From 8098eb454ca0370ed8bef512596a0e1a09d54a88 Mon Sep 17 00:00:00 2001
From: firestar5683 <168790843+firestar5683@users.noreply.github.com>
Date: Mon, 26 Oct 2026 14:00:50 -0500
Subject: [PATCH] Limit Steering Counter Repair to Bolt Pedal Profiles

---
 opendbc_repo/opendbc/car/gm/carcontroller.py  |  9 ++++---
 .../gm/tests/test_bolt_volt_configurations.py | 27 +++++++++++++++++++
 prebuilt.json                                 |  2 +-
 3 files changed, 34 insertions(+), 4 deletions(-)

diff --git a/opendbc_repo/opendbc/car/gm/carcontroller.py b/opendbc_repo/opendbc/car/gm/carcontroller.py
index e6da94741e..7b84b2025a 100644
--- a/opendbc_repo/opendbc/car/gm/carcontroller.py
+++ b/opendbc_repo/opendbc/car/gm/carcontroller.py
@@ -267,6 +267,7 @@ class CarController(CarControllerBase):
     self.long_pitch_input = None
     self.bolt_removed_cancel_credit_used = 0
     self.bolt_pedal_removed = is_bolt_pedal_removed_profile(CP) or is_bolt_pedal_removed_profile(CP, stock_only=True)
+    self.bolt_steering_ack_counter = is_bolt_pedal_profile(CP) or is_bolt_pedal_profile(CP, stock_only=True)
     self.bolt_present_no_acc_stock = is_bolt_present_no_acc_pedal_profile(CP, stock_only=True)
     self.truck_tuning = TruckTuning() if truck_tuning_supported(CP) else None
     self.truck_tuning_input = None
@@ -604,9 +605,11 @@ class CarController(CarControllerBase):
       if CS.loopback_lka_steering_cmd_ts_nanos == 0 or out_of_sync:
         steer_step = self.params.STEER_STEP
 
-    if CS.loopback_lka_steering_cmd_updated:
-      # Batched or duplicate acknowledgements must not advance a local count.
-      self.lka_steering_cmd_counter = (CS.loopback_lka_steering_cmd_counter + 1) % 4
+    if self.bolt_steering_ack_counter:
+      if CS.loopback_lka_steering_cmd_updated:
+        self.lka_steering_cmd_counter = (CS.loopback_lka_steering_cmd_counter + 1) % 4
+    else:
+      self.lka_steering_cmd_counter += 1 if CS.loopback_lka_steering_cmd_updated else 0
 
     # Avoid GM EPS faults when transmitting messages too close together: skip this transmit if we
     # received the ASCMLKASteeringCmd loopback confirmation too recently
diff --git a/opendbc_repo/opendbc/car/gm/tests/test_bolt_volt_configurations.py b/opendbc_repo/opendbc/car/gm/tests/test_bolt_volt_configurations.py
index b44620a184..32907f4dbf 100644
--- a/opendbc_repo/opendbc/car/gm/tests/test_bolt_volt_configurations.py
+++ b/opendbc_repo/opendbc/car/gm/tests/test_bolt_volt_configurations.py
@@ -94,6 +94,33 @@ class TestBoltVoltConfigurations(unittest.TestCase):
               self.assertEqual((data[0] >> 4) & 3, expected)
               self.assertFalse(data[0] & 8)
 
+  def test_nonpedal_gm_preserves_legacy_loopback_counter_progression(self):
+    for identity in (CAR.CHEVROLET_VOLT, CAR.CHEVROLET_VOLT_CAMERA, CAR.CHEVROLET_VOLT_2019,
+                     CAR.CHEVROLET_BOLT_EUV):
+      for alpha in (False, True):
+        with self.subTest(identity=identity, alpha=alpha):
+          cp = ordinary_params(identity, alpha=alpha, radar=True)
+          cs = CarState(cp)
+          parsers = cs.get_can_parsers(cp)
+          packer = CANPacker(DBC[identity][Bus.pt])
+          controller = CarController(DBC[identity], cp)
+          self.assertFalse(controller.bolt_steering_ack_counter)
+          control = structs.CarControl()
+          expected = 0
+          for step, received in enumerate(([3], [0, 1], [0, 0], [1], [], [2, 3], [0])):
+            now = 1_000_000_000 + step * 100_000_000
+            packets = [packer.make_can_msg("ASCMLKASteeringCmd", 128, {"RollingCounter": value}) for value in received]
+            for parser in parsers.values():
+              parser.update([(now - 20_000_000, packets)])
+            cs.out = cs.update(parsers).as_reader()
+            expected += bool(received)
+            controller.frame = 20 + step * 10
+            _, commands = controller.update(control.as_reader(), cs, now)
+            steering = [message for message in commands if message[0] == 0x180 and message[2] == 0]
+            self.assertEqual(len(steering), 1)
+            self.assertEqual((steering[0][1][0] >> 4) & 3, expected % 4)
+            self.assertFalse(steering[0][1][0] & 8)
+
   def test_all_bolt_pedal_generations_withdraw_on_missing_stale_or_future_gear(self):
     for candidate in PEDAL_BOLT_CAR:
       for alpha in (False, True):
diff --git a/prebuilt.json b/prebuilt.json
index 31285023fa..f5e26550b1 100644
--- a/prebuilt.json
+++ b/prebuilt.json
@@ -1 +1 @@
-{"protected_inventory_sha256": "470c96defd2caf79d968f376298c74b5d1074d38bbac81a0c1dca0048efe7d7b", "schema_version": 1}
+{"protected_inventory_sha256": "a9f832c3ebc38987657921c543c1cad657a126d8a667f556f52a639c38ed8d2f", "schema_version": 1}