This procedure replaces the trunk/liftgate actuator on a 1966 Chevrolet Corvette, restoring power trunk operation or converting to manual operation if the actuator has failed.

Warnings

Tools required

Parts

• Trunk actuator assembly × 1 — Use OEM specification or aftermarket equivalent for 1963-1967 Corvette
• Actuator mounting hardware kit × 1 — May be included with actuator
• Electrical connector (if corroded) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect negative battery cable to prevent accidental actuation during service
3. Open trunk fully and prop open with care to maintain access
4. Remove trunk interior trim panels if present to access actuator mounting area
5. Verify replacement actuator matches original unit type and mounting configuration

Procedure

1. 1

   Access the trunk actuator location
   The trunk actuator on the 1966 Corvette is located on the driver side trunk hinge mechanism. Remove the trunk side trim panel by carefully prying away with trim tool or screwdriver. The actuator is mounted to the trunk floor pan near the front left corner, connected to the trunk latch mechanism via a rod linkage.
2. 2

   Disconnect electrical connections
   Locate the electrical connector feeding the actuator motor. This is typically a 2-wire connector (power and ground) near the actuator body. Disconnect the connector by squeezing the locking tab and pulling straight apart. Inspect connector terminals for corrosion; clean with electrical contact cleaner if needed or replace if heavily corroded.
3. 3

   Disconnect the actuator rod linkage
   The actuator connects to the trunk latch mechanism via a metal rod with a clevis pin connection at each end. Use needle-nose pliers to remove the cotter pin or retaining clip securing the rod to the actuator arm. Slide the rod end off the actuator arm ball stud. Note the orientation and positioning for reinstallation.
4. 4

   Remove actuator mounting fasteners
   The actuator is secured to the trunk floor pan with 2 bolts or screws through slotted mounting holes. Remove these fasteners using appropriate socket or screwdriver. Support the actuator as you remove the final fastener to prevent it from falling.
5. 5

   Remove actuator assembly
   Carefully maneuver the actuator out of the mounting location. The unit may need to be rotated or angled to clear surrounding structure. Inspect the mounting area for corrosion or damage that may have contributed to actuator failure.
6. 6

   Prepare new actuator for installation
   Unpack the replacement actuator and verify it matches the original unit in size, mounting hole pattern, and rod connection type. If the new actuator includes mounting hardware, set aside the fasteners for installation. Test-fit the actuator in the mounting location before connecting anything.
7. 7

   Install new actuator assembly
   Position the new actuator in the mounting location with the rod connection arm oriented toward the latch mechanism. Align the mounting holes with the trunk floor pan. Insert mounting bolts and thread them in finger-tight initially. Ensure the actuator sits flush against the mounting surface before tightening fasteners. Tighten mounting bolts securely but avoid overtightening which may strip the thin sheet metal.
8. 8

   Connect actuator rod linkage
   Reconnect the metal rod to the actuator arm ball stud. The rod should slide onto the stud with minimal force. Install a new cotter pin or retaining clip to secure the connection. Verify the rod moves freely without binding through its full range of motion. The linkage should have slight slack when the trunk is in the closed and latched position.
9. 9

   Reconnect electrical connections
   Plug the electrical connector into the new actuator. Ensure the connector locks fully with an audible click. Route wiring away from moving components and sharp edges. Use wire ties if necessary to secure wiring to prevent chafing.
10. 10

    Reinstall trunk trim panels
    Replace the trunk side trim panel, ensuring all retaining clips engage properly. Verify no wiring is pinched between trim and body panels.

Reassembly

1. Reconnect negative battery cable
2. Ensure all tools and parts packaging are removed from trunk area
3. Verify trunk closes and latches properly without actuator interference

Verification

• With battery reconnected, test trunk release function from inside the vehicle using the release button or lever
• The trunk should unlatch smoothly and begin to rise with spring assistance when the release is activated
• Test release function 3-5 times to verify consistent operation
• Listen for abnormal noises such as grinding, clicking, or motor stalling which would indicate improper installation or linkage binding
• Verify trunk can still be opened manually via key cylinder as backup method
• Confirm trunk closes securely and latch engages fully without requiring excessive force

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