- Symptoms - Displays and Gages

SYMPTOMS - DISPLAYS AND GAGES

IMPORTANT: The following steps must be completed before using the symptom tables.

1. Perform the Diagnostic System Check - Vehicle before using the Symptom Tables in order to verify that all of the following are true:
- There are no DTCs set.
- The control modules can communicate via the serial data link. Initial Inspection and Diagnostic Overview
2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
- Instrument Cluster Description and Operation
- Indicator/Warning Message Description and Operation
- Driver Information Center (DIC) Description and Operation
- Audible Warnings Description and Operation

Visual/Physical Inspection
- Inspect for aftermarket devices which could affect the operation of the Instrument Cluster or Audible Warning Systems.
- Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
- Inspect for proper fluid level.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

Gages and Odometer
- Instrument Cluster Inoperative
- Engine Coolant Temperature Gage Inaccurate or Inoperative
- Fuel Gage Inaccurate or Inoperative (Single Tank) Fuel Gage Inaccurate or Inoperative (Dual Tanks)
- Hourmeter Inaccurate or Inoperative
- Odometer Trip/Reset Switch Inoperative
- Speedometer and/or Odometer Inaccurate or Inoperative
- Tachometer Inaccurate or Inoperative

Indicators
- Change Engine Oil Indicator Always On
- Door Ajar Indicator Malfunction
- Engine Oil Pressure Indicator Always On
- Low Engine Oil Level Indicator Always On
- Mirror Compass Display Inoperative or Inaccurate
- Mirrors - Temperature Display Inaccurate
- Mirrors - Temperature Displays SC or OC
- Liftgate/Liftgate Window Ajar Indicator Malfunction
- Service Indicator Always On for the NVG 246-NP8 transfer case
- Service Indicator Inoperative for the NVG 246-NP8 transfer case
- Brake Warning Indicator Always On
- Brake Warning Indicator Inoperative
- ABS Indicator Always On
- ABS Indicator Inoperative
- Stability System Caution Indicator Always On
- Stability System Caution Indicator Inoperative
- Low Tire Pressure Indicator Always On
- Low Tire Pressure Indicator Inoperative
- Engine Coolant Temperature Gauge Inaccurate or Inoperative
- Charge Indicator Always On
- Charge Indicator Inoperative
- Malfunction Indicator Lamp (MIL) Diagnosis for the 4.8L, 5.3L, 6.0L, and 6.2L engines
- Tow/Haul Switch/Indicator Always On or Inoperative for the 4L80-E automatic transmission
- Low Washer Fluid Indicator Malfunction
- Fog Lamp Indicator Inoperative
- Rear Fog Lamp Indicator Inoperative
- High Beam Indicator Always On
- High Beam Indicator Inoperative
- Turn Signal Lamps and/or Indicators Always On or Flashing
- Turn Signal Lamps and/or Indicators Inoperative
- Air Bag Indicator Circuit Malfunction
- Passenger Presence System Indicator Circuit Malfunction
- Seat Belt Indicator Circuit Malfunction - Driver
- Seat Belt Indicator Circuit Malfunction - Passenger
- Security Indicator Malfunction

Instrument Cluster Dimming
- Interior Backlighting Does Not Dim
- Interior Backlighting Inoperative

Driver Information Center (DIC)
Driver Information Center (DIC) Switch(es) Inoperative

Audible Warnings
- Chime Always On
- Chime Inoperative