diff --git a/selfdrive/car/gm/interface.py b/selfdrive/car/gm/interface.py
index 415f966bc..c0d07f34d 100644
--- a/selfdrive/car/gm/interface.py
+++ b/selfdrive/car/gm/interface.py
@@ -273,8 +273,9 @@ class CarInterface(CarInterfaceBase):
       if is_bolt_2022_2023_pedal:
         ret.experimentalLongitudinalAvailable = False
         ret.pcmCruise = False
-    elif candidate in ASCM_INT and has_sascm(fingerprint):
-      ret.experimentalLongitudinalAvailable = True
+    elif candidate in ASCM_INT:
+      # kaofui parity: ASCM_INT cars require SASCM for experimental long
+      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.get(CanBus.OBSTACLE, {})
       ret.pcmCruise = True