Question about GMC Yukon XL

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Yukon xl 2002 Engine was replaced with '05. When headlamps are turned on, instrument panels lights and radio lights turn off.

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You may have the dimmer switch adjustment down, this is the switch that controls the brightness or dimmness of the lights make sure its turned up and if it is then you may have a bad dimmer switch which is sometimes no part of the headlight switch, it may be a seperate switch, this is where i would start good luck and i hope this is helpful.

Posted on Jan 01, 2011

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Posted on Jan 02, 2017

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2005 cavalier dash lights not working. all fuses are goood. replaced cluster, dimmer switch, multifunction switch


Back lighting or warning lights ? check engine , ABS , air bags , seat belt , oil light etc... ?
Interior Lamps Dimming
The second group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination and incandescent lamps.
• Power window switches
• HVAC control head assembly
• Radio
• The instrument panel cluster (IPC)
When the ignition switch is turned to the ON position, the vacuum fluorescent (VF) display (radio) turns on at maximum brightness. When the park lamps are ON all incandescent back lighting turn ON at the dimming level indicated by the IP dimmer switch. At the same time all vacuum fluorescent (VF) displays dim to match the indicated dimming level. When the headlamp switch is placed in the PARK position, the park lamp supply voltage circuit provides an input to the body control module (BCM). The BCM then supplies voltage to the instrument panel dimmer switch through the instrument panel dimming lamps control circuit. The setting of the instrument panel dimmer switch determines the amount of voltage that the instrument panel dimmer switch supplies to the BCM through the instrument panel dimming lamps low reference circuit. The BCM then sends a pulse width modulated (PWM) voltage to all the interior lamps. All the vacuum florescent (VF) and incandescent back lighting lamps are provided a specific voltage and are then grounded. When the headlight switch is turned to the PARK or HEADLAMP position, all incandescent back lighting turn on at the dimming level indicated by the IP dimmer switch. When the IP dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from Minimum intensity to maximum brightness in response to the IP dimmer switch.

I would have it checked for DTC'S - diagnostic trouble codes stored in the BCM !
DTC B2624 Display Dimming Input Range/Performance
The body control module (BCM) supplies voltage to the instrument panel dimmer switch through the instrument panel dimmer switch signal circuit. The dimmer switch varies the voltage and returns the new voltage to the BCM through the dimmer switch signal return circuit. The BCM uses this voltage to determine the illumination level of the instrument panel lamps.

DTC B2625 Display Dimming Pulse Width Modulation (PWM) Output Circuit Range/Performance
The body control module (BCM) receives a variable voltage from the instrument panel (I/P) lamp dimmer switch. The BCM uses this signal in order to vary the illumination level of the I/P lamps. The I/P dimming lamps output from the BCM is a pulse width modulated voltage supply used to light the I/P lamps. If a malfunction occurs in the I/P dimming lamps output circuit, this DTC is set.

DTC B2662 Park Lamp Switch Circuit Malfunction
The park lamps are controlled by the turn/headlamp switch. Positive battery voltage is supplied to the switch through the EXT LP fuse. When the turn/headlamp switch is placed in the park or head position, battery voltage is supplied to the park lamps. The body control module (BCM) is also connected to the park lamp circuit to sense whether or not the park lamps turn ON when the low beam or high beam headlamps are turned ON. The BCM also uses the parklamp battery positive voltage to power the instrument panel (I/P) dimmer output circuit. If the BCM senses that the low beam or high beam headlamps are ON and the park lamp input is not active, DTC B2662 sets.
Do the park lamps work ?

Jun 11, 2017 | Cars & Trucks

1 Answer

Why do the instrument panel lights turn off when I turn on the headlamps?


Head light switch controls the brightness of the dash lights. Looks like it's the problem.

