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Bryce000

Last reply Jul 23, 2015 · posted in GMC Sierra Forum

Any way to bypass fog lights turning off with high beams?

2008 Denali, the fog lights turn off when the high beams are on. Doesnt make any sense because when you activate your high beams you are looking for maximum light output. Anyways is there a way to bypass the wiring for that perhaps behind the fog light switch or right at the fog light/high beam assembly?
Thanks

19 Replies · 34438 views

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Combatant

Jul 11, 2013

When running 6K HID's the foglights turned on in conjunction with the highbeams seems to make a difference, especially on dark highways with steep ditches. The fogs tend to spread out into the ditches more.

toddbailey

Jul 11, 2013

The oem fog light aren't a legal issue and they are very low and only illuminate a very narrow section of the road way.

Any one know where I can get a free schematic for a 2000 envoy?

stevenLE

Feb 12, 2014

How I bypassed fog light turning off with high beams

I have a 2001 GMC Sierra and had the same issue. On the original setup from GM, the fog lights come on with the park lights and with the low beams. When switched to high beams the fog lights turn off. the reason this happens is the high beams use an independent ground to the low beam therefore you loose the ground side of your fog light relay trigger. You can simply run a wire from terminal 86 of your fog light relay to a toggle switch to ground. Turn on your headlights on low beam and push the OEM button for the fog lights. When you turn on your high beams, flip the toggle switch and your fog lights will come on with your high beams. I just got this going on my GMC Sierra and will run a nice toggle next to my headlight switch. I am going to use an illuminated toggle so I can tell when I leave the switch on.

Combatant

Mar 23, 2014

I installed HID lights in Low, High and Fog so,I wanted to have the fogs stay on with the HI beam. With the HID lights the fogs really do make a difference, so for the fix I wired in a simple relay to combat this problem.

R.SIMONETTI

Jul 23, 2015

bypassing auto shut off of driving lights when brights are activated

GM uses a switched ground, even when you hit your brights your low beams shut off, if you ground the negative wire on the lights they will not shut off with bright light activation, same goes with driving lights, try grounding the negative side and they should work. be sure you do not ground the wire going to the switch, cut and seperate the ground wire and ground the light side.

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Basshunter

Last reply Sunday at 5:29 PM · posted in GMC Canyon Forum

2017 canyon all terrain diesel

Hello. 5 years old without any problems. Now the radio changes channel when ever it wants to. Getting very annoying. Any ideas what to do with it ?

1 Replies · 468 views

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TERRY GARBIG

Sunday at 5:29 PM

I GOT THE SAME PROBLEM.HAD THE RADIO REPLACED UNDER WARRENTY BUT NOW ITS DOING IT AGAIN( OUT OF WARRENTY

Campo48

Jun 26, 2026 · posted in GMC Canyon Forum

Brake control

I have a 2015 Canyon. Has anyone installed a trailer brake control. I have a connection cable and need to know where it plugs in under the dash

0 Replies · 8 views

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FamvanWork

Jun 24, 2026 · posted in GMC Savana Forum

05 savana suspension upgrade

Looking to upgrade the suspension on my 05 gmc savana 3500 extended. Any suggestions

0 Replies · 7 views

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Alec

Jun 24, 2026 · posted in GMC Suburban Forum

1999 k1500 lighting/wiring issue

Hello, hive! I have a 1999 GMC K1500 Suburban. When I step on the brake pedal, no keys in switch, the dash and marker lights come on. When headlights are off, driving normally, both turn signals work normally, but the dash and marker lights flash with right turn signal. When headlights are on, left signaL works normally, but right signal buzzes a little at the relay, but does not blink, even though the rear lamp does light on the right side. I am at a loss. So is my mechanic. Help??

0 Replies · 11 views

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hipkts2019

Last reply Jun 23, 2026 · posted in GMC Acadia Forum

2021 denali

Adaptive ride control has stopped working. Is there a simple fix?

1 Replies · 20 views

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hipkts2019

Jun 23, 2026

My 2021 denali with adaptive ride control does not seem to be "adapting". What is the fix?

Squiggy505

Last reply Jun 18, 2026 · posted in GMC Vandura Forum

Location of ECM on a 1991 Vandura 2500

I have a 1991 2500 Vandura conversion van(Glaval) and I'm trying to find the Engine Control Module(ECM). Anyone have any ideas?

2 Replies · 4163 views

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JamesFigura

Feb 3, 2026

Check under the drivers seat

HappyVandura

Jun 18, 2026

Squiggy505 said:
I have a 1991 2500 Vandura conversion van(Glaval) and I'm trying to find the Engine Control Module(ECM). Anyone have any ideas?

06/18/2026
How did all that work out?
I'm wondering about your preferred PSI for tires.
My mechanic recommended 32 psi for my heavily-loaded 1990 Vandura.
That's what I've used for years (once it was around 36-38, and that felt like I was on rollerblades and could not sense the road . . . ), yet I see videos saying that 32 is way too low and damages tires . . .

(I got 11-12 years out of my tires at 32 psi.)

Thank you for any helpful feedback!

Mark Staffanou

Jun 18, 2026 · posted in GMC Sierra Forum

seat bottom to seat frame locating clips

I'm replacing a lower seat foam and leather. The lower foam is attached to a smaller metal frame and is then bolted to the main seat frame. At the rear of the foam/smaller frame there are 2 locating pins that must fit into holes at the rear of the lower seat before the 2 front screws line up with the holes to put screws in. I' not sure what to call them but I need at least 1, 2 would be better, help please.

0 Replies · 39 views

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Luisf

Jun 17, 2026 · posted in GMC Sierra Forum

a 2022 gmc sierra 3.0 diesel press the start/shut off button and the motor stays on

a 2022 GMC Sierra 3.0 diesel, press the start/shut off button, and the motor stays on

0 Replies · 32 views

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Mdoherty770

Jun 12, 2026 · posted in GMC Sierra Forum

AFM/DFM Disabler

"I've come across quite a few articles about lifter damage lately. I assume much of it is marketing hype, but I suspect there’s some truth to it in certain cases. Any thoughts or real-world experiences?"