GM Service Manual Online
For 1990-2009 cars only

Convertible Top Manual

For care and cleaning of the convertible top, see Convertible Top under "Service and Appearance Care". High pressure car washes may cause water to enter the vehicle.

If the vehicle has this feature, the following procedures explain the proper operation of the manual convertible top.

The parts of the manual convertible top that are used when lowering and raising it are:


Object Number: 1480282  Size: B3
  1. Front Edge of the Convertible Top

  2. Rear Edge of the Convertible Top

  3. Tonneau Cover

Notice: Leaving the convertible top down and exposing the interior of your vehicle to outdoor conditions may cause damage. Always close the convertible top if leaving your vehicle outdoors.

Notice: Lowering the convertible top when there are objects in the storage area could damage it or break the glass rear window. Always verify that no objects are in the storage area before lowering the convertible top.

Notice: Lowering the top if it is damp, wet, or dirty can cause stains, mildew, and damage to the inside of your vehicle. Dry off the top before lowering it.

Notice: If you lower the top on your vehicle in cold weather (0°F/-18°C or lower), you may damage top components. Do not lower the top in cold weather.

Notice: If you raise or lower the convertible top while the vehicle is in motion, you could damage the top or the top mechanism. The repairs would not be covered by your warranty. Always put an automatic transmission in (P) Park or a manual transmission in (N) Neutral before raising or lowering the convertible top.

When exiting a vehicle with a manual transmission, put the vehicle into REVERSE (R) and turn the vehicle off.

Lowering the Manual Convertible Top

  1. Park on a level surface. Shift an automatic transmission into PARK (P) and set the parking brake. Shift a manual transmission into NEUTRAL and set the parking brake.
  2. Make sure the ignition is OFF.
  3. Make sure the trunk is closed and that the cargo divider in the rear storage area is in the fastened upright position.

  4. Object Number: 1471257  Size: B3
  5. The convertible top front latch, located above the inside rearview mirror, must be unlocked. Pull the convertible top front latch down and turn it clockwise to unlock it.

  6. Object Number: 806316  Size: B3
  7. Lift upward on the front edge (A) of the convertible top off of the windshield frame. Then lift upward on the rear edge (B) of the convertible top so it is vertical to the tonneau cover (C). The front edge (A) and rear edge (B) should be straight up.

  8. Object Number: 1492186  Size: B3
  9. Tilt the driver's seatback forward and press the storage compartment release button located on the underside of the tonneau cover (C) behind the driver's seat. Then raise the tonneau cover (C). If the tonneau cover does not release and three chimes are heard, check to make sure the trunk lid is closed. Also, the cover will not release if the vehicle alarm is turned on.
  10. After pressing the release button, the driver's and passenger's door glass should retract to the full-down position.

    If the vehicle has lost battery power, the tonneau cover  (C) can still be opened using the manual release cable.


    Object Number: 1430905  Size: B3
  11. The cable is located underneath the carpeting behind the passenger seat, in the center of the vehicle. When using the manual release, first open the doors to prevent damage to the seals. To access the cable, lift and pull back the carpeting. Then pull the cable to release the tonneau cover.
  12. Notice: If you lower the convertible top into the storage compartment and the rear edge of the top is not in the full-down position, you could damage the top. Always verify that the rear edge of the convertible top is in the full-down position before lowering the top into the storage compartment.


    Object Number: 1480382  Size: B3
  13. Push forward on the front edge (A) of the convertible top to allow the rear edge (B) of the convertible top to be moved to its full-down position.

  14. Object Number: 807969  Size: B3
  15. Then move the top rearward to its fully-stored position.
  16. After the top is stored, apply one even push on the center of the front edge (A) of the convertible top to assure that the top is fully retracted.
  17. Close the tonneau cover  (B) by pressing down on it with a swift, firm motion.

Raising the Manual Convertible Top

  1. Park on a level surface. Shift an automatic transmission into PARK (P) and set the parking brake. Shift a manual transmission into NEUTRAL and set the parking brake.
  2. Lower both windows.
  3. Make sure the ignition is OFF.
  4. Tilt the driver's seat forward and press the tonneau cover release button, or use the manual release cable if battery power has been lost. See step six under "Lowering the Manual Convertible Top" earlier in this section.
  5. After pressing the release button, the driver and passenger door glass should retract to the full-down position, if they have not already been lowered.

  6. Lift the tonneau cover.

  7. Object Number: 807974  Size: B3
  8. Pull the convertible top up by firmly gripping the front edge (A) near the center and applying a brisk upward and forward motion to get the top in the full-up position.

  9. Object Number: 807978  Size: B3
  10. Lift the rear edge (B) of the convertible top to its full-up position by first raising the front edge (A).
  11. Close the tonneau cover  (C) by pushing it down with a swift, firm motion.
  12. Lower the rear edge (B) of the convertible top by first slightly pushing the front edge (A) of the convertible top forward.
  13. Push the front edge (A) of the convertible top down from the outside of the vehicle, or pull the front edge (A) of the convertible top down from the center pull-down handle located in the inside of the vehicle.

  14. Object Number: 1471279  Size: B3
  15. Pull the top front latch handle down and turn it counterclockwise to lock the convertible top.

