C0010 on 2015-2022 GMC Terrain: ABS/TCS Light Causes and Fixes

What's Unique About the 2015-2022 Gmc TERRAIN

The GMC Terrain and its platform-mate, the Chevrolet Equinox, are unique regarding this code due to the sensitivity of their Electronic Brake Control Module (EBCM) logic. GM has issued multiple Technical Service Bulletins (TSBs) acknowledging that driver habits, such as quick three-point turns, can induce this code without any actual part failure. The diagnostic system flags a fault because the gear selection signal doesn't match the data from the wheel speed sensors, a scenario the module interprets as an error. This is a well-documented software-related quirk rather than a common hardware problem, and GM explicitly states not to re-flash the EBCM as it will not correct the issue.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Generation note: This issue affects both the first-generation (2015-2017) and second-generation (2018-2022) GMC Terrain. GM Technical Service Bulletins like PIT5696 were updated multiple times over the years to explicitly expand the model year range to include 2015 through 2024 models.

Symptoms You May Notice

• ABS light is on
• Traction Control System (TCS) or StabiliTrak light is on
• A 'Service StabiliTrak' or 'Service ABS System' message may appear on the driver information center
• Possible OnStar notification of a diagnostic issue

Most Likely Causes

1. Shifting Into Reverse or Drive Before Coming to a Complete Stop 🔴 High Probability As documented in GM TSBs PIT5696H and 20-NA-118, the EBCM logic is sensitive to the vehicle moving in one direction while the gear selector is placed in the opposite direction. This is common during three-point turns or when quickly backing out of a parking space. The TSBs confirm there are no cases of a functional concern when this code is stored alone.
   How to confirm: Scan the EBCM for codes. If C0010.5A is the only code present, this is the most likely cause. Ask the driver about their shifting habits, specifically regarding 3-point turns or backing out of parking spots.
   Typical fix: Clear the Diagnostic Trouble Code (DTC) from the EBCM using a capable scan tool. Advise the driver to always bring the vehicle to a full stop before shifting between forward and reverse gears. No parts replacement is necessary.
   Est. part cost: $0

Rare But Worth Checking

• Faulty Left Front Wheel Speed Sensor: → Shop ABS Wheel Speed Sensor If C0010 is present with other wheel speed sensor or communication codes, or if it returns after clearing despite proper shifting habits, a hardware fault is possible. The sensor provides the speed data that the EBCM is misinterpreting.
• Damaged Wiring or Connector to Wheel Speed Sensor: → Shop ABS Wheel Speed Sensor Corrosion, chafing, or a loose connection at the sensor harness or the EBCM connector can interrupt the signal and cause this code, though it's less common than the driver-induced fault.
• Faulty Electronic Brake Control Module (EBCM): → Shop ABS Control Module This is the least likely cause. The module itself could fail, but this should only be considered after all other possibilities, including wiring and the sensor itself, have been thoroughly ruled out.

Diagnosis Steps

1. Connect a professional scan tool capable of reading Chassis (C) codes from the EBCM.
2. Check for stored DTCs. Note if C0010 is present with the '.5A' symptom byte.
3. If C0010.5A is the ONLY code stored, clear the code.
4. Road test the vehicle, making sure to come to a complete stop before shifting between Drive and Reverse. Attempt a few turns and parking maneuvers.
5. Re-scan the EBCM. If the code does not return, the issue was driver-induced. Advise the owner of the cause and the need to stop completely before shifting.
6. If the code returns, or if other codes were present initially, proceed with standard diagnostics for the left front wheel speed sensor circuit.
🎬 Watch: How to replace the front wheel speed sensor.
7. Inspect the wheel speed sensor for physical damage and the wiring harness for any signs of chafing, corrosion, or loose connections.
8. Use the scan tool to monitor live data from the left front wheel speed sensor while driving to check for erratic or missing signals.
9. If the sensor signal is faulty, replace the wheel speed sensor/hub bearing assembly.
10. If the sensor and wiring are good, the issue may be with the EBCM, which requires further advanced diagnostics.

Parts You'll Likely Need

• No Parts Required — In the vast majority of cases for this specific vehicle and code, the fix is a change in driver habit and clearing the code, as per GM TSBs 20-NA-118 and PIT5696H.
  OEM price range: $0
  Aftermarket price range: $0
• Front Wheel Speed Sensor Harness — If a hardware fault does exist, it is sometimes a damaged pigtail or connector rather than the sensor itself. This is a less common but possible repair.
  Trusted brands: ACDelco
  OEM price range: $40-$70
  Aftermarket price range: $20-$40
• Front Wheel Hub and Bearing Assembly (includes sensor) (OEM #ACDelco 23498355 (for 2015-2017 models), ACDelco 84449199 (for 2018-2022 models)) — On the Terrain, the wheel speed sensor is integrated into the wheel hub and bearing assembly and is not sold separately. If the sensor is confirmed to be faulty, the entire hub must be replaced. Part numbers can vary 🎬 See this walkthrough for replacing the front wheel hub assembly. by FWD/AWD, so always verify with VIN.
  Trusted brands: ACDelco, Timken, MOOG, Duralast
  OEM price range: $200-$300
  Aftermarket price range: $100-$180

