Transmission range sensor?

Tiny
ROGER907
  • MEMBER
  • 2019 GMC YUKON
  • V8
  • 4WD
  • AUTOMATIC
  • 75,000 MILES
My wife’s vehicle listed above XL model won’t start in park. After checking all fuses and troubleshooting I found it starts in neutral every time. I purchased a transmission range sensor from Dormans and its unlike any I see on the internet. Also, I’m having trouble finding videos on this subject on any vehicle this new or GMC’s. Is this an internal part that will require an actual mechanic’s shop to fix?
Wednesday, December 6th, 2023 AT 10:56 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,108 POSTS
Hi,

The switch is internal and a bit of a pain to remove. It requires the removal of the valve body and the internal linkage to the parking paw.

I attached the directions below. Take a look at them and let me know if it is something I can help you with.

Take care,

Joe

See pics below.
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Thursday, December 7th, 2023 AT 8:51 PM

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