Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 609 (LIGHTING SYSTEMS)
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Section 609 (Lighting Systems)
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Section 609 (Lighting Systems)
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Lighting Systems
- Diagnostic System Check - Lighting Systems
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC B1354: Courtesy Lamps Control Circuit Open
- DTC B1397: Dimming Reference Voltage Circuit Low
- DTC B1398: Dimming Reference Voltage Circuit High
- DTC B1482: Supply Voltage Circuit Low
- DTC B2532: Front Foglamps Control Circuit Low
- DTC B2533: Front Foglamps Control Circuit High
- DTC B2552: Backup Lamps Control Circuit Low
- DTC B2553: Backup Lamps Control Circuit High
- DTC B2577: Headlamp Control Circuit Low
- DTC B2578: Headlamp Control Circuit High
- DTC B2587: Parklamp Control Circuit Low
- DTC B2588: Parklamp Control Circuit High
- DTC B2602: Daytime Running Lamp Control Circuit Low
- DTC B2603: Daytime Running Lamp Control Circuit High
- DTC B2613: Passenger Compartment Dimming Input Circuit High
- DTC B2617: Passenger Compartment Dimming Circuit Low
- DTC B2618: Passenger Compartment Dimming Circuit High
- DTC B2627: Courtesy Lamps Output Circuit Low
- DTC B2628: Display Dimming Pulse Width Modulation (PWM) Output Circuit High
- DTC B2645: Ambient Light Sensor Circuit
- DTC B2647: Ambient Light Sensor Circuit Low
- DTC B2648: Ambient Light Sensor Circuit High
- DTC B2665: Parklamp Switch Circuit High
- DTC B2742: Front Fog Lamp Switch Circuit Low
- DTC B3840: Parklamp Signal Circuit Low
- DTC B3841: Parklamp Signal Circuit High
- DTC B3857: Headlamp High Beam Signal Circuit
- DTC P0504: Brake Switch Circuit 1-2 Correlation
- Symptoms - Lighting Systems
- Backup Lamps Always On
- Backup Lamps Inoperative
- Courtesy Lamps Always On
- Courtesy Lamps Inoperative
- Daytime Running Lamps (DRL) Inoperative
- Fog Lamps Always On
- Fog Lamps Inoperative
- Hazard Lamps Always On
- Hazard Lamps Inoperative
- Headlamps Always On - Low or High Beam
- Headlamps Inoperative - High Beams
- Headlamps Inoperative - Low Beams
- Headlamps Inoperative - Low and High Beams
- High Beam Indicator Inoperative
- Illuminated Entry Lamps Inoperative
- Interior Backlighting Inoperative
- Interior Lamps Off Switch Inoperative
- Park Lamps Always On
- Park Lamps Inoperative
- Park Lamp Out Indicator Inoperative
- Park Lamps Inoperative - Output at Trailer/Upfitter Connector
- Reading Lamp(s) Inoperative
- Stop Lamps Always On
- Stop Lamps Inoperative
- Turn Signal Lamps and/or Indicators Inoperative
- Turn Signal Lamps Inoperative - Output at Trailer/Upfitter Connector
- Repair Instructions
- Stop Lamp Switch Adjustment
- Stop Lamp Switch Replacement
- Headlamp Switch Replacement
- Fog Lamp Switch Replacement - Front
- Daytime Running Lamps (DRL) Ambient Light Sensor Replacement
- Hazard and Turn Signal Flasher Replacement
- Console Lamp Replacement
- Courtesy Lamp Replacement - Instrument Panel - Left
- Courtesy Lamp Replacement - Instrument Panel - Right
- Instrument Panel (I/P) Compartment Lamp Switch Replacement
- Vanity Mirror Lamp Bulb Replacement
- Headlamp Assembly or Headlamp Bulb Replacement (Aztek)
- Headlamp Assembly or Headlamp Bulb Replacement (Rendezvous)
- Headlamp Aiming (Aztek)
- Headlamp Aiming (Rendezvous)
- Fog Lamp Replacement - Front (Aztek)
- Fog Lamp Replacement - Front (Rendezvous)
- Fog Lamp Aiming Procedure
- Park/Turn Signal Lamp Replacement (Aztek)
- Park/Turn Signal Lamp Replacement (Rendezvous)
- High Mounted Stop Lamp Replacement (Aztek)
- High Mounted Stop Lamp Replacement (Rendezvous)
- Cargo Lamp Replacement
- Backup Lamp Replacement
- License Lamp Replacement (Aztek)
- License Lamp Replacement (Rendezvous)
- Tail Lamp Assembly and /or Backup, Sidemarker, Stop, Turn Signal Bulb Replacement (Aztek)
- Tail Lamp Assembly and /or Backup, Sidemarker, Stop, Turn Signal Bulb Replacement (Rendezvous)
- Roof Side Rail Lamp Replacement
- Description and Operation
- Exterior Lighting Systems Description and Operation
- Interior Lighting Systems Description and Operation
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.