Important: The following steps must be completed before using the symptom tables.
• | There are no DTCs set. |
• | The control modules can communicate via the serial data link. |
• | Inspect for aftermarket devices which could affect the operation of the Instrument Cluster or Audible Warning Systems. Refer to Checking Aftermarket Accessories in Wiring Systems. |
• | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. |
• | Inspect for proper fluid level. |
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
• | Service Indicator Always On in Transfer Case - NVG 246-NP8 |
• | Service Indicator Inoperativein Transfer Case - NVG 246-NP8 |
• | Brake Warning Indicator Always On in Hydraulic Brakes |
• | Brake Warning Indicator Inoperative in Hydraulic Brakes |
• | ABS Indicator Always On in Antilock Brake System |
• | ABS Indicator Inoperative in Antilock Brake System |
• | Traction Off Indicator Always On in Antilock Brake System |
• | Traction Off Indicator Inoperative in Antilock Brake System |
• | Engine Overheated Indicator Always On in Engine Cooling |
• | Engine Coolant Temperature Indicator Always On in Engine Cooling |
• | Low Engine Coolant Indicator Always On in Engine Cooling |
• | Charge Indicator Always On in Engine Electrical |
• | Charge Indicator Inoperative in Engine Electrical |
• | Malfunction Indicator Lamp (MIL) Inoperative in Engine Controls - 4.8L, 5.3L, and 6.0L |
• | Malfunction Indicator Lamp (MIL) Always On in Engine Controls - 4.8L, 5.3L, and 6.0L |
• | Tow/Haul Switch/Indicator Always On or Inoperative in Automatic Transmission - 4L60-E |
• | Tow/Haul Switch/Indicator Always On or Inoperative in Automatic Transmission - 4L80-E |
• | Low Washer Fluid Indicator Malfunction in Wipers/Washer Systems |
• | High Beam Indicator Always Onin Lighting Systems |
• | High Beam Indicator Inoperative in Lighting Systems |
• | Turn Signal Lamps and/or Indicators Always On or Flashing in Lighting Systems |
• | Turn Signal Lamps and/or Indicators Inoperative in Lighting Systems |
• | Cruise Control Indicator Always On in Cruise Control |
• | Cruise Control Indicator Inoperative in Cruise Control |
• | Security Indicator Always On or Flashing in Theft Deterrent |
• | Security Indicator Inoperative in Theft Deterrent |
• | Interior Backlighting Does Not Dim in Lighting Systems |
• | Interior Backlighting Inoperative in Lighting Systems |
Driver Information Center (DIC) Switch Inoperative