C0710 on 2007-2010 GMC Sierra 2500: StabiliTrak Light and Steering Sensor Fixes

What's Unique About the 2007-2010 Gmc SIERRA 2500

The GMT900 platform (2007-2014), which includes the 2007-2010 Sierra 2500, is notorious for issues with the Steering Angle Sensor circuit. GM has issued multiple Technical Service Bulletins (TSBs) addressing fretting corrosion and excessive clearance in the sensor's electrical connector as a primary cause of C0710. TSB PI0639D specifically instructs technicians to add a shim and dielectric lubricant to the connector rather than replacing the sensor. Furthermore, these trucks are frequently modified, and a specific TSB warns that suspension lifts or oversized tires can alter vehicle geometry enough to trigger this code, even with a perfectly functioning sensor.

Diagnostic Flowchart

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

Symptoms You May Notice

• "Service Stability" or "Service StabiliTrak" message on the Driver Information Center (DIC)
• StabiliTrak/Traction Control indicator light is on
• Unwanted stability activation (feeling of random braking or power reduction)
• "Steering Assist is Reduced Drive with Care" message on DIC

Most Likely Causes

1. Poor Connection at the Steering Angle Sensor (SAS) Connector 🔴 High Probability → Shop Steering Angle Sensor GM TSBs PI0639D and SB-10043887-2153 specifically identify fretting corrosion (dark smudges on terminals) and excessive clearance in the connector as a widespread issue on this platform. The TSB explicitly states, "DO NOT replace the steering position sensor for this condition."
   How to confirm: Visually inspect the SAS connector terminals, located on the steering column under the dash, for looseness or dark smudges that look like pencil lead. Wiggling the connector while monitoring live sensor data on a scan tool may cause the signal to drop out, confirming a bad connection.
   Typical fix: Disconnect the connector, clean the terminals with electrical contact cleaner and a small nylon brush, apply a small amount of dielectric grease (GM Part #12377900), and secure the connection. TSB PI0639D also recommends adding a piece of 'Adhesive Back Shim Stock' (Kent Automotive P/N P40100) to the male connector to eliminate excessive movement.
   Est. part cost: $5-$25
2. Steering Angle Sensor (SAS) Requires Calibration 🟡 Medium Probability → Shop Steering Angle Sensor
   How to confirm: This is the likely cause if the code appeared immediately after a wheel alignment, battery replacement, or any steering/suspension component replacement. A scan tool will show the steering angle is not at 0° when the wheels are straight ahead.
   Typical fix: Recalibrate the sensor using a compatible bidirectional scan tool. The procedure is often called 'Steering Wheel Angle Sensor Learn' or 'Centering'.
   Est. part cost: $0
3. Faulty Steering Angle Sensor (SAS) 🟡 Medium Probability → Shop Steering Angle Sensor
   How to confirm: If the connector has been serviced per the TSB and the signal is still faulty (stuck, erratic, or no voltage change when turning the wheel), and the sensor will not calibrate, the sensor itself has likely failed.
   Typical fix: Replace the Steering Angle Sensor. This requires partial disassembly of the steering column. 🎬 See these helpful tips and tricks for replacing the sensor. The new sensor must be calibrated after installation.
   Est. part cost: $90-$200
4. Vehicle Modifications ⚪ Low Probability As per TSB #PIT4322P, suspension lifts, leveling kits, or non-OEM size wheels/tires alter the vehicle's geometry, which can conflict with the StabiliTrak system's expected parameters and trigger a C0710 code.
   How to confirm: Inspect the vehicle for any aftermarket suspension or wheel/tire modifications. A user on the Tahoe Yukon Forum reported their C0710 code disappeared after replacing mismatched/worn tires and getting an alignment.
   Typical fix: Returning the vehicle to stock specifications is the official fix. Sometimes, a proper four-wheel alignment followed by a steering angle sensor recalibration can resolve the issue on modified vehicles.
   Est. part cost: $0-$200

Rare But Worth Checking

• Damaged Wiring Harness: While less common than connector fretting, the wiring harness between the SAS and the EBCM can become chafed or damaged, especially around the instrument panel or steering column. This can cause an intermittent or total loss of signal.
• Incorrectly Indexed/Installed Steering Shaft: If the code appeared after a major steering repair like a rack and pinion replacement, the steering shaft may have been installed one full turn off-center. A user on the Tahoe Yukon Forum had this exact issue, where a technician had to disconnect the intermediate shaft under the hood and re-center it to resolve the C0710 code.

