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Service bulletin 14203

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10248738
Published by NHTSA2024-01-16
Manufacturer's number14203
Manufacturer's date2014-12-01
NHTSA componentEXTERIOR LIGHTING:HEADLIGHTS

NHTSA's summary

Low-Beam Headlamps Inoperative

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Lighting, Headlights

Vehicles listed
CHEVROLET CORVETTE2008, 2009, 2010, 2011, 2012, 2013

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
02-08-42-001I2017-08-31. Service bulletin. This informational bulletin provides an out line on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage and what should be considered warranty replacement and not
01-08-42-001K2017-08-31. Service bulletin. This informational bulletin provides information on exterior lamp condinsation and replacement guidelines
142032017-02-02. Service bulletin. 14203 - CUSTOMER SATISFACTION PROGRAM. ON CERTAIN VEHICLES, WHEN THE ENGINE IS WARM, THE UNDERHOOD BUSSED ELECTRICAL CENTER (UBEC) HOUSING WILL EXPAND, CAUSING THE HEADLAMP LOW-BEAM RELAY CONTROL CIRCUIT ROUTED WIRE TO BEND SLIGHTLY. AFTER THE WIRE IS REPEATEDLY BENT, IT CAN FRACTURE AND SEPARATE. WHEN THIS OCCURS, THE LOW-BEAM HEADLAMPS WILL NOT ILLUMINATE. AS THE UBEC HOUSING COOLS AND CONTRACTS, THE LOW-BEAM HEADLAMP FUNCTION MAY RETURN. THIS CONDITION DOES NOT AFFECT THE HIGH-BEAM HEADLAMPS, MARKER LAMPS, TURN SIGNALS, DAYTIME RUNNING LAMPS OR FOG LAMPS. LOSS OF LOW BEAM HEADLAMPS WHEN THEY ARE REQUIRED COULD REDUCE THE DRIVER’S VISIBILITY, INCREASING THE RISK OF A CRASH. DEALERS ARE TO INSTALL A JUMPER WIRE.
142032016-05-23. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PB-142032015-01-13. Service bulletin. CHEVROLET: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. UNDERHOOD BUSSED ELECTRICAL CENTER (UBEC) HOUSING HAS EXPAND AFTER ENGINE WARMED UP CAUSING LOW-BEAM HEADLAMP RELAY CONTROL CIRCUIT ROUTED WIRE TO BEND SLIGHTLY AND CAN FRACTURE AND SEPARATE AFTER REPEATEDLY BENDING AND NO ILLUMINATION OF LOW BEAM HEADLAMP. MODEL 2008-2013 CORVETTE. *PE
46242007-12-10. Service bulletin. FINE CRACKS OR CRAZING ON HEAD LAMP LENS. *NJ