iFixit - Answers With Device "GMC"

1999-2007 GMC Sierra: What causes all the clusters in a dash not to work and fuse is not blo

Sun, 19 Apr 2026 15:16:42 -0700

What is my gauges and my speedometer not working the truck and you can't start it by the key you have to pop the hood and start by solenoid

⟐ Answered Nisan 19, 2026 at 15:16 GMT-7

2006-2014 GMC Yukon: 2007 Yukon 1500XL Engine Light

Sat, 18 Apr 2026 14:54:19 -0700

2007 GMC Yukon Denali 1500XL AWD
6.2L V8
187k miles

Been having some engine issues.
Replaced all 8 spark plugs, wires, coils.

Now at idle, no significant shaking.
Fuel System 1 and 2 status move to OL-Fault after a minute or so
Then traction control and stability lights come on
Followed by flashing check engine - P0300 multiple misfires

Check each cylinder report - 0 misfires on all

Get the RPMs to 2000 and the Fuel status 1 and 2 both go to CL.
The engine light goes away
The traction and stability lights go away

Drives fine. No noticeable issues other than the beeping an annoying flashing lights.

Issue seems to be air intake or fuel mix or sensors.

Short term fuel trim stays at 0.0% until the RPMs are up. Open loop fault?

O2 sensors seem sluggish - move between 0.9v and 0.2v.

MAF 0.78 to 0.83 pounds/min at idle
MAF 2.5 pounds/min at 2000 RPM

All the problems are at idle. I cleaned the throttle body, added fuel, did a battery reset. What else?

I threw all this into AI and it says I need to replace the front two O2 sensors. But what do humans think?

GMC: Changing out a crankshaft sensor

Wed, 15 Apr 2026 14:51:39 -0700

How do I replace the crankshaft sensor on my 2018 GMC canyon

⟐ Commented Nisan 15, 2026 at 14:51 GMT-7

2014-Present GMC Sierra: stuck in 4 wheel drive

Sat, 11 Apr 2026 18:29:28 -0700

My truck is stuck in 4 wheel drive how can I fix this?

1988-1998 GMC Pickup: Transmission will not change gears

Thu, 09 Apr 2026 14:35:18 -0700

Transmission will not change gears

⟐ Commented Nisan 09, 2026 at 14:35 GMT-7

1999-2007 GMC Sierra: Cruise control not working, 2006 Duramax

Wed, 08 Apr 2026 00:14:58 -0700

Cruise control not working,,what can I check ?

On a 2006 Duramax,,

⟐ Commented Nisan 08, 2026 at 0:14 GMT-7

2015-Present GMC Yukon: How to replace switch on driver side seat on a 2016 Yukon

Thu, 02 Apr 2026 08:03:49 -0700

How to replace the switch on the driver side seat

⟐ Marked as duplicate Nisan 02, 2026 at 8:03 GMT-7

GMC: How to replace the power switch on a driver side seat

Thu, 02 Apr 2026 08:03:49 -0700

The seat adjustment, Control how do you replace it?

⟐ Marked as duplicate Nisan 02, 2026 at 8:03 GMT-7

2014-Present GMC Sierra: 2018 Denali window controls not working

Tue, 24 Mar 2026 19:30:14 -0700

Drivers door switches wont control window functions on passenger and rear windows but operate drivers front window. Also mirror controls dont work

1999-2007 GMC Sierra: Why is hot air being forced out of defrosters when a/c is turned on?

Sun, 15 Mar 2026 20:27:25 -0700

Driver's side and rear has cold air but passenger side is hot air. and the defrosters are blowing out hot air even when the settings for windshield are off.

⟐ Commented Mart 15, 2026 at 20:27 GMT-7

2006-2014 GMC Yukon: How do I fix my driver side retractable mirror? Motor runs but doesn’

Sun, 15 Mar 2026 01:17:57 -0700

Driver side retractable mirror does not work. Motor is working but no retraction.

⟐ Commented Mart 15, 2026 at 1:17 GMT-7

2000-2006 GMC Yukon: brake pedal falls to floor

Sat, 14 Mar 2026 16:05:18 -0700

I have a 2003 Yukon denali. I have replaced front hub assemblies on both sides. both front calipers, hoses, rotors and pads. and also drivers side rear caliper. also replaced master cylinder. manually and electronically bled the brake system 10 or more times. if stitting at a traffic light after about 10 seconds the brake pedal falls to the floor slowly and the truck starts moving forward. what can cause this?

⟐ Commented Mart 14, 2026 at 16:05 GMT-7

2015-Present GMC Yukon: Driver side mirror does not retract.

Sun, 15 Mar 2026 01:15:54 -0700

Driver side mirror does not retract?

⟐ Marked as duplicate Mart 15, 2026 at 1:15 GMT-7

2000-2006 GMC Yukon: Why does my battery go dead sometimes and sometimes it dont

Fri, 13 Mar 2026 06:04:09 -0700

Some days when I go to start it the battery is dead and sometimes just 1 hour the battery is dead what is causing this

⟐ Answered Mart 13, 2026 at 6:04 GMT-7

2000-2006 GMC Yukon: Y is my rpm in keep going high n I lose pressure

Thu, 12 Mar 2026 17:57:28 -0700

Y is my rpm going high

⟐ Commented Mart 12, 2026 at 17:57 GMT-7

1988-1998 GMC Pickup: ABS cluster light is on, on my 98 gmc sierra 1500

Thu, 12 Mar 2026 13:13:19 -0700

My abs light in cluster turned on all of a sudden?

⟐ Commented Mart 12, 2026 at 13:13 GMT-7

1999-2007 GMC Sierra: What gmc truck has interchangeable parts with my 2002 gmc sierra 1500?

Sat, 07 Mar 2026 21:26:21 -0700

What parts and frame on my 2004 Chevy tahoe fit my 2002 gmc.Sierra 1500 ?

⟐ Answered Mart 07, 2026 at 21:26 GMT-7

2007-2014 GMC Sierra: Transfer case stuck n neutral

Thu, 26 Feb 2026 00:23:25 -0700

Was driving stoped and truck would not move get it home screw around with 4×4 switch (knob),and it goes back into 2 wheel drive drive for 2 months, need 4 wheel have snow won't go into 4 wheel goes into auto but front wheels won't spin won't go into 2 so I drive it as is goes and yesterday day stop won't go go to put in park and it's like it's still moving and makes that grind so 30 min ago I take off the little electric motor and spin this gear,counter clock wise untill stops kinda move back drive shaft front ( trucks in neutral ) put that electric piece back in fire it up and it makes a snap,bang,clunk,but it movesso I step on gas and it shifts one time slow as hell like I am 4 low and almost like it's slipping but not put in reverse and bang but drives actually a little faster than forward

1999-2007 GMC Sierra: 2001 4.8L V8 crank/ no start

Tue, 24 Feb 2026 09:30:16 -0700

The truck has been sitting for 2 years. I have replaced the fuel, fuel pump and fuel filter. Still no start. Plugs have spark and there is pressure on the fuel rail. Any idea what may be wrong?

2000-2006 GMC Yukon: Location of radio amplifier?

Fri, 06 Feb 2026 09:06:29 -0700

My amp keeps cutting out, shuting off the sound. The radio keeps working.

⟐ Commented Şubat 06, 2026 at 9:06 GMT-7