel and if it is screwed to the door frame, unscrew it. If it is riveted to the door frame, drill the rivets and bolt on the new one.

1999 GMC Yukon | 26 views | 0 helpful votes

Hi. The sunroof glass is attached to two rails. You will need to open the sunroof completely and from the outside of the vehicle, look down at the rails. From your symptoms it sounds like it is "Out of Time". Look closely at the rails. I suspect either wear and tear or debris jammed up the components that guide the glass over and down into its closed position. If it doesn't make sense when you look at it. You can write back and explain what you have found or send it in for inspection. If the shop or dealer recommends replacing it, sit down first. Ya they are not cheep. Good Luck.

GMC Yukon Cars &... | 35 views | 1 helpful votes

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