GMC Yukon - Popular Questions, Answers, Tips & Manuals

You will need to take it to a parts store like NAPA and see if they will read the tcm (transmission control module) for codes, if all else fails then take it to a transmission shop and ask if they can scan it for codes and check the functionality of the tow haul button if it is not functioning, it could be just a broken wire from flexing at the base of the shifter.

2000 GMC Yukon | 34 views | 0 helpful votes

Check the transmission fluid level with the vehicle idling in park. If you do not see fluid on the dipstick then add one half quart at a time until it is in the hash marks on the dip stick. be sure to let the transmission (DexIII or mercon) completely drain down the dipstick tube or you will get a false reading. Shut off engine to avoid having to warm up the transmission to get an accurate reading and possibly causing (more) damage then may already have been done.

1997 GMC Yukon | 24 views | 0 helpful votes

Driver's side under the car, along the frame.

GMC Yukon Cars &... | 44 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 &... | 359 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 | 353 views | 0 helpful votes

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 &... | 56 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 &... | 442 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 &... | 164 views | 0 helpful votes

Check your e brake and then trany fluid.

2001 GMC Yukon | 59 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 | 65 views | 0 helpful votes

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

GMC Yukon Cars &... | 41 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 &... | 69 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 &... | 27 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 &... | 26 views | 0 helpful votes

Check with a good mechanic.

GMC Yukon Cars &... | 19 views | 0 helpful votes

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