diff --git a/docs/CARS.md b/docs/CARS.md
index a7eb0a120b..eb7f88d731 100644
--- a/docs/CARS.md
+++ b/docs/CARS.md
@@ -21,10 +21,10 @@ A supported vehicle is one that just works when you install a comma device. All
 |Cadillac|Escalade 2017[<sup>4</sup>](#footnotes)|Driver Assist Package|openpilot|0 mph|7 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 OBD-II connector<br>- 1 comma 3X<br>- 2 long OBD-C cable<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Cadillac&model=Escalade 2017">Buy Here</a></sub></details>||
 |Cadillac|Escalade ESV 2016[<sup>4</sup>](#footnotes)|Adaptive Cruise Control (ACC) & LKAS|openpilot|0 mph|7 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 OBD-II connector<br>- 1 comma 3X<br>- 2 long OBD-C cable<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Cadillac&model=Escalade ESV 2016">Buy Here</a></sub></details>||
 |Cadillac|Escalade ESV 2019[<sup>4</sup>](#footnotes)|Adaptive Cruise Control (ACC) & LKAS|openpilot|0 mph|7 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 OBD-II connector<br>- 1 comma 3X<br>- 2 long OBD-C cable<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Cadillac&model=Escalade ESV 2019">Buy Here</a></sub></details>||
-|Chevrolet|Bolt EUV 2022-23|Premier or Premier Redline Trim without Super Cruise Package|openpilot available[<sup>1</sup>](#footnotes)|3 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chevrolet&model=Bolt EUV 2022-23">Buy Here</a></sub></details>|<a href="https://youtu.be/xvwzGMUA210" target="_blank"><img height="18px" src="assets/icon-youtube.svg"></img></a>|
-|Chevrolet|Bolt EV 2022-23|2LT Trim with Adaptive Cruise Control Package|openpilot available[<sup>1</sup>](#footnotes)|3 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chevrolet&model=Bolt EV 2022-23">Buy Here</a></sub></details>||
-|Chevrolet|Silverado 1500 2020-21|Safety Package II|openpilot available[<sup>1</sup>](#footnotes)|0 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chevrolet&model=Silverado 1500 2020-21">Buy Here</a></sub></details>||
-|Chevrolet|Trailblazer 2021-22|Adaptive Cruise Control (ACC)|openpilot available[<sup>1</sup>](#footnotes)|3 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chevrolet&model=Trailblazer 2021-22">Buy Here</a></sub></details>||
+|Chevrolet|Bolt EUV 2022-23|Premier or Premier Redline Trim without Super Cruise Package|openpilot available[<sup>1</sup>](#footnotes)|3 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 comma 3X<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chevrolet&model=Bolt EUV 2022-23">Buy Here</a></sub></details>|<a href="https://youtu.be/xvwzGMUA210" target="_blank"><img height="18px" src="assets/icon-youtube.svg"></img></a>|
+|Chevrolet|Bolt EV 2022-23|2LT Trim with Adaptive Cruise Control Package|openpilot available[<sup>1</sup>](#footnotes)|3 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 comma 3X<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chevrolet&model=Bolt EV 2022-23">Buy Here</a></sub></details>||
+|Chevrolet|Silverado 1500 2020-21|Safety Package II|openpilot available[<sup>1</sup>](#footnotes)|0 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 comma 3X<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chevrolet&model=Silverado 1500 2020-21">Buy Here</a></sub></details>||
+|Chevrolet|Trailblazer 2021-22|Adaptive Cruise Control (ACC)|openpilot available[<sup>1</sup>](#footnotes)|3 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 comma 3X<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chevrolet&model=Trailblazer 2021-22">Buy Here</a></sub></details>||
 |Chevrolet|Volt 2017-18[<sup>4</sup>](#footnotes)|Adaptive Cruise Control (ACC)|openpilot|0 mph|7 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 OBD-II connector<br>- 1 comma 3X<br>- 2 long OBD-C cable<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chevrolet&model=Volt 2017-18">Buy Here</a></sub></details>|<a href="https://youtu.be/QeMCN_4TFfQ" target="_blank"><img height="18px" src="assets/icon-youtube.svg"></img></a>|
 |Chrysler|Pacifica 2017-18|Adaptive Cruise Control (ACC)|Stock|0 mph|9 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-full.svg)](##)|<details><summary>Parts</summary><sub>- 1 FCA connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chrysler&model=Pacifica 2017-18">Buy Here</a></sub></details>||
