From cea54bf49858f32687d4dbc6e72f6976c26bc837 Mon Sep 17 00:00:00 2001
From: firestar5683 <168790843+firestar5683@users.noreply.github.com>
Date: Thu, 15 Jan 2026 22:40:08 -0600
Subject: [PATCH] Malibu GuessTune

---
 selfdrive/car/gm/values.py                | 2 +-
 selfdrive/car/torque_data/override.toml   | 1 +
 selfdrive/car/torque_data/substitute.toml | 1 -
 3 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/selfdrive/car/gm/values.py b/selfdrive/car/gm/values.py
index ab2dc479a..d4c81e711 100644
--- a/selfdrive/car/gm/values.py
+++ b/selfdrive/car/gm/values.py
@@ -258,7 +258,7 @@ class CAR(Platforms):
   )
   CHEVROLET_MALIBU_CC = GMPlatformConfig(
     [GMCarDocs("Chevrolet Malibu 2023 - No-ACC")],
-    CarSpecs(mass=1450, wheelbase=2.8, steerRatio=15.8, centerToFrontRatio=0.4),
+    CarSpecs(mass=1450, wheelbase=2.8, steerRatio=18.25, centerToFrontRatio=0.4, tireStiffnessFactor=0.997),
   )
   CHEVROLET_MALIBU_HYBRID_CC = GMPlatformConfig(
     [GMCarDocs("Chevrolet Malibu Hybrid 2017 - No-ACC")],
diff --git a/selfdrive/car/torque_data/override.toml b/selfdrive/car/torque_data/override.toml
index 1b79d243b..ca1b858e0 100644
--- a/selfdrive/car/torque_data/override.toml
+++ b/selfdrive/car/torque_data/override.toml
@@ -45,6 +45,7 @@ legend = ["LAT_ACCEL_FACTOR", "MAX_LAT_ACCEL_MEASURED", "FRICTION"]
 "CADILLAC_XT4" = [1.45, 1.6, 0.2]
 "CADILLAC_XT6" = [1.33, 1.9, 0.16]
 "CHEVROLET_BOLT_EUV" = [1.0, 2.0, 0.175]
+"CHEVROLET_MALIBU_CC" = [1.58, 1.8422651988094612, 0.205]
 "CHEVROLET_SILVERADO" = [1.9, 1.9, 0.112]
 "CHEVROLET_BLAZER" = [1.33, 1.33, 0.18]
 "CHEVROLET_TRAILBLAZER" = [1.33, 1.9, 0.16]
diff --git a/selfdrive/car/torque_data/substitute.toml b/selfdrive/car/torque_data/substitute.toml
index ee3f01bb7..2577d1611 100644
--- a/selfdrive/car/torque_data/substitute.toml
+++ b/selfdrive/car/torque_data/substitute.toml
@@ -57,7 +57,6 @@ legend = ["LAT_ACCEL_FACTOR", "MAX_LAT_ACCEL_MEASURED", "FRICTION"]
 "CADILLAC_ATS" = "CHEVROLET_VOLT"
 "CHEVROLET_MALIBU" = "CHEVROLET_VOLT"
 "CHEVROLET_MALIBU_SDGM" = "CHEVROLET_VOLT"
-"CHEVROLET_MALIBU_CC" = "CHEVROLET_VOLT"
 "HOLDEN_ASTRA" = "CHEVROLET_VOLT"
 "CHEVROLET_VOLT_CC" = "CHEVROLET_VOLT"
 "CHEVROLET_VOLT_CAMERA" = "CHEVROLET_VOLT"