GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 CTS 🢒 Engine 🢒 Engine Controls - 3.6L (LY7) 🢒 Symptoms - Instrument Panel, Gages and Console

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

  1. Before using the symptom diagnostic tables, perform the following tests in order to determine that there are no DTCs set, and that the control modules can communicate via the serial data link:
    2. •  Diagnostic System Check - Instrument Cluster
    •  Diagnostic System Check - Driver Information Systems
    •  Diagnostic System Check - Audible Warnings
  2. Review the system operation in order to understand the system functions. Refer to the following description and operations:
    3. •  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 can affect the operation of the instrument panel cluster or the audible warnings system. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • Inspect the accessible system components or the visible system components for obvious damage or for obvious conditions which can cause the symptom.
    • Inspect for the proper fluid levels.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

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

Gages and Odometer

    •  Instrument Cluster Gages Inoperative
    •  Fuel Gage Inaccurate or Inoperative

Indicators

    •  ABS Indicator Always On in Antilock Brake System
    •  ABS Indicator Inoperative in Antilock Brake System
    •  Air Bag Indicator Circuit Malfunction in SIR
    •  Brake Warning Indicator Always On in Hydraulic Brakes
    •  Brake Warning Indicator Inoperative in Hydraulic Brakes
    •  Change Engine Oil Indicator Always On
    •  Change Engine Oil Indicator Inoperative
    •  Door Ajar Indicator Malfunction in Doors
    •  Engine Oil Pressure Indicator Always On
    •  Fog Lamp Indicator Always On in Lighting Systems
    •  Rear Fog Lamp Indicator Always On in Lighting Systems
    •  Fog Lamp Indicator Inoperative in Lighting Systems
    •  Rear Fog Lamp Indicator Inoperative in Lighting Systems
    •  Headlamps Suggested Message On in Daylight Conditions in Lighting Systems
    •  High Beam Indicator Always On in Lighting Systems
    •  High Beam Indicator Inoperative in Lighting Systems
    •  Lights On Indicator Always On in Lighting Systems
    •  Lights On Indicator Inoperative in Lighting Systems
    •  Low Engine Coolant Indicator Always On in Engine Cooling
    •  Low Washer Fluid Indicator Malfunction in Wiper/Washer Systems
    •  MPH (Km/h) Indicator Inoperative
    •  Seat Belt Indicator Circuit Malfunction in Seat Belts
    •  Security Indicator Inoperative in Theft Deterrent
    •  Sport Mode Switch/Indicator Always On or Inoperative in Automatic Transmission -- 5L40-E
    •  Turn Signal Lamps and/or Indicators Always On or Flashing in Lighting Systems
    •  Turn Signal Lamps and/or Indicators Inoperative in Lighting Systems
    •  Traction Control Indicator Always On in Antilock Brake System
    •  Traction Control Indicator Inoperative in Antilock Brake System
    •  Traction Off Indicator Always On in Antilock Brake System
    •  Traction Off Indicator Inoperative in Antilock Brake System
    •  Trunk Ajar Indicator Always On in Body Rear End
    •  Trunk Ajar Indicator Inoperative in Body Rear End
    •  Winter Mode Switch/Indicator Always On or Inoperative in Automatic Transmission -- 5L40-E

Driver Information Center

Driver Information Center (DIC) Switch Inoperative

Audible Warnings

    •  Chime Always On
    •  Chime Inoperative