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GMC Yukon Update values.py #3124

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xBJx wants to merge 2 commits intocommaai:masterfrom
xBJx:xBJx-Yukon-carSpecs-update
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GMC Yukon Update values.py #3124
xBJx wants to merge 2 commits intocommaai:masterfrom
xBJx:xBJx-Yukon-carSpecs-update

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@xBJx xBJx commented Feb 13, 2026

Adjusted wheelbase and tirestiffnessFactor to values that have been under test on my 2020 Yukon for about 10 months & 6680+ miles dongle id 2dced94c58d236. Device failed and future routes will be on dongle id a843568dc5f36ae3

Validation

  • Dongle ID: 2dced94c58d236
  • Route: 2dced94c58d1f916/00000026--cd58a439f4/0

I cannot access more recent routes from my original device, but if needed can upload more routes from the new device in a few days

Adjusted wheelbase and tirestiffnessFactor to values that have been under test on my 2020 Yukon for about 10 months  & 6680+ miles dongle id 2dced94c58d236.  Device failed and future routes will be on dongle id a843568dc5f36ae3
@github-actions github-actions bot added car related to opendbc/car/ gm labels Feb 13, 2026
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Thanks for contributing to opendbc! In order for us to review your PR as quickly as possible, check the following:

  • Convert your PR to a draft unless it's ready to review
  • Read the contributing docs
  • Before marking as "ready for review", ensure:
    • the goal is clearly stated in the description
    • all the tests are passing
    • include a route or your device' dongle ID if relevant

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github-actions bot commented Feb 13, 2026

Car behavior report

Replays driving segments through this PR and compares the behavior to master.
Please review any changes carefully to ensure they are expected.

Testing 20 segments for: GMC_ACADIA, GMC_YUKON

⚠️ 10 changed, 10 passed, 0 errors

Show changes

GMC_YUKON - b513af7447934108/00000005--0c6cdeea37/5

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

GMC_YUKON - b513af7447934108/00000007--fc8cb7ced6/4

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

GMC_YUKON - b513af7447934108/00000007--fc8cb7ced6/10

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

GMC_YUKON - b513af7447934108/00000005--0c6cdeea37/6

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

GMC_YUKON - b513af7447934108/00000008--94b1e36dd5/17

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

GMC_YUKON - b513af7447934108/00000008--94b1e36dd5/14

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

GMC_YUKON - b513af7447934108/00000005--0c6cdeea37/8

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

GMC_YUKON - b513af7447934108/00000005--0c6cdeea37/4

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

GMC_YUKON - b513af7447934108/00000008--94b1e36dd5/16

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

GMC_YUKON - b513af7447934108/00000008--94b1e36dd5/18

  carParams.centerToFront (1 diffs)
    frame -1: 1.4700000286102295 -> 1.475000023841858

  carParams.rotationalInertia (1 diffs)
    frame -1: 5324.20166015625 -> 5360.482421875

  carParams.tireStiffnessFactor (1 diffs)
    frame -1: 1.0 -> 0.5

  carParams.tireStiffnessFront (1 diffs)
    frame -1: 287611.65625 -> 143805.828125

  carParams.tireStiffnessRear (1 diffs)
    frame -1: 454655.4375 -> 227327.71875

  carParams.wheelbase (1 diffs)
    frame -1: 2.940000057220459 -> 2.950000047683716

@xBJx xBJx changed the title Update values.py Update values.py for 2020 GMC Yukon Feb 13, 2026
@xBJx xBJx changed the title Update values.py for 2020 GMC Yukon GMC Yukon Update values.py Feb 13, 2026
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