Aug 27, 2014 | 2002 GMC Yukon Denali

1 Answer

2002 gmc yukon xl....dash lights dont work when you turn on headlights


change your internal dash bulb ,,it is behind your dash panel ,,should be easy to get to ..if that does not work have autozone read your electrical free and they will save you the headache

Oct 23, 2013 | 2002 GMC Yukon XL

1 Answer

2003 gmc yukon xl won't turn over- new battery


It sounds like you have a bad connection on the battery. Make sure to clean the connections, make sure they are tight, and make sure the ground cable has a good connection at both ends, battery side and body/frame side. The bad connection is the only answer when the battery is fully charged and you turn the key and it all goes out. If you can turn on your headlights and press the brake at the same time, and they work, then it may be something else, but I would be amazed if they do work given your description of your problem.

So, make sure the battery is charged and clean and tighten all your connections. Test battery connection by putting it under a load with all the lights, head, and brake at the same time. If it goes off then, redo cables again.

Good luck.

Jan 08, 2018 | 2003 GMC Yukon XL

1 Answer

Where is the cruise control fuse for a 2002 yukon xl 2500


Cruise control fuse is 10 Amp, located in the interior - left side of the instrument panel (dashboard).
An automotive 10 Amp fuse will be red in color.

Jan 17, 2011 | 2002 GMC Yukon XL

1 Answer

Intermittent instrument cluster lights, 2002 Yukon XL


Hello frumento, Your are describing an advance cluster failure. I have repaired many GM instrument clusters and see your issue come to my shop on a regular basics.
Please visit my website for complete repair information. www.kincerservice.com
Thanks Mike

Dec 10, 2009 | 2002 GMC Yukon XL

1 Answer

Dash and shifter lights in 1996 jeep cherokee wont light


Hello and welcome to FixYa . Locate the dial that controls the brightness of the dashboardlights. If the control is not immediately evident. Make sure the brightness control is turned on. If it is and the lights aren't working, the problem may be a bad fuse. Check the fuse that controls the dashboard lights Replace the fuse if necessary. If just one part of the instrument panel is not lighting up, then you have either a burned-out bulb or a wiring problem.

Passenger side kick panel fuse breakdown for a 1996 jeep Cherokee Country

01 - 25A Rear Wiper/Washer
02 - 15A Radio, Cigar Lighter
03 - Empty
04 - 15A Passing Light
05 - 30A Blower Motor
06 - 30A (Circuit Breaker) Power Windows
07 - 02A ABS
08 - 20A Turn Signal Flasher
09 - 10A Radio/Clock Memory, Courtesy Lights, Glove Box, Cargo, Dome Lights, Telltales
10 - Empty
11 - 25A Headlamp Delay Module, Horn
12 - Empty
13 - 20A Power Door Locks
14 - Empty
15 - 15A Instrument Panel Lamps, Clock/Radio and Memory, Headlamp Switch, Parking Lamps
16 - 30A (Circuit Breaker) Power Seats, Trailer Tow
17 - 7.5A Instrument Cluster Gauges, Headlamp Delay Module, Chime Module, Overhead Console
18 - 25A Rear Defrost
19 - 05A Instrument Panel Lamps, Radio Illumination
20 - 5.5A (Circuit Breaker) Windshield Wipers and Washers

This should get you going. And you can always Ask Me.

Apr 27, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Gmc yukon XL cabin lights do not working with the doors open.


This is related to the body control module, take it to the dealer and have it function tested.

Oct 17, 2008 | 2002 GMC Yukon XL

1 Answer

2002 yukon xl no power check engine light


FROM: LustyKid

Denalis are famous for clogged fuel filters. Change the fuel filter first and see what happens, Get the code for the check engine light. It could be you have a clogged EGR ports. Remove EGR valve and clean out the ports, replace with new gasket and see what happens. Advise of results.

Sep 03, 2008 | 2002 GMC Yukon XL

1 Answer

2002 Yukon XL - No Headlights


Check the headlight fuses in the engine fuse box compartment. Not sure if the lights have relays, but they will be clearly mark in the inside of the top cover for location.

Aug 23, 2008 | 2002 GMC Yukon XL

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