GM Century/Lumina/Grand Prix/Intrigue 1997-2000

Instrument Cluster

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These are electronic units. If one part of the cluster fails, the entire cluster must be replaced. Conventional speedometer cables are not used; the speedometer is a fully electronic unit. Some inputs are hard-wired, such as the turn indicators, high beam indicator and some of the warning lights. All other inputs to the instrument panel cluster are through a Class 2 Serial Data Communications Link. The primary inputs (speedometer, temperature, fuel and tachometer) are driven by information from the data link to the instrument cluster to the cluster microprocessor and then through the stepper motor driver. Although some conventional light bulbs are still being used, Light Emitting Diodes (LEDs) are being used for a number of warning lamps and indicators.

Depending on the vehicle, other information is displayed. Some vehicles may be equipped with a Driver Information Center (DIC) or Message Center. Displays may include the average fuel economy, the range, the fuel used and the oil life remaining. Warning messages may also appear such as Door Ajar, Trunk Ajar, Low Trac, and others. The information is delivered to the driver through tell-tale lamps or the indicators. The tell-tale lamps and indicators illuminate when either a grounding switch is closed or one of the pertinent modules provides a path to ground for the specific indicator. The Driver Information Display does not perform any self-tests or diagnostics and is used only as a communication device for the driver.

Another variation used on some models is the Heads-Up Display (HUD). The instrument cluster HUD system projects the frequently used driver information near the front of the vehicle as viewed from the driver's seat. The instrument cluster HUD system displays speed, turn indicators, high beam indicator, low fuel indicator, the check gauge indicator and radio information. Vehicle using a HUD system have a HUD specific windshield and a special instrument cluster

Although there are many similarities across the W-Body Product Line, there are differences in vehicle equipment, including the instrument panel display and the panel-mounted controls. Your Owner's Manual is a good reference for information specific to your vehicle, what the symbols, lights and chimes mean and what you should look for on the instrument cluster.

REMOVAL & INSTALLATION




NOTE
To remove the instrument cluster on these vehicles, the large panel that surrounds the cluster must be removed. The factory calls this panel the instrument panel cluster trim plate and its removal varies from car line, model and vehicle year. Instrument panels and their surrounding pieces use a lot of plastic. The panels are retained by a combination screws, clips and interlocking tabs. Work carefully to avoid cracking or breaking plastic pieces. Don't force anything or the panels could be damaged. In addition, use care when detaching and attaching the electrical connectors. The connector pins are very small and easily damaged.

1997-00 Pontiac

CAUTION
All models covered by this guide are be equipped with a Supplemental Inflatable Restraint (SIR) system, which uses an air bag. Whenever working near any of the SIR components, such as the impact sensors, the air bag module, steering column and instrument panel, disable the SIR, as described in this section.


NOTE
The steering column must be loosened and lowered for this procedure. Center the front wheels and lock the column. This prevents damage to the coil that feeds power to the air bag module in the steering wheel.

  1. Disconnect the negative battery cable. Disable the SIR system, as outlined earlier in this section.
  2.  
  3. Remove the instrument panel cluster trim plate using the following procedure:
    1. Remove the left instrument panel insulator. This is the piece on the lower left side of the instrument panel adjacent to the driver's knee. This requires a Door Trim Pad and Garnish Clip Remover or similar tool.
    2.  
    3. Remove the push-in retainers from the left instrument panel insulator using a trim clip remover.
    4.  
    5. Disconnect the courtesy lamp.
    6.  
    7. Pull the insulator panel forward from the stud at the accelerator pedal and remove the insulator panel from the vehicle.
    8.  

  4.  
  5. Remove the steering column opening filler. This is the panel under the steering column. Use the following procedure:
    1. Remove the screws from the bottom of the steering column opening filler.
    2.  
    3. Pull the filler rearward and upward, unsnapping it from the instrument panel.
    4.  
    5. Detach the connector from the low tire reset switch, if equipped.
    6.  

  6.  



Click image to see an enlarged view

Fig. Removing the instrument panel cluster trim plate-1997-00 Pontiac vehicles



Click image to see an enlarged view

Fig. Front view of the cluster removal and rear view of the wiring harness connectors-1997-00 Pontiac vehicles

  1. Remove the knee bolster bracket. This piece is below the steering column. Use the following procedure:
    1. With the left instrument panel insulator and the steering column opening filler removed, detach the theft alarm shock sensor, if equipped.
    2.  
    3. Remove the screws from the knee bolster bracket at the instrument panel. Also remove the screws from the bracket at the steering column support.
    4.  
    5. Remove the knee bolster bracket from the steering column.
    6.  

  2.  
  3. Lower the steering column, using the following procedure:
    1. Locate and remove the nuts that hold the steering column support bracket to the instrument panel structure.
    2.  
    3. Gently lower the steering column until the steering wheel rests on the driver's seat cushion.
    4.  

