Removes and replaces the air suspension height sensor on a 1966 Chevrolet Corvette equipped with aftermarket air suspension. This procedure covers sensor disconnection, removal, installation, and calibration preparation.

Warnings

Tools required

Parts

• Air suspension height sensor × 1 — Match to existing aftermarket air suspension system manufacturer
• Electrical contact cleaner × 1 — CRC or equivalent
• Dielectric grease × 1 — Use OEM specification

Preparation

1. Park vehicle on level, solid ground and engage parking brake.
2. Chock front wheels securely.
3. Disconnect negative battery terminal and secure cable away from battery post.
4. Raise rear of vehicle using floor jack at factory jacking points on frame rails.
5. Support vehicle with jack stands placed under frame rails ahead of rear axle.
6. Remove rear wheel on side where height sensor is located to improve access.
7. Allow air suspension system to settle to full droop position with vehicle raised.
8. Locate height sensor mounting bracket on rear suspension component (typically rear axle housing, trailing arm, or control arm).

Procedure

1. 1

   Document existing sensor position
   Before removal, note the exact mounting position and orientation of the existing height sensor. Take photos showing sensor body position, linkage rod angle, and wiring routing. Mark the sensor arm position relative to the mounting bracket with a paint pen or tape. This reference is critical for proper calibration of the replacement sensor. Verified detail (1966 Corvette lug nut torque is commonly specified around 65-75 ft-lbs for original steel/aluminum wheels; 80 ft-lbs is a plausible but uncertain figure. Worth verifying against factory spec rather than presenting as known.): Reinstall rear wheel and torque lug nuts to factory specification (approximately 65-70 ft-lbs for 1966 Corvette with original wheels; verify against factory service manual).
2. 2

   Disconnect sensor electrical connector
   Locate the electrical connector approximately 6-12 inches from the sensor body along the wiring harness. Press the locking tab on the connector and pull apart the male and female halves. Do not pull on the wires themselves. If connector is corroded or difficult to separate, spray with electrical contact cleaner and wait 30 seconds before attempting again.
3. 3

   Disconnect sensor linkage rod
   Locate the plastic or metal linkage rod connecting the sensor arm to the suspension component (typically the rear axle or control arm). The rod is usually attached with a ball-and-socket connection or clip. Use a flathead screwdriver to carefully pry the linkage rod end off the ball stud on the sensor arm. Note the orientation and length of the linkage rod for reinstallation.
4. 4

   Remove sensor mounting fasteners
   Remove the mounting bolts (typically 2) securing the height sensor bracket to the frame or suspension component; bolt size varies by manufacturer (commonly 10mm or 13mm head). If fasteners are corroded, apply penetrating oil and wait 10 minutes before attempting removal. Support the sensor body while removing the second bolt to prevent it from falling.
5. 5

   Remove sensor from vehicle
   Carefully pull the sensor assembly away from the mounting location. Thread the electrical connector through any routing clips or brackets along the frame rail. Inspect the mounting area for corrosion, debris, or damage that may affect the new sensor installation.
6. 6

   Prepare new height sensor
   Remove new sensor from packaging and compare mounting hole positions and electrical connector type to original sensor. Verify that the linkage arm range of motion matches the original. Apply a thin layer of dielectric grease to the connector seal and surrounding housing (not directly on the metal contact pins) to prevent moisture intrusion and corrosion. Set the sensor arm to the same position as marked on the original sensor during step 1.
7. 7

   Install new sensor to mounting bracket
   Position the new sensor in the mounting location with the sensor arm oriented to match the original installation. Thread the electrical connector back through frame routing clips. Start both mounting bolts by hand to ensure threads are not cross-threaded. Tighten the 2 mounting bolts finger-tight initially, then snug with a 10mm wrench. Do not fully torque until linkage rod is connected to allow for minor position adjustment.
8. 8

   Connect sensor linkage rod
   Align the linkage rod ball end with the ball stud on the sensor arm. Press firmly until the connection snaps into place with an audible click. Verify connection is secure by attempting to pull the rod off the ball stud with light hand pressure. The rod should not disconnect without prying with a tool.
9. 9

   Verify sensor arm travel
   With the vehicle still raised and suspension at full droop, manually move the sensor arm through its full range of motion to confirm there is no binding or interference with suspension components, brake lines, or frame members. The arm should move smoothly without binding through approximately 45 degrees of travel. Adjust sensor mounting position if any interference is detected before final tightening.
10. 10

    Final tighten sensor mounting bolts
    Once linkage rod is connected and sensor arm travel is verified, fully tighten the 2 sensor mounting bolts with a 10mm wrench. Tighten firmly to prevent sensor movement during suspension cycling, but do not overtighten as this may strip threads in mounting bracket.
11. 11

    Reconnect sensor electrical connector
    Clean the mating electrical connector on the vehicle harness side with electrical contact cleaner. Allow to dry completely. Align the male and female connector halves and press together firmly until the locking tab clicks into place. Tug gently on both sides of the connector to confirm it is fully seated and locked.
12. 12

    Secure wiring harness
    Route the sensor wiring harness along the frame rail or suspension component using existing clips or new wire ties to prevent the wiring from contacting moving suspension parts, the exhaust system, or the driveshaft. Leave enough slack in the harness to allow for full suspension travel without pulling on the connector.

Reassembly

1. Reinstall rear wheel and torque lug nuts to factory specification (typically 80 ft-lbs for 1966 Corvette with original wheels).
2. Carefully lower vehicle from jack stands using floor jack.
3. Remove jack stands and lower vehicle completely to ground.
4. Remove wheel chocks.
5. Reconnect negative battery terminal and tighten securely.
6. If air suspension system has an electronic control module with calibration or learning mode, follow manufacturer-specific procedures to calibrate the new height sensor to the vehicle ride height.

Verification

• With vehicle on level ground and battery reconnected, turn ignition to ON position (engine off) and verify air suspension control module does not display any fault codes related to height sensor.
• Start engine and allow air suspension to reach normal ride height. Verify all four corners lift evenly and vehicle settles to proper ride height within 2 minutes.
• Visually inspect sensor arm position at normal ride height. The arm should be approximately horizontal or match the angle noted during step 1 on the original sensor.
• Manually press down on rear bumper over the sensor location to compress suspension, then release. Verify air suspension system responds appropriately by re-leveling the vehicle within 30-60 seconds.
• Road test vehicle over varied terrain. Listen for unusual air compressor cycling that may indicate improper sensor calibration or connection issues.

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