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 MANUALSCHEVROLET2025TRAILBLAZER RS, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTEXTERIOR LIGHTSLIGHTING SYSTEM
2025 Chevrolet Trailblazer RS, 4WD
Lighting System
2025 Chevrolet Trailblazer RS, 4WDSECTION Lighting System
- Specifications
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- Lighting Component Replacement Reference
- DTC B1395
- DTC B1480
- DTC B2545
- DTC B2570
- DTC B257A
- DTC B2580
- DTC B2585 (- TLL)
- DTC B2585 or B3867 (TLL)
- DTC B260B or B260C
- DTC B2610
- DTC B2615
- DTC B2625
- DTC B2645
- DTC B323E
- DTC B3596
- DTC B3600
- DTC B3650
- DTC B3806
- DTC B3881 or B3882
- DTC B3883
- DTC B3884
- DTC B3948 or B3949
- DTC B3950 or B3951
- DTC C0277 or C0890
- DTC C0297
- DTC P0703
- DTC P2299
- Symptoms - Lighting
- Backup Lamps Malfunction
- Courtesy Lamps Malfunction
- Daytime Running Lamps Malfunction
- Dome Lamps Malfunction
- Hands - Free Liftgate Sensor Lamp Malfunction
- Hazard Lamps Malfunction
- Headlamps Malfunction
- Headlamp Leveling Malfunction
- Interior Backlighting Malfunction
- Park, License, and/or Tail Lamps Malfunction
- Rear Compartment Lamp Malfunction
- Stop Lamps Malfunction
- Turn Signal Lamps and/or Indicators Malfunction
- Repair Instructions
- Brake Pedal Position Sensor Calibration
- Brake Pedal Position Sensor Replacement
- Ambient Light and Security Indicator Sensor Replacement
- Headlamp Switch Replacement
- Hazard Warning Switch Replacement
- Center Courtesy Lamp Lens Replacement
- Center Courtesy Lamp Bulb Replacement
- Center Reading and Courtesy Lamp Lens Replacement
- Center Reading and Courtesy Lamp Bulb Replacement
- Roof Rail Rear Seat Position Reading and Courtesy Lamp Replacement
- Rear Seat Position Center Courtesy Lamp Replacement
- Outside Rearview Mirror Turn Signal Lamp Replacement
- Front Headlamp Replacement
- Front Headlamp Aiming
- Front Side Marker Lamp Replacement
- Turn Bulb Replacement (- UGE)
- High Mount Stop Lamp Wiring Harness Replacement
- High Mount Stop Lamp Replacement
- Rear Body Structure Stop Lamp Replacement
- Backup Bulb Replacement (- UGE)
- Backup Bulb Replacement (UGE)
- Rear License Plate Lamp Module Replacement
- Rear Combination Lamp Replacement
- Tail Bulb Replacement (- UGE)
- Rear Closure Hands Free Lamp Replacement
- Stop Bulb Replacement (- UGE)
- Rear Fascia Lower Signal Lamp Replacement (1RS)
- Rear Fascia Lower Signal Lamp Replacement (- 1RS)
- Rear Compartment Courtesy Lamp Replacement
- Rear Compartment Courtesy Lamp Bulb Replacement
- Headlamp Desiccant Retainer Replacement
- Description and Operation
- Exterior Lighting Systems Description and Operation
- Exterior Lamps
- Low Beam Headlamps
- High Beam Headlamps
- Automatic High Beam Assist (IntelliBeam)
- Daytime Running Lamps (DRL)
- Flash to Pass (FTP)
- Front Fog Lamps
- Rear Fog Lamps
- Hazard Lamps
- Park, Tail, and License Lamps
- Stop Lamps
- Turn Signal Lamps
- Backup Lamps
- Hands-Free Liftgate Sensor Lamp (TC2)
- Battery Run Down Protection/Inadvertent Power
- Interior Lighting Systems Description and Operation
- Exterior Lighting Systems Description and Operation
RENDER: 1.0x
NO RELATED
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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.