Instrument Panel, Gauges and Warning Indicators: Technical Service Bulletins

• Customer Interest
  • ECM - Driveability Concerns/Erratic Warning Lamps
    • Overview
    • Conditon and Cause
    • Correction:
      • A.Loss of Power or Ground to the ECM
      • B.Large Voltage Variations On Vehicle Power and Ground Wires
      • C.Large Voltage Variations On ECM Connected Signal Wires
  • No Charge Telltale - Glows Dimly Under Heavy Load
  • Instruments - Telltale Lights/Digital Displays Erratic
  • Instruments - Fuel Gauge Reads 'E' & Fuse Blown
  • Speedometer Needle - Flutter or Noise
  • Speedometer Needle - Flutters at 30-50 MPH
  • Instrument Cluster - Unwanted Metric Display
  • Instrument Panel - Upper Surface Reflection
• By Symptom
  • Customer Interest
    • ECM - Driveability Concerns/Erratic Warning Lamps
      • Overview
      • Conditon and Cause
      • Correction:
        • A.Loss of Power or Ground to the ECM
        • B.Large Voltage Variations On Vehicle Power and Ground Wires
        • C.Large Voltage Variations On ECM Connected Signal Wires
    • No Charge Telltale - Glows Dimly Under Heavy Load
    • Instruments - Telltale Lights/Digital Displays Erratic
    • Instruments - Fuel Gauge Reads 'E' & Fuse Blown
    • Speedometer Needle - Flutter or Noise
    • Speedometer Needle - Flutters at 30-50 MPH
    • Instrument Cluster - Unwanted Metric Display
    • Instrument Panel - Upper Surface Reflection
  • Erratic Operation
    • Speedometer Needle - Flutter or Noise
    • Speedometer Needle - Flutters at 30-50 MPH
  • False instrument warning light/gauges
    • Instruments - Fuel Gauge Reads 'E' & Fuse Blown
    • Instrument Cluster - Unwanted Metric Display
  • Inoperative
    • Instruments - Fuel Gauge Reads 'E' & Fuse Blown
  • Noise
    • Speedometer Needle - Flutter or Noise
• All Technical Service Bulletins
  • Electrical - Instrument Panel And General Wiring Repair
  • ECM - Driveability Concerns/Erratic Warning Lamps
    • Overview
    • Conditon and Cause
    • Correction:
      • A.Loss of Power or Ground to the ECM
      • B.Large Voltage Variations On Vehicle Power and Ground Wires
      • C.Large Voltage Variations On ECM Connected Signal Wires
  • Engine/Fuel - Fuel Injector and Choke Light Service
  • Electrical - Wire Probing Device
  • No Charge Telltale - Glows Dimly Under Heavy Load
  • Instruments - Telltale Lights/Digital Displays Erratic
  • IP Dimmer Control - Proper Setting
  • Instruments - Fuel Gauge Reads 'E' & Fuse Blown
  • Speedometer Needle - Flutter or Noise
  • Speedometer Needle - Flutters at 30-50 MPH
  • Instrument Cluster - Unwanted Metric Display
  • Instrument Panel - Upper Surface Reflection
  • Instruments - Reduced PRNDL Display Visibility
  • Fuel System - GM Fuel System Treatment PLUS(R) Info.
  • Tires - Information On Proper Tire Pressure
  • Interior - Cleaning Instrument Panel, Interior Trim