Technical Service Bulletins (TSBs) & Recalls

• PIT5696H: Diagnostic Aid : ABS/TCS MIL On Code C0010 Symptom 5A Stored. This is the primary TSB identifying the driver-induced cause. It has been updated multiple times, with version H extending the affected model years for the Terrain/Equinox to 2024.
• 20-NA-118: Possible OnStar Notification, Malfunction Indicator Lamp (MIL) Illuminated, ABS/TCS Lamp On - DTC C0010.5A Set. This bulletin further explains the logic behind the false code (shifter position vs. actual gear) and explicitly states not to re-flash the EBCM.

Platform-Specific Known Issues

• A known software sensitivity in the Electronic Brake Control Module (EBCM) can cause code C0010.5A to set falsely during certain driving maneuvers like three-point turns.
• This issue is so prevalent that GM has released at least nine revisions of TSB PIT5696 (A through H) since 2019 to update the affected model years and clarify the diagnostic advice.

Mechanic-Grade Diagnostic Values

• Active Wheel Speed Sensor Voltage Supply — expected: Approximately 12V (or battery voltage) with ignition on, connector plugged in.. Failure: Voltage below 10.5V indicates a potential power supply issue to the sensor.
• Wheel Speed Sensor Signal (Live Data) — expected: On a scan tool, the Left Front Wheel Speed should match the other three wheel speeds while driving straight.. Failure: A reading that is erratic, drops to zero, or does not change with vehicle speed points to a faulty sensor or wiring issue.

Hidden / Shadow Codes Worth Checking

• C0010.5A: The symptom byte '5A' is critical. It specifies 'Incorrect Data' and is the key identifier for the driver-induced fault described in GM's TSBs. A generic C0010 without this byte would point more directly to a circuit malfunction. (see via A professional scan tool capable of reading GM-specific chassis codes and symptom bytes, such as a GM GDS2 or equivalent.)

Scan Tool Commands That Help

• GM GDS2 or equivalent: Labor Operation 2486098: Clear EBCM C0010.5A and Test Drive — This is the specific labor operation designated by GM in TSB 20-NA-118 for clearing the falsely set C0010.5A code under warranty. It allocates 0.3 hours for the procedure.

Wiring & Ground Locations

• EBCM Location — Located in the rear of the engine compartment.. This is the module that sets the code. Knowing its location is necessary for any advanced wiring checks or if module replacement is considered.
• G111 / G112 (Example Grounds) — For the first generation, grounds like G112 are located on the lower left front of the engine. These grounds are critical for front-end modules and sensors.. A poor ground connection for the EBCM or related circuits can cause erratic behavior and false codes. While not the primary cause for C0010.5A, checking major grounds is a key step in ruling out electrical issues if the code persists.
• ABS System Fuses (Gen 1: 2010-2017) — In the under-hood fuse block. Fuse #13 (40A) for the ABS pump and a blue 20A fuse for the ABS module.. Loss of power to the EBCM would cause multiple codes, but checking fuses is a fundamental first step in any ABS-related diagnosis.
• ABS System Fuses (Gen 2: 2018-2024) — In the under-hood fuse block. Specific fuse numbers should be verified with the owner's manual or fuse box diagram for the exact year.. Ensures the EBCM has proper power, which is essential for its operation and to prevent spurious codes.

Real Owner Repair Stories

• YouTube video by 'Gears and Gaskets' (2017 Chevrolet Equinox (platform mate)) — Service StabiliTrak light, ABS light, and Traction Control light were on. Scan revealed code C0040 (Right Front Wheel Speed Sensor Circuit), but the diagnostic principle is identical for C0010 (Left Front).
  ❌ Tried (didn't work) The owner had already tried clearing the codes, but they returned immediately, ruling out the driver-habit TSB issue.
  ✅ What actually fixed it The right front wheel speed sensor was confirmed to be the fault. The entire wheel hub and bearing assembly, which includes the integrated sensor, was replaced. After replacement and clearing the codes, the warning lights went away and did not return on a test drive. This confirms that while the TSB is common, actual hardware failure can still occur.

Model Year Variations Within This Range

• 2015-2017 vs 2018-2022: The front wheel hub and bearing assembly (which includes the wheel speed sensor) uses a different part number for the first generation (2015-2017) versus the second generation (2018-2022). The part for 2015-2017 is ACDelco 23498355, while the part for 2018-2022 is ACDelco 84449199. This indicates a design change between generations, and the parts are not interchangeable.