diff --git a/selfdrive/car/gm/values.py b/selfdrive/car/gm/values.py
index 21c0188f3..4809ffabb 100644
--- a/selfdrive/car/gm/values.py
+++ b/selfdrive/car/gm/values.py
@@ -175,7 +175,7 @@ class CAR(Platforms):
       GMCarDocs("Chevrolet Silverado 1500 2020-21", "Safety Package II"),
       GMCarDocs("GMC Sierra 1500 2020-21", "Driver Alert Package II", video_link="https://youtu.be/5HbNoBLzRwE"),
     ],
-    GMCarSpecs(mass=2994, wheelbase=3.75, steerRatio=16.3, tireStiffnessFactor=1.0),
+    GMCarSpecs(mass=5716, wheelbase=3.75, steerRatio=16.3, tireStiffnessFactor=1.0),
   )
   CHEVROLET_EQUINOX = GMPlatformConfig(
     [GMCarDocs("Chevrolet Equinox 2019-22")],