C0710 on 2007-2011 GMC Yukon Denali XL: StabiliTrak and Steering Sensor Fixes

What's Unique About the 2007-2011 Gmc YUKON DENALI XL

The GMT900 platform, which includes the Yukon, is well-documented for having issues with the Steering Angle Sensor's electrical connector. Movement and vibration, especially from the telescoping steering column feature, can cause the connector terminals to rub against each other, leading to fretting corrosion and high resistance. GM issued multiple Technical Service Bulletins (TSBs), most notably PI0639D, which specifically advise against replacing the sensor itself and instead provide a detailed procedure to secure the connector with a shim and apply dielectric grease.

Diagnostic Flowchart

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

Symptoms You May Notice

• "Service StabiliTrak" message on the Driver Information Center (DIC)
• "Service Traction Control" message on the DIC
• StabiliTrak/Traction Control indicator light illuminated
• ABS indicator light illuminated
• Unwanted stability control activation (rare)
• Intermittent issue, may only appear during long highway drives at first.

Most Likely Causes

1. Loose or Corroded Steering Angle Sensor Connector 🔴 High Probability → Shop Steering Angle Sensor The design allows for excessive movement between the male and female connector halves, especially on vehicles with telescoping columns, leading to fretting corrosion and high resistance over time. This is a widely known issue addressed by 🎬 See this video for a walkthrough on fixing code C0710. multiple GM TSBs.
   How to confirm: Visually inspect the connector at the base of the steering column. Wiggle the connector to check for looseness. Disconnect it and look for small dark smudges (fretting corrosion) on the terminal pins, which may require a magnifying glass to see.
   Typical fix: Follow the procedure in TSB PI0639D: disconnect the connector, apply dielectric grease (GM P/N 12377900) to both sides, add an adhesive shim (Kent Automotive P40100) or a retaining clip (GM P/N 19179794) to the male connector to eliminate movement, and reconnect.
   Est. part cost: $5-$20
2. Faulty Steering Angle Sensor (SAS) ⚪ Low Probability → Shop Steering Angle Sensor While less common than the connector issue, the sensor itself can fail internally. TSBs specifically warn not to replace the sensor unless the connector fix has failed.
   How to confirm: After confirming the connector is secure and clean, use a bi-directional scan tool to monitor the steering angle sensor's live data. The angle should change smoothly from approximately -500 to +500 degrees as you turn the wheel. If the data is frozen, jumps erratically, or is absent, the sensor is likely bad.
   Typical fix: Replace the steering angle sensor. This requires partial or full removal 🎬 Watch: Pro tips and tricks for replacing the steering position sensor. of the steering column. A steering angle calibration with a capable scan tool is required after installation.
   Est. part cost: $60-$150
3. Improper Wheel Alignment or Steering Centering ⚪ Low Probability
   How to confirm: Check if the steering wheel is centered when driving straight. A significant off-center position can cause a discrepancy between the SAS reading and what the vehicle's yaw/lateral acceleration sensors report. One owner reported that after a rack and pinion replacement, the steering was off by a full turn, causing the code. Another noted the code appeared with a constant pull and disappeared after getting new tires and an alignment.
   Typical fix: Perform a four-wheel alignment. If the steering wheel or shaft was removed and reinstalled incorrectly, it must be centered on the steering shaft.
   Est. part cost: $100-$200 for alignment

Rare But Worth Checking

• Damaged Wiring Harness: The wiring between the SAS and the EBCM can become chafed or damaged. TSB PI0639D suggests that if the code returns after the grease/shim fix, the harness-side connector pigtail may need to be replaced.
• Poor Body Control Module (BCM) Ground (G218): TSB PIT5405C notes that a poor ground at G218, often caused by an insulator mat trapped under the ground eyelet, can cause a wide range of electrical issues and DTCs, including U0428 (Invalid Data Received From Steering Angle Sensor Module), which can be related to C0710.
• Physically Dislodged Sensor Housing: In one documented case, a user on the Tahoe Yukon Forum found the entire plastic housing for the sensor had slid down the steering shaft. Sliding it back up until it clicked into place solved the problem without any parts.