Diagnosis Steps

1. Check for any vehicle modifications (lift kits, oversized tires) as per TSB #PIT4322P.
2. Connect a scan tool capable of reading GM chassis codes and live data (e.g., Tech 2, Autel).
3. Read fault codes from the Electronic Brake Control Module (EBCM). Note if C0710 is present with other codes like C0455.
4. Navigate to EBCM live data and monitor the 'Steering Wheel Position' parameter.
5. Turn the steering wheel from lock to lock. The angle reading should change smoothly and consistently. Jumps, freezes, or invalid data point to a sensor or connection issue.
6. With wheels pointing straight, check if the sensor reads near 0 degrees. A live data reading of 2.5 volts for the signal is also indicative of a straight-ahead position. If not, calibration is needed.
7. Gain access to the steering angle sensor connector at the base of the steering column by removing the lower dash/knee bolster panel.
8. Disconnect the connector and inspect terminals for fretting corrosion (dark smudges) or looseness.
9. If corrosion is found or suspected, perform the TSB fix: clean the terminals with contact cleaner, apply dielectric grease (GM P/N 12377900), and consider adding a shim to tighten the fit. 🎬 Watch: How to troubleshoot and fix C0710 signal codes. Reconnect securely.
10. Clear codes and re-test by driving. If the code does not return, the repair is complete.
11. If the connection is good and the signal is still faulty, attempt to recalibrate the sensor using the scan tool.
12. If calibration fails or the code returns immediately, replace the Steering Angle Sensor.

Parts You'll Likely Need

• Steering Angle Sensor (OEM #19418403) — This sensor is the component that provides the steering wheel angle data. It fails internally or its signal is interrupted, directly causing C0710. Part number 19418403 is an updated replacement for earlier numbers. This should only be replaced after the connector has been serviced per TSBs.
  Trusted brands: ACDelco (OEM), Dorman (e.g., 601-175)
  OEM price range: $150-$200
  Aftermarket price range: $90-$140
• Dielectric Grease (OEM #12377900) — Recommended by GM in multiple service bulletins to protect the cleaned electrical connector from moisture and future fretting corrosion, which is the most common cause of the code.
  Trusted brands: Permatex, ACDelco, Nyogel 760G
  OEM price range: $15-$25
  Aftermarket price range: $5-$10

Related Codes That Often Appear With This One

• C0455 — This code for 'Steering Position Sensor Circuit Malfunction' is often set alongside C0710 as they both relate to the same sensor and circuit. GM TSBs PI0639D and SB-10043887-2153 list them together as being caused by the same connector fretting issue.
• U2143 — This is a 'Lost Communication With Steering Angle Sensor Module' code. It indicates a more severe communication breakdown, often pointing to a complete wiring or connector failure rather than just an implausible signal.

Technical Service Bulletins (TSBs) & Recalls

• PIT4322P: Warns that vehicle modifications can cause C0710 and/or unwanted stability activation.
• PIT4322F: Notes unwanted stability activation and/or C0710.
• SB-10043887-2153 (replaces PI0639): Details the fix for fretting corrosion on the steering position sensor connector.

Platform-Specific Known Issues

• TSB #PIT4322P explicitly warns that vehicle modifications like lift kits can cause a C0710 code and unwanted stability control activation.
• TSB #SB-10043887-2153 (superseding PI0639) details the common problem of fretting corrosion in the SAS connector and provides a specific repair procedure involving cleaning, dielectric grease, and adding a shim to prevent connector movement.

