This procedure covers removal and replacement of the steering angle sensor located in the steering column assembly on 2014-2018 Chevrolet Silverado 1500 trucks with the 5.3L EcoTec3 engine.

Warnings

Tools required

Parts

• Steering angle sensor assembly × 1 — ACDelco 13590180 or equivalent

Preparation

1. Position vehicle on level surface and apply parking brake
2. Place wheel chocks behind rear wheels
3. Turn ignition to OFF position and remove key
4. Center steering wheel to ensure wheels are pointing straight ahead
5. Disconnect negative battery cable and wait at least 2 minutes
6. Lower steering column to lowest position and move fully forward for access

Procedure

1. 1

   Remove lower steering column covers
   Remove the lower knee bolster panel beneath the steering column by pulling outward to release clips. Remove the lower steering column cover by removing the mounting screws at the bottom edge. Carefully separate the upper and lower column covers.
   Torque spec

   Cover Screws14 Nm (10 lb-ft)
2. 2

   Disconnect electrical connectors
   Locate the steering angle sensor electrical connector on the steering column. Press the connector locking tab and carefully disconnect the wiring harness. Note the routing of the harness for reinstallation.
   ⚠Do not pull on wires; use connector body to separate connections
3. 3

   Remove intermediate shaft coupling bolt
   Locate the intermediate shaft coupling bolt at the base of the steering column where it connects to the steering gear. Mark the relationship between the shaft and coupling for reassembly alignment. Remove the coupling bolt completely.
   ⚠Mark shaft alignment before removal to ensure proper reassembly position
   Torque spec

   Coupling Bolt42 Nm (31 lb-ft)
4. 4

   Separate intermediate shaft coupling
   Carefully separate the intermediate shaft coupling from the steering column shaft. Support the intermediate shaft to prevent it from hanging on the steering gear input shaft. Do not allow the steering wheel to rotate from center position.
   ⚠️Lock steering wheel in place with tape or locking device to prevent clockspring damage
5. 5

   Remove steering angle sensor mounting fasteners
   Locate the steering angle sensor mounting bolts on the steering column housing. These are typically Torx fasteners. Remove all mounting bolts securing the sensor assembly to the column.
   Torque spec

   Mounting Bolts34 Nm (25 lb-ft)
6. 6

   Remove steering angle sensor
   Carefully slide the steering angle sensor assembly off the steering column shaft. Note the orientation and any alignment marks on the sensor housing. Inspect the sensor mounting surface and column shaft for damage or debris.
   ℹ️Handle sensor carefully to avoid damage to internal components
7. 7

   Install new steering angle sensor
   Position the new steering angle sensor onto the steering column shaft, ensuring proper alignment with any index marks or flats on the shaft. The sensor must be oriented correctly with the electrical connector facing the proper direction for harness routing. Verify the sensor is fully seated onto the column.
   ⚠Ensure sensor engages properly with shaft splines or alignment features before tightening fasteners
8. 8

   Install sensor mounting fasteners
   Install the steering angle sensor mounting bolts and tighten to specification in a cross-pattern if multiple bolts are used. Ensure sensor housing is properly aligned and seated against the steering column.
   Torque spec

   Mounting Bolts34 Nm (25 lb-ft)
9. 9

   Reconnect intermediate shaft coupling
   Align the marks made during disassembly and reconnect the intermediate shaft coupling to the steering column shaft. Ensure proper engagement before installing the coupling bolt. Install the coupling bolt and tighten to specification.
   ⚠Verify alignment marks match before tightening coupling bolt
   Torque spec

   Coupling Bolt42 Nm (31 lb-ft)
10. 10

    Reconnect electrical connector
    Route the wiring harness as noted during removal and reconnect the steering angle sensor electrical connector. Ensure the connector locks fully into place with an audible click.
    ℹ️Verify harness routing does not interfere with steering column tilt or telescoping functions
11. 11

    Reinstall steering column covers
    Reinstall the upper and lower steering column covers, ensuring all tabs are properly engaged. Install the cover screws to specification. Reinstall the knee bolster panel beneath the steering column.
    Torque spec

    Cover Screws14 Nm (10 lb-ft)
12. 12

    Reconnect battery and perform calibration
    Reconnect the negative battery cable. Turn ignition to ON position without starting engine. Using an OBD-II scan tool with GM programming capability, navigate to the steering angle sensor calibration function. Follow the scan tool prompts to complete the calibration procedure with wheels pointed straight ahead.
    ⚠️Steering angle sensor MUST be calibrated or stability control and ABS systems will malfunction

Reassembly

1. Verify all steering column covers and panels are securely fastened
2. Test steering column tilt and telescoping functions for proper operation
3. Ensure no wiring is pinched or interfering with moving components
4. Clear any diagnostic trouble codes that may have been set during the procedure

Verification

• Start engine and verify no warning lights remain illuminated on instrument cluster
• Using scan tool, verify steering angle sensor is reading correctly and shows 0 degrees with wheels straight ahead
• Turn steering wheel lock-to-lock slowly and verify sensor readings change smoothly on scan tool
• Test drive vehicle at low speed in safe area to verify stability control and ABS systems function normally
• Verify traction control and stability control warning lights do not illuminate during test drive

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