Diagnosis Steps

1. Read all DTCs from the EBCM. Note if C0455 or U2143 are also present.
2. Inspect the vehicle for any modifications like lift kits, oversized wheels, or tires as per TSB PIT4322G.
3. Gain access to the steering column under the driver's side dash. Locate the Steering Angle Sensor and its connector, typically on the lower part of the column.
4. Check if the sensor housing itself has slid down the steering column shaft. It should be securely clicked into place.
5. Wiggle the SAS connector to see if it feels loose.
6. Disconnect the connector. Inspect the male and female terminals for any signs of fretting corrosion (dark smudges). A magnifying glass may be helpful.
7. Apply a small piece of adhesive shim stock (Kent Automotive P40100) or install a retaining clip (GM P/N 19179794) to the flat surface of the male connector to create a tighter fit.
8. Using a small nylon brush, apply dielectric lubricant (GM P/N 12377900) to both the sensor and harness side of the connector. Do not over-apply.
9. Reconnect the connector, ensuring it is fully seated. Clear the DTCs.
10. Road test the vehicle. If the code does not return, the repair is complete.
11. If the code returns, use a scan tool to monitor the live data from the steering angle sensor while turning the steering wheel lock-to-lock. The value should change smoothly and logically.
12. If live data is erratic, absent, or frozen, and the connector is confirmed good, replace the Steering Angle Sensor.
13. After replacement, perform a steering angle sensor calibration using a compatible scan tool.

Parts You'll Likely Need

• Dielectric Grease (OEM #12377900) — Essential for preventing moisture and fretting corrosion at the problematic SAS connector, as recommended by GM TSB PI0639D.
  Trusted brands: ACDelco, Permatex
  OEM price range: $10-$20
  Aftermarket price range: $5-$10
• Steering Angle Sensor (OEM #19418403) — This is the correct part to replace if the sensor itself has failed after ruling out the connector issue. This part number supersedes the older 20910871.
  Trusted brands: ACDelco, Dorman (601-175)
  OEM price range: $70-$120
  Aftermarket price range: $60-$100
• Adhesive Shim Stock / Retaining Clip (OEM #19179794 (Clip) or Kent P40100 (Shim)) — A specific part called for in GM TSBs to add tension to the SAS connector and prevent movement that causes fretting corrosion.
  Trusted brands: GM, Kent Automotive
  OEM price range: $5-$15
  Aftermarket price range: N/A

Related Codes That Often Appear With This One

• C0455 — This code for 'Steering Position Sensor Circuit' is often set alongside C0710, as they both relate to the same sensor and circuit. TSB PI0639D mentions them appearing together.
• U2143 — This code indicates 'Lost Communication With Steering Angle Sensor Module' and can appear if the electrical connection is poor enough to completely interrupt communication.

Technical Service Bulletins (TSBs) & Recalls

• PI0639D: The definitive TSB. Outlines the primary fix of adding an adhesive shim (Kent P40100) and dielectric grease to the steering angle sensor connector to stop fretting corrosion.
• PIT4322G: Warns to check for vehicle modifications (lifts, wheels, tires) before performing in-depth diagnostics for a C0710 code.
• PIT4225F: Notes that C0710 can be accompanied by an ABS lamp and C0455, pointing towards the steering angle sensor circuit.
• PIT5405C: Details how a poor ground at G218 can cause a multitude of electrical issues, including DTCs related to the steering angle sensor like C0710 and U0428.

Platform-Specific Known Issues

• A known design flaw with the SAS connector causes excessive movement and fretting corrosion, which is the root cause for this code in the vast majority of cases.
• TSB PI0639D provides a specific, low-cost fix using adhesive shim stock and dielectric grease that should be the first step in any diagnosis.
• Vehicles equipped with the telescoping steering wheel option are particularly prone to this issue due to the repeated movement of the wiring and connector.

