The daytime running lights are prone to burning out. Our technicians tell us that the light sockets may show signs of heat damage but usually are OK. Always be sure to use the correct replacement bulb for the best life expectancy. The new bulb recommendation for 2003 models is #4114K (trade number).
Daytime Running Lights are Prone to Burning Out on Chevrolet Silverado SS
Average mileage: 75,500 (75,000–76,000)
7 people reported this problem
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2003 Chevrolet Silverado SS 76,000 mi, Visitor
running lights not working