C0095moderate severityChassis
Brake Lamp Switch Circuit
on 2004 GMC Yukon 5.3L V8 Vortec · RWD
What this code means
Malfunction in the brake lamp switch circuit detected by the ABS or stability control module.
Symptoms
- ABS light on
- Cruise control inoperative
- Brake lights stuck on or not illuminating
- Shift interlock may not release
Common causes
- Brake light switch out of adjustment
- Faulty brake light switch
- Wiring damage
- Blown brake light fuse
Diagnostic steps
- Test brake light switch operation
- Check brake light fuse
- Inspect brake light switch adjustment at pedal
- Test circuit continuity
- Check for power and ground at switch
Repair notes
Adjust or replace brake light switch. This switch serves multiple systems.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0026
RF Wheel Speed Sensor Circuit Intermittent
C0027
LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0036
Left Front Wheel Speed Signal Erratic