Can't get rear parking brake off 04 Yukon Denali XL

You don't say a pinout of WHAT?

https://www.google.com/search?q=pinout+diagram+E38

Denali Radio?

GMC Yukon Denali 2014 - SYSTEM WIRING DIAGRAMS

https://portal-diagnostov.com > 2020/04/13 > radio-gm...

Apr 13, 2020 - RADIO - GMC Yukon Denali 2014 - SYSTEM WIRING DIAGRAMS Dual DVD Headrest Wiring Diagram. Get Access all wiring diagrams car. Radio Wiring ...

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  All Wiring Diagrams for GMC Yukon Denali 2014

  https://portal-diagnostov.com > 2020/07/22 > all-wiring...
  
  Jul 22, 2020 - All Wiring Diagrams for GMC Yukon Denali 2014 · AIR CONDITIONING · ANTI-LOCK BRAKES · ANTI-THEFT · BODY CONTROL MODULES · COMPUTER DATA LINES.

GMC Yukon XL pinouts - PinoutGuide.com

https://pinoutguide.com > dev > GMC > Yukon+XL
Here are pinouts for GMC Yukon XL devices. ... There are 6 pinouts found for GMC Yukon XL . The pinout (pin-out) ... The pin outs diagrams are listed below.

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If front park lights are working highly unlikely headlight switch is the issue. Is the vehicle equipped with a trailer towing package and wiring to the rear? I would start there. This vehicle may also have a taillight module located under the vehicle on the passenger rear attached in the wheel well area that goes bad

Of course they should have checked the parking brakes too. On the Yukon XL, the parking brakes are brake shoes that operate inside of a drum that is molded to the interior side of the rear disc brake rotors. I would take it back to the shop and voice my frustration if I were you and tell them that you feel they should do the parking brakes at no charge for your time and aggravation. They were right there to replace them if they re-surfaced your rotors anyway!

I have a F-350 with the same type setup. I think it is more likely the cables have stretched some. Also, my Ford has an adjustment wheel (like regular drum brakes) so you should be able to adjust them to take up some or all of that slack. And last, the shoes for my Ford (aftermarket) are $27 (for BOTH sides). The dealer is out to make a nice profit.

after the calipers and brackets are off, the parking brake shoe may be holding it on. if it is,try to loosen the parking brake adjustment if you can get to it, if not, just pry the rotor off, if it has a big lip on it, it will need rotors and parking brake shoes anyhow.

Here's a link to a thorough article on the subject which should help you...

http://www.aa1car.com/library/abs_bleeding.htm

GM has an issue with dash clusters since 2002 and the company will not admit to it. We pay $250 each time to swap out the clusters. Let me know what city you are in and I will find you a company locally that replaces clusters.

if you say oil that oil seel dameg bat you saygrease ned to cleen up and boot new grease heet brpof dont replased whit reglar grease .abujabal yousef