Mechanic-Grade Diagnostic Values

• Steering Angle Sensor Live Data Range — expected: Smoothly changes from approximately -500° to +500° when turning the steering wheel lock-to-lock.. Failure: Value is frozen, jumps erratically, is absent, or does not update in the EBCM live data screen.
• Steering Angle Sensor Circuit Resistance — expected: Less than 0.5 ohms end-to-end.. Failure: Resistance is higher than 0.5 ohms, indicating a wiring issue or a poor connection that needs to be addressed, potentially by replacing the harness-side pigtail connector.
• Steering Angle Sensor Reference Voltage — expected: 12V reference voltage from the EBCM.. Failure: Significantly lower or no voltage at the sensor connector indicates a wiring or EBCM issue.

Hidden / Shadow Codes Worth Checking

• C0710-5A: Indicates 'Steering Position Signal Not Plausible'. This specific symptom byte points to the signal being present but illogical compared to other vehicle sensors. (see via A professional scan tool like an Autel or a GM Tech 2 can read symptom bytes.)
• C0710-42: Indicates 'Steering Wheel Angle Signal Calibration Not Programmed'. This often appears after a component replacement (sensor, EBCM, steering column) before the calibration procedure has been completed. (see via A professional scan tool capable of reading GM-specific codes and symptom bytes.)

Scan Tool Commands That Help

• GM Tech 2 / Professional Scan Tool: Steering Wheel Angle Sensor Centering / Learn — This procedure is required after replacing the steering angle sensor, steering column, steering gear, or performing a wheel alignment to reset the sensor's zero position. The path on a Tech 2 is typically under Chassis > Electronic Brake Control Module (EBCM) > Special Functions.
• GM Tech 2 / Professional Scan Tool: Data Display > EBCM — Used to view the live data from the steering angle sensor as seen by the Electronic Brake Control Module. A technician can confirm if the signal is being received correctly by turning the wheel and watching for a smooth change in degrees. A discrepancy between the sensor's output and the EBCM's received value points to a communication breakdown.

Wiring & Ground Locations

• G218 — On the driver's side, under the dash near the A-pillar. It is a stud with a nut securing one or more ground eyelets.. This is a primary ground for the Body Control Module (BCM). TSB PIT5405C states a poor connection here, often due to an insulation mat getting trapped under the eyelet, can cause a host of DTCs, including C0710 and U0428 (related to SAS communication). Ensuring this ground is clean and tight is a critical step for complex electrical issues.
• Steering Angle Sensor Connector — At the base of the steering column, accessible from under the driver's side dashboard.. This is the single most common failure point for this code. Fretting corrosion due to a loose fit is the primary cause, addressed by TSB PI0639D with dielectric grease and a shim/clip.

Real Owner Repair Stories

• Tahoe Yukon Forum (2007-2011 era GM SUV) — Service StabiliTrak and Traction Control warnings with code C0710.
  ❌ Tried (didn't work) Multiple dealership visits could not diagnose the cause.
  ✅ What actually fixed it The owner had a rack and pinion replaced, and the technician installed the steering shaft one full turn off-center. Correcting the steering shaft to its zero position and performing an alignment resolved the C0710 code.
• Tahoe Yukon Forum (2007-2011 era GM SUV) — Intermittent C0710 code with Service StabiliTrak message, particularly on long drives.
  ❌ Tried (didn't work) Initial diagnosis was unclear.
  ✅ What actually fixed it The issue started after getting a flat tire and replacing it with a temporary used tire, which caused a constant pull to one side. After getting a new set of matching tires and a proper alignment, the steering wheel was centered again, and the code did not return.

OEM Part Supersession History

• 20910871 → 19418403 — Standard part number update by GM. The new part is a direct replacement.