Convertible Top Power

For care and cleaning of the convertible top see Convertible Top under "Service and Appearance Care". High pressure car washes may cause water to enter the vehicle.

To operate the power convertible top use the following steps.

Notice: Leaving the convertible top down and exposing the interior of your vehicle to outdoor conditions may cause damage. Always close the convertible top if leaving your vehicle outdoors.

Notice: Lowering the convertible top when there are objects in the storage area could damage it or break the glass rear window. Always verify that no objects are in the storage area before lowering the convertible top.

Notice: Lowering the top if it is damp, wet, or dirty can cause stains, mildew, and damage to the inside of your vehicle. Dry off the top before lowering it.

Notice: If you lower the top on your vehicle in cold weather (0°F/-18°C or lower), you may damage top components. Do not lower the top in cold weather.

Notice: If you raise or lower the convertible top while the vehicle is in motion, you could damage the top or the top mechanism. The repairs would not be covered by your warranty. Always put an automatic transmission in (P) Park or a manual transmission in (N) Neutral before raising or lowering the convertible top.

Notice: If you do not put a manual transmission in REVERSE (R) before exiting your vehicle, your vehicle will not be secured, and could be damaged. Always put a manual transmission in REVERSE (R) before shutting off the engine and exiting the vehicle.

When exiting a vehicle with a manual transmission, put the vehicle into REVERSE (R) and turn the vehicle off.

Lowering the Power Convertible Top

  1. Park on a level surface. The vehicle must be running or in ACC. Shift an automatic transmission into PARK (P) and set the parking brake. Shift a manual transmission into NEUTRAL, and set the parking brake.
  2. Make sure the trunk is closed and that the trunk partition in the rear storage area is in the fastened, upright position, and that no objects are forward of the divider.

  3. Object Number: 1471257  Size: B3
  4. Release the convertible top front latch, located above the inside rearview mirror, by pulling and turning it clockwise toward the driver's door. The windows will automatically lower.

  5. Object Number: 1430901  Size: A2
  6. Push and hold the bottom of the power convertible top button, located to the left of the steering wheel, on the instrument panel.

The windows will automatically lower and the convertible top will lower into the rear of the vehicle. A chime will sound when the convertible top has lowered completely. If the radio is on the sound may be muted for a brief time.

If the convertible top is operated multiple times, the engine should be running to prevent drain on the vehicle's battery. Under certain conditions, the Driver Information Center (DIC) may display a message regarding the power convertible top. See DIC Warnings and Messages for more information.

Raising the Power Convertible Top

Notice: If you raise or lower the convertible top while the vehicle is in motion, you could damage the top or the top mechanism. The repairs would not be covered by your warranty. Always put an automatic transmission in (P) Park or a manual transmission in (N) Neutral before raising or lowering the convertible top.

Notice: If you do not put a manual transmission in REVERSE (R) before exiting your vehicle, your vehicle will not be secured, and could be damaged. Always put a manual transmission in REVERSE (R) before shutting off the engine and exiting the vehicle.

When exiting a vehicle with a manual transmission, put the vehicle into REVERSE (R) and turn the vehicle off.

  1. Park on a level surface. The vehicle must be running or in ACC. Shift an automatic transmission into PARK (P) and set the parking brake. Shift a manual transmission into NEUTRAL and set the parking brake.
  2. Make sure the trunk lid is closed and the trunk partition in the rear storage area is in the fastened, upright position, and that no objects are forward of the divider.
  3. Push and hold the top of the power convertible button. The top will raise and the windows will lower if they were in the raised position. A chime will sound when the top is raised completely.
  4. After the convertible top is completely raised, release the power convertible top button. If the button is pressed again within five seconds the windows will raise.
  5. Pull the convertible front top latch down and turn it counterclockwise to lock the convertible top.

Object Number: 1471279  Size: B3

If the radio is on the sound may be muted for a brief time.

If the vehicle has lost power, the convertible top can still be raised by releasing pressure on the hydraulic pump, located under the passenger's side of the tonneau cover, by using the following steps. The carpet liner must be pulled back to access the hydraulic pump.

  1. Open the tonneau cover.

  2. Object Number: 1492137  Size: B3
  3. Locate the pressure release bolt on the front side of the hydraulic pump.
  4. Use the wrench, attached to the inboard side of the hydraulic pump, and turn the pressure release bolt counterclockwise one revolution, to relieve pressure to the hydraulic pump. This will allow you to manually raise the convertible top.
  5. Then follow the steps under raising the manual convertible top. See "Convertible Top (Manual)" under Convertible Top

When power is restored to the vehicle, the hydraulic bolt must be tightened, by turning it clockwise. The power convertible top button can then be used to lower or raise the convertible top.

If the power convertible top is operated multiple times, the engine should be running to prevent drain on the vehicle's battery. Under certain conditions, the Driver Information Center (DIC) may display a message regarding the power top. See DIC Warnings and Messages for more information.

There is a tonneau cover emergency release cable located behind the passenger's seat head restraint, on the underside forward edge of the tonneau cover. Also, see Hatch for information on the emergency trunk release handle.