  4.  
  5. Grasp the instrument panel trim plate bottom edge on both sides of the steering column and pull to release the retainer clips. Continue pulling to release all of the clips.
  6.  
  7. Detach the electrical connector from the fog lamp switch.
  8.  
  9. Remove the instrument panel cluster trim plate from the instrument panel.
  10.  
  11. Remove the screws from the top of the instrument cluster.
  12.  
  13. Rotate the top of the cluster rearward and, lifting up, disengage the locating pins on the bottom of the cluster from the instrument panel.
  14.  
  15. Detach the electrical connectors from the instrument cluster and remove the instrument cluster from the vehicle.
  16.  
  17. Installation is the reverse of the removal process, noting the following.
    1. Use care to make sure all installation clips are properly located.
    2.  
    3. Do not over-tighten any screws or they could force their way through their holes and the panel will not be held properly. Squeaks and rattles may develop later.
    4.  
    5. Use care when raising the steering column back into position. Tighten the retaining nuts to 18 ft. lbs. (24 Nm).
    6.  

  18.  
  19. Properly arm the SIR system, as outlined in this section.
  20.  

1997-00 Buick

CAUTION
All models covered by this guide are be equipped with a Supplemental Inflatable Restraint (SIR) system, which uses an air bag. Whenever working near any of the SIR components, such as the impact sensors, the air bag module, steering column and instrument panel, disable the SIR, as described in this section.

  1. Disconnect the negative battery cable. Disarm the SIR system, as outlined in this section.
  2.  
  3. Remove the instrument panel cluster trim plate using the following procedure:
    1. Remove the instrument panel access hole covers from the instrument panel using a small flat-bladed tool.
    2.  
    3. Remove the screws from each end of the instrument panel cluster trim plate.
    4.  
    5. Remove the screw(s) from the lower edge of the right side of the trim plate.
    6.  
    7. Open the instrument panel compartment (glove box) door.
    8.  
    9. Pull the right lower trim panel plate from the instrument panel.
    10.  
    11. Pull the steering column tilt lever and tilt the steering column to its lowest position.
    12.  
    13. Grasp the instrument panel cluster trim plate at the right edge and slowly pull, working to the left to release the retainer clips. Remove the instrument panel cluster trim plate from the vehicle.
    14.  

  4.  



Click image to see an enlarged view

Fig. Instrument panel cluster trim plate and related components-1997-00 Buick models



Click image to see an enlarged view

Fig. Front view of instrument cluster removal and rear view of the wiring harness connectors-1997-00 Buick models

  1. Remove the push-pin retainers from the top of the cluster.
  2.  
  3. Rotate the instrument cluster rearward and disengage the locating pins on the bottom of the cluster from the instrument panel. Detach the electrical connectors and remove the instrument cluster from the vehicle.
  4.  
  5. Installation is the reverse of the removal process. Use care to make sure all installation clips are properly located. Do not over-tighten any screws or they could force their way through their holes and the panel will not be held properly. Squeaks and rattles may develop later.
  6.  

1997-00 Chevrolet

CAUTION
All models covered by this guide are be equipped with a Supplemental Inflatable Restraint (SIR) system, which uses an air bag. Whenever working near any of the SIR components, such as the impact sensors, the air bag module, steering column and instrument panel, disable the SIR, as described in this section.

  1. Disconnect the negative battery cable. Disarm the SIR system, as outlined in this section.
  2.  
  3. Remove the instrument panel cluster trim plate using the following procedure:
    1. Move the shift lever from Park to L1 , if equipped with a column shift.
    2.  
    3. Tilt the steering column to its lowest position.
    4.  
    5. Remove the instrument panel cluster trim plate by unsnapping the clips from the instrument panel and lifting the cluster trim panel from the vehicle.
    6.  

  4.  



Click image to see an enlarged view

Fig. Removing the instrument panel cluster trim plate-1997-00 Chevrolet



Click image to see an enlarged view

Fig. Front view of instrument cluster removal and wiring harness connector-1997-00 Chevrolet

  1. Remove the retaining screws from the instrument cluster.
  2.  
  3. Rotate the instrument cluster rearward and disengage the locating pins on the bottom of the cluster from the instrument panel. Detach the electrical connector(s) and remove the instrument cluster from the vehicle.
  4.  
  5. Installation is the reverse of the removal process. Use care to make sure all installation clips are properly located. Do not over-tighten any screws or they could force their way through their holes and the panel will not be held properly. Squeaks and rattles may develop later.
  6.  
  7. Properly arm the SIR system, as outlined in this section.
  8.  

1997-00 Oldsmobile

CAUTION
All models covered by this guide are be equipped with a Supplemental Inflatable Restraint (SIR) system, which uses an air bag. Whenever working near any of the SIR components, such as the impact sensors, the air bag module, steering column and instrument panel, disable the SIR, as described in this section.

1997 OLDSMOBILE CUTLASS SUPREME

NOTE
This is an lengthy procedure and involves removing the front floor console, among other trim parts.

