From 98a9373346dcec06ac6d48e859a03e79b224ef83 Mon Sep 17 00:00:00 2001 From: Jason Jackrel Date: Wed, 27 May 2026 16:47:18 -0700 Subject: [PATCH 1/2] finally the volt tune --- opendbc_repo/opendbc/car/gm/interface.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/opendbc_repo/opendbc/car/gm/interface.py b/opendbc_repo/opendbc/car/gm/interface.py index e0ad84630..293f45378 100755 --- a/opendbc_repo/opendbc/car/gm/interface.py +++ b/opendbc_repo/opendbc/car/gm/interface.py @@ -58,6 +58,10 @@ NON_LINEAR_TORQUE_PARAMS = { "left": [3.8, 0.81, 0.24, 0.0465122], "right": [3.8, 0.81, 0.24, 0.0465122], }, + CAR.CHEVROLET_VOLT: { + "left": [1.5, 1.0, 0.155, 0.0], + "right": [1.5, 1.0, 0.155, 0.0], + }, } PEDAL_MSG = 0x201 From f425d864573a47f7ab76e46d13ca21dc8b260406 Mon Sep 17 00:00:00 2001 From: Jason Jackrel Date: Wed, 27 May 2026 16:48:27 -0700 Subject: [PATCH 2/2] update tire stiffness --- opendbc_repo/opendbc/car/gm/values.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/opendbc_repo/opendbc/car/gm/values.py b/opendbc_repo/opendbc/car/gm/values.py index b1d64c50e..23317076c 100644 --- a/opendbc_repo/opendbc/car/gm/values.py +++ b/opendbc_repo/opendbc/car/gm/values.py @@ -233,7 +233,7 @@ class CAR(Platforms): ) CHEVROLET_VOLT = GMASCMPlatformConfig( [GMCarDocs("Chevrolet Volt 2017-18", min_enable_speed=0, video="https://youtu.be/QeMCN_4TFfQ")], - GMCarSpecs(mass=1607, wheelbase=2.69, steerRatio=15.7, centerToFrontRatio=0.45, tireStiffnessFactor=0.469, minEnableSpeed=-1), + GMCarSpecs(mass=1607, wheelbase=2.69, steerRatio=15.7, centerToFrontRatio=0.45, tireStiffnessFactor=1.0, minEnableSpeed=-1), #tire stiffness factor hasn't been updated since 2018 and every other gm is on 1.0 dbc_dict={ Bus.pt: "gm_global_a_powertrain_volt", Bus.radar: "gm_global_a_object",