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Chevrolet TSB #14203
2009 Chevrolet Corvette
TSB Document:
Affected Component: EXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH
- Summary
- 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 DRIVERÂ’S VISIBILITY, INCREASING THE RISK OF A CRASH. DEALERS ARE TO INSTALL A JUMPER WIRE.
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