 |Chrysler|Pacifica 2019-20|Adaptive Cruise Control (ACC)|Stock|0 mph|39 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-full.svg)](##)|<details><summary>Parts</summary><sub>- 1 FCA connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Chrysler&model=Pacifica 2019-20">Buy Here</a></sub></details>||
@@ -50,7 +50,7 @@ A supported vehicle is one that just works when you install a comma device. All
 |Genesis|GV70 (3.5T Trim) 2022-23[<sup>6</sup>](#footnotes)|All|Stock|0 mph|0 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-full.svg)](##)|<details><summary>Parts</summary><sub>- 1 Hyundai M connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Genesis&model=GV70 (3.5T Trim) 2022-23">Buy Here</a></sub></details>||
 |Genesis|GV80 2023[<sup>6</sup>](#footnotes)|All|Stock|0 mph|0 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-full.svg)](##)|<details><summary>Parts</summary><sub>- 1 Hyundai M connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Genesis&model=GV80 2023">Buy Here</a></sub></details>||
 |GMC|Acadia 2018[<sup>4</sup>](#footnotes)|Adaptive Cruise Control (ACC)|openpilot|0 mph|7 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 OBD-II connector<br>- 1 comma 3X<br>- 2 long OBD-C cable<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=GMC&model=Acadia 2018">Buy Here</a></sub></details>|<a href="https://www.youtube.com/watch?v=0ZN6DdsBUZo" target="_blank"><img height="18px" src="assets/icon-youtube.svg"></img></a>|
-|GMC|Sierra 1500 2020-21|Driver Alert Package II|openpilot available[<sup>1</sup>](#footnotes)|0 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=GMC&model=Sierra 1500 2020-21">Buy Here</a></sub></details>|<a href="https://youtu.be/5HbNoBLzRwE" target="_blank"><img height="18px" src="assets/icon-youtube.svg"></img></a>|
+|GMC|Sierra 1500 2020-21|Driver Alert Package II|openpilot available[<sup>1</sup>](#footnotes)|0 mph|6 mph|[![star](assets/icon-star-full.svg)](##)|[![star](assets/icon-star-empty.svg)](##)|<details><summary>Parts</summary><sub>- 1 GM connector<br>- 1 comma 3X<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=GMC&model=Sierra 1500 2020-21">Buy Here</a></sub></details>|<a href="https://youtu.be/5HbNoBLzRwE" target="_blank"><img height="18px" src="assets/icon-youtube.svg"></img></a>|
 |Honda|Accord 2018-22|All|openpilot available[<sup>1</sup>](#footnotes)|0 mph|3 mph|[![star](assets/icon-star-empty.svg)](##)|[![star](assets/icon-star-full.svg)](##)|<details><summary>Parts</summary><sub>- 1 Honda Bosch A connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Honda&model=Accord 2018-22">Buy Here</a></sub></details>|<a href="https://www.youtube.com/watch?v=mrUwlj3Mi58" target="_blank"><img height="18px" src="assets/icon-youtube.svg"></img></a>|
 |Honda|Accord Hybrid 2018-22|All|openpilot available[<sup>1</sup>](#footnotes)|0 mph|3 mph|[![star](assets/icon-star-empty.svg)](##)|[![star](assets/icon-star-full.svg)](##)|<details><summary>Parts</summary><sub>- 1 Honda Bosch A connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Honda&model=Accord Hybrid 2018-22">Buy Here</a></sub></details>||
 |Honda|Civic 2016-18|Honda Sensing|openpilot|0 mph|12 mph|[![star](assets/icon-star-empty.svg)](##)|[![star](assets/icon-star-full.svg)](##)|<details><summary>Parts</summary><sub>- 1 Honda Nidec connector<br>- 1 RJ45 cable (7 ft)<br>- 1 comma 3X<br>- 1 comma power v2<br>- 1 harness box<br>- 1 mount<br>- 1 right angle OBD-C cable (1.5 ft)<br><a href="https://comma.ai/shop/comma-3x.html?make=Honda&model=Civic 2016-18">Buy Here</a></sub></details>|<a href="https://youtu.be/-IkImTe1NYE" target="_blank"><img height="18px" src="assets/icon-youtube.svg"></img></a>|
diff --git a/selfdrive/car/docs_definitions.py b/selfdrive/car/docs_definitions.py
index 880404feca..2e80dde010 100644
--- a/selfdrive/car/docs_definitions.py
+++ b/selfdrive/car/docs_definitions.py
@@ -114,7 +114,7 @@ class CarHarness(EnumBase):
   hyundai_r = BaseCarHarness("Hyundai R connector")
   custom = BaseCarHarness("Developer connector")
   obd_ii = BaseCarHarness("OBD-II connector", parts=[Cable.long_obdc_cable, Cable.long_obdc_cable], has_connector=False)
-  gm = BaseCarHarness("GM connector")
+  gm = BaseCarHarness("GM connector", parts=[Accessory.harness_box])
   nissan_a = BaseCarHarness("Nissan A connector", parts=[Accessory.harness_box, Cable.rj45_cable_7ft, Cable.long_obdc_cable, Cable.usbc_coupler])
   nissan_b = BaseCarHarness("Nissan B connector", parts=[Accessory.harness_box, Cable.rj45_cable_7ft, Cable.long_obdc_cable, Cable.usbc_coupler])
   mazda = BaseCarHarness("Mazda connector")