diff --git a/selfdrive/car/gm/interface.py b/selfdrive/car/gm/interface.py
index c8bdccd07..4f42a933c 100644
--- a/selfdrive/car/gm/interface.py
+++ b/selfdrive/car/gm/interface.py
@@ -149,7 +149,7 @@ class CarInterface(CarInterfaceBase):
       ret.safetyConfigs = [get_safety_config(car.CarParams.SafetyModel.noOutput), ret.safetyConfigs[0]]
     gm_safety_cfg = ret.safetyConfigs[-1] if red_panda else ret.safetyConfigs[0]
     ret.autoResumeSng = False
-    ret.enableBsm = 0x142 in fingerprint[CanBus.POWERTRAIN]
+    ret.enableBsm = 0x142 in fingerprint.get(CanBus.POWERTRAIN, {})
 
     def has_sascm(fingerprint):
       return 0x2FF in fingerprint.get(CanBus.POWERTRAIN, {})
@@ -158,7 +158,7 @@ class CarInterface(CarInterfaceBase):
     if has_sascm(fingerprint):
       ret.flags |= GMFlags.SASCM.value
 
-    if PEDAL_MSG in fingerprint[0]:
+    if PEDAL_MSG in fingerprint.get(CanBus.POWERTRAIN, {}):
       ret.enableGasInterceptor = True
       gm_safety_cfg.safetyParam |= Panda.FLAG_GM_GAS_INTERCEPTOR
       if candidate == CAR.CHEVROLET_BOLT_ACC_2022_2023:
@@ -182,14 +182,14 @@ class CarInterface(CarInterfaceBase):
     if candidate in (CAMERA_ACC_CAR | SDGM_CAR | ASCM_INT) or candidate == CAR.CHEVROLET_VOLT_CAMERA:
       ret.experimentalLongitudinalAvailable = candidate not in (CC_ONLY_CAR | ASCM_INT | SDGM_CAR) or has_sascm(fingerprint)
       ret.networkLocation = NetworkLocation.fwdCamera
-      ret.radarUnavailable = 0x460 not in fingerprint[CanBus.OBSTACLE]
+      ret.radarUnavailable = 0x460 not in fingerprint.get(CanBus.OBSTACLE, {})
       ret.pcmCruise = True
       ret.minEnableSpeed = 5 * CV.KPH_TO_MS
       ret.minSteerSpeed = 10 * CV.KPH_TO_MS
       if candidate in SDGM_CAR:
         gm_safety_cfg.safetyParam |= Panda.FLAG_GM_HW_SDGM
         # Use C9 brake bit only on SDGM variants that lack 0xBE (ECMAcceleratorPos)
-        if ACCELERATOR_POS_MSG not in fingerprint[CanBus.POWERTRAIN]:
+        if ACCELERATOR_POS_MSG not in fingerprint.get(CanBus.POWERTRAIN, {}):
           gm_safety_cfg.safetyParam |= Panda.FLAG_GM_FORCE_BRAKE_C9
           ret.flags |= GMFlags.FORCE_BRAKE_C9.value
         ret.minEnableSpeed = -1.  # engage speed is decided by pcm
@@ -221,7 +221,7 @@ class CarInterface(CarInterfaceBase):
     else:  # ASCM, OBD-II harness
       ret.openpilotLongitudinalControl = not frogpilot_toggles.disable_openpilot_long
       ret.networkLocation = NetworkLocation.gateway
-      ret.radarUnavailable = RADAR_HEADER_MSG not in fingerprint[CanBus.OBSTACLE] and not docs
+      ret.radarUnavailable = RADAR_HEADER_MSG not in fingerprint.get(CanBus.OBSTACLE, {}) and not docs
       ret.pcmCruise = False  # stock non-adaptive cruise control is kept off
       # supports stop and go, but initial engage must (conservatively) be above 18mph
       ret.minEnableSpeed = 18 * CV.MPH_TO_MS
@@ -443,11 +443,11 @@ class CarInterface(CarInterfaceBase):
       gm_safety_cfg.safetyParam |= Panda.FLAG_GM_NO_ACC
 
     # Exception for flashed cars, or cars whose camera was removed
-    if (ret.networkLocation == NetworkLocation.fwdCamera or candidate in CC_ONLY_CAR) and CAM_MSG not in fingerprint[CanBus.CAMERA] and not candidate in (SDGM_CAR | ASCM_INT):
+    if (ret.networkLocation == NetworkLocation.fwdCamera or candidate in CC_ONLY_CAR) and CAM_MSG not in fingerprint.get(CanBus.CAMERA, {}) and not candidate in (SDGM_CAR | ASCM_INT):
       ret.flags |= GMFlags.NO_CAMERA.value
       gm_safety_cfg.safetyParam |= Panda.FLAG_GM_NO_CAMERA
 
-    if ACCELERATOR_POS_MSG not in fingerprint[CanBus.POWERTRAIN]:
+    if ACCELERATOR_POS_MSG not in fingerprint.get(CanBus.POWERTRAIN, {}):
       ret.flags |= GMFlags.NO_ACCELERATOR_POS_MSG.value
 
     return ret