electrical
Turn Signal Bulb - Front
for 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
Difficulty
Easy
Time
12 min
Tools
2
Steps
6
✓Fact-checked. Built from OLP's spec database, then independently fact-checked line by line with every correction applied. Master-tech sign-off by Chris Hackleman is queued. Cross-check torque values against the factory manual, and stop if anything looks unsafe. How our data is made.
Replace the front turn signal bulb by accessing the headlight assembly from the engine compartment and removing the bulb socket.
Warnings
⚠Allow headlight assembly to cool completely before servicing to prevent burns from hot bulbs or housing
ℹ️Do not touch the glass portion of halogen bulbs with bare fingers as skin oils can cause premature failure
ℹ️This is an electric vehicle - no engine components will be hot unless recently charged or driven
Tools required
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Parts
- Front turn signal bulb (amber) × 1 — 7440A or 7440NA amber bulb
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Preparation
- Ensure vehicle is parked on level ground with parking brake applied
- Turn off all lights and remove key fob from vehicle
- Allow headlight assembly to cool for at least 15 minutes if recently used
- Open hood and secure with prop rod
Procedure
- 1Locate the turn signal bulb socketFrom the engine compartment, locate the headlight assembly on the affected side. The front turn signal socket is positioned at the outer corner of the headlight assembly, typically below the headlight bulb. It will have a gray or black plastic socket with wiring harness attached.
- 2Remove the bulb socketGrasp the turn signal bulb socket firmly and rotate it counterclockwise approximately 1/4 turn (90 degrees) until it releases from the headlight assembly. Pull the socket straight out from the housing. Do not pull on the wiring harness.
- 3Remove the failed bulbWith the socket removed, press the bulb gently into the socket and rotate counterclockwise to release it from the bayonet mount. Pull the bulb straight out of the socket. Inspect the socket for any corrosion, melting, or damage.
- 4Install the new bulbWearing gloves to avoid touching the glass, align the new amber turn signal bulb pins with the socket slots. Press the bulb gently into the socket and rotate clockwise until it locks into place. Ensure the bulb is fully seated and secure.
- 5Reinstall the socket assemblyInsert the bulb socket back into the headlight assembly opening, aligning the tabs on the socket with the slots in the housing. Push the socket in fully and rotate clockwise approximately 1/4 turn until it locks into place. Tug gently to verify it is secure.
- 6Test turn signal operationTurn the vehicle to the ON position (do not start). Activate the turn signal on the repaired side and verify the bulb illuminates with proper amber color and flashing rate. Check both front and side marker operation.
Reassembly
- Ensure bulb socket is fully locked into headlight assembly with no gaps
- Verify wiring harness is not pinched or touching hot components
- Close hood securely
Verification
- Turn on the ignition and activate turn signals in both directions to confirm proper operation
- Walk around vehicle to verify correct flash rate (not hyper-flashing) on both front and side markers
- Verify turn signal indicator on instrument cluster flashes at normal rate
- Check that hazard lights function properly with new bulb installed
Related trouble codes on this vehicle
Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.
P0322Ignition/Distributor Engine Speed Input Circuit No SignalP0370Timing Reference High Resolution Signal A MalfunctionP0371Timing Reference High Resolution Signal A Too Many PulsesP0528Fan Speed Sensor Circuit No SignalP0565Cruise Control On Signal MalfunctionP0566Cruise Control Off Signal MalfunctionP0570Cruise Control Accel Signal MalfunctionP0727Engine Speed Input Circuit No SignalP0793Intermediate Shaft Speed Sensor Circuit No SignalP0856Traction Control Input SignalP0857Traction Control Input Signal Range/PerformanceP0880TCM Power Input Signal
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