Mechanic-Grade Diagnostic Values

• Steering Angle Sensor Analog Signal Voltage — expected: Approx. 2.5V with steering wheel centered. Should sweep smoothly between ~0.4V and ~4.6V when turning lock-to-lock.. Failure: Voltage is stuck, jumps erratically, does not change with steering input, or is outside the 0.4V-4.6V range.
• Steering Angle Sensor 5V Reference Circuit — expected: 4.8V - 5.2V between the 5V reference circuit terminal and ground.. Failure: Voltage is below 4.8V or above 5.2V, indicating a wiring issue or a fault in the EBCM.
• Steering Angle Sensor Low Reference Circuit Resistance — expected: Less than 2 Ω between the low reference circuit terminal and ground.. Failure: Resistance is 2 Ω or greater, indicating an open or high resistance in the ground circuit.

Hidden / Shadow Codes Worth Checking

• C0710 5A: Steering Position Signal Plausibility Failure. This means the EBCM is receiving a signal, but it doesn't make sense compared to other vehicle data (like yaw rate or wheel speed). It often occurs after a wheel alignment or if the steering shaft is incorrectly indexed. (see via Requires a professional scan tool like a GM Tech 2, GDS2, or high-end aftermarket scanner that can read manufacturer-specific symptom bytes.)
• C0710 42: Steering Wheel Angle Signal Calibration Not Programmed. This byte specifically indicates that the sensor's 'learn' or calibration procedure has not been performed or was unsuccessful. (see via Visible on professional scan tools with GM-specific software when accessing EBCM fault codes.)
• C0710 0F / C0710 17: Steering Position Signal Erratic / Shape/Waveform Failure. These bytes point to an inconsistent, noisy, or malformed signal, often caused by internal sensor failure or the fretting corrosion at the connector. (see via A GM-specific scan tool can pull these detailed fault descriptors from the EBCM.)

Scan Tool Commands That Help

• GM Tech 2 / GDS2 or equivalent: Steering Wheel Angle Sensor Learn (or Calibration) — This function is mandatory after replacing the steering angle sensor, performing a wheel alignment, replacing the EBCM, or if DTC C0710-42 is present. It is found in the EBCM 'Special Functions' menu and resets the sensor's zero-point with the wheels straight ahead.

Wiring & Ground Locations

• Steering Angle Sensor Connector — Located at the base of the steering column, accessible after removing the lower instrument panel/knee bolster.. This is the primary location for fretting corrosion and looseness described in GM TSBs, making it the most common point of failure for the C0710 code.
• G218 — A critical ground point located under the driver's side of the instrument panel, near the dash brace.. A poor connection at this ground, sometimes caused by trapped dash insulation, can cause a range of electrical issues including StabiliTrak faults like C0710.

Real Owner Repair Stories

• Tahoe Yukon Forum (2007-2014 GM SUV (platform mate)) — Service StabiliTrak and traction control warning lights with code C0710.
  ❌ Tried (didn't work) Multiple dealership visits could not diagnose the cause.
  ✅ What actually fixed it The user reported that after replacing mismatched tires and getting a proper wheel alignment, the vehicle's pull to the left was corrected and the C0710 code did not return.
• Tahoe Yukon Forum (2007-2014 GM SUV (platform mate)) — Service StabiliTrak message and C0710 code appeared after a rack and pinion replacement.
  ❌ Tried (didn't work) Initial diagnostics and alignment did not resolve the issue.
  ✅ What actually fixed it A technician found the steering shaft was off by one full turn. The fix was to disconnect the intermediate shaft under the hood and re-index it to the correct '0' position, which resolved the code.

OEM Part Supersession History

• 20910871 → 19418403 — Standard part update and revision by the manufacturer.
  Heads up: The 2010 model year is listed as having a '2nd Design' sensor labeled 20910871, which is now replaced by 19418403. This indicates a mid-year change, so verifying the existing part number or using a VIN lookup is crucial for 2010 models.

Model Year Variations Within This Range

• 2010: The 2010 model year had a mid-year design change for the steering angle sensor. Part catalogs refer to a '2nd Design' for 2010 models, which corresponds to the updated part number (originally 20910871, now 19418403). Early 2010 models may have used a different sensor, making visual confirmation or VIN-based part lookup important for this specific year.