  1. Disconnect the negative battery cable. Disarm the SIR system, as outlined in this section.
  2.  
  3. Remove the front floor console, if equipped. Use the following procedure:
    1. Remove the transaxle shift handle. Look for a clip just under the top of the T handle. This is a horseshoe-shaped clip that retains the shift handle to the shift lever. Carefully pry the clip out with a small flat-blade tool.
    2.  
    3. Remove the screws from the rear compartment of the front floor console.
    4.  
    5. Remove the console transaxle shift opening trim by prying with a small flat-blade tool. Pry gently at the two rear tabs to remove the trim.
    6.  
    7. Remove the front console arm rest by raising it and removing the front console ashtray and steel flame plate. Loosen the two screws inside the ashtray area. Pry the sides of the base apart and remove the armrest at the rear hinge area, from between the base halves.
    8.  
    9. Disconnect the front console wiring and detach the electrical connectors.
    10.  
    11. Remove the screws from the front and rear of the console and remove the console from the vehicle.
    12.  

  4.  



Click image to see an enlarged view

Fig. Removing the instrument panel cluster trim plate-1997 Oldsmobile Cutlass Supreme



Click image to see an enlarged view

Fig. Front view of instrument cluster removal-1997 Oldsmobile Cutlass Supreme

  1. Remove the instrument panel accessory trim plate. This piece typically surrounds the heater & A/C control panel and/or the radio. Locate and remove the screws from the lower instrument panel accessory trim plate and pull the plate downward to release the retainers. Then rotate the panel rearward and upwards to release the tabs at the top edge.
  2.  
  3. Remove the heater & A/C control panel. Use the procedure found earlier in this section.
  4.  
  5. Set the parking brake.
  6.  
  7. Move the shift lever from Park to L1, if equipped with a column shift.
  8.  
  9. Tilt the steering column to its lowest position and remove the tilt lever by rocking back and forth while pulling it from the steering column.
  10.  
  11. Insert a small flat-bladed tool into the slot in the instrument panel cluster trim plate directly below the headlamp switch. Push the tool handle down, releasing the plastic tab, then pull the trim plate rearward.
  12.  
  13. Grasp the instrument cluster trim plate at the right and below the right center A/C outlet and carefully pull to release the clip.
  14.  
  15. Remove the screw from the steering column wrap seal (below the steering column).
  16.  
  17. Grasp the instrument cluster trim plate bottom edge on both sides of the steering column and pull to release the two additional steel clips.
  18.  
  19. Detach the electrical connector to the cigarette lighter.
  20.  
  21. Insert a small flat-bladed tool into the slot at the left upper corner and raise the handle. Pull rearward at the center of the top edge to disengage the plastic clip on the trim plate. Remove the instrument cluster trim plate from the instrument panel.
  22.  
  23. Remove the two push-in retainers from the top of the instrument panel cluster.
  24.  
  25. Rotate the instrument cluster rearward and disengage the locating pins on the bottom of the cluster from the instrument panel. Detach the electrical connector(s) and remove the instrument cluster from the vehicle.
  26.  
  27. Installation is the reverse of the removal process, noting the following. Make sure the horseshoe-shaped clip is properly installed in the floor shift handle, if equipped. It should seat all the way in, not protruding from the shift handle. Use care to make sure all installation clips are properly located. Do not over-tighten any screws or they could force their way through their holes and the panel will not be held properly. Squeaks and rattles may develop later.
  28.  
  29. Properly arm the SIR system, as outlined earlier in this section.
  30.  

1998-00 OLDSMOBILE INTRIGUE
  1. Disconnect the negative battery cable. Disarm the SIR system, as outlined in this section.
  2.  
  3. Remove the instrument panel cluster trim plate using the following procedure:
    1. Remove the left side instrument panel insulator.
    2.  
    3. Remove the steering column opening filler panel.
    4.  
    5. Remove the screws retaining the instrument panel cluster trim plate to the trim pad.
    6.  
    7. Grasp the cluster trim plate along the bottom edge and carefully pull to release the retainers.
    8.  
    9. Detach the electrical connector from the trip odometer and reset switch.
    10.  
    11. Using a small flat-blade tool, carefully release the switch retainers and remove the switch.
    12.  
    13. Remove the instrument cluster trim plate.
    14.  

  4.  



Click image to see an enlarged view

Fig. View of removing the instrument panel cluster trim panel (top) and instrument cluster (bottom)

  1. Remove the screws retaining the instrument cluster.
  2.  
  3. Detach the electrical connector and remove the instrument cluster from the vehicle.
  4.  
  5. Installation is the reverse of the removal process. Use care to make sure all installation clips are properly located. Do not over-tighten any screws or they could force their way through their holes and the panel will not be held properly. Squeaks and rattles may develop later.
  6.  
  7. Properly arm the SIR system, as outlined in this section.
  8.  

 
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