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 1999-2003 models is #4114K (trade number).Google+
Car Problem Reports
GMC Sierra 1500 Daytime Running Lights Are Prone to Burning Out
GMC Sierra 1500 Problem
Average Mileage: 102,927 mi (27,000 mi - 228,000 mi)
Visitor, 2001 GMC Sierra 1500, 80,000 mi
My running light always go out it does not burn out sometimes it stays on and sometimes is goes off if you wiggle it a little it goes on but as soon as you hit a bump in the road it goes off. I see so many trucks that only have one running light on that I can't count them any more. They are GMC and Chevy. What can I do???????
Visitor, 2004 GMC Sierra 1500
Went to replace a burned out daytime running light and discovered that the sockets for both of them are blackened and charred. Looking into replacing the sockets and trying LEDs.
Visitor, 2007 GMC Sierra 1500
Have had to replace both running lights at less than 50,000.The worst vechile purchase I have ever made.
Visitor, 2004 GMC Sierra 1500, 70,000 mi
Just same problem as everyone else. But as normal with GM when you contact them with a vehicle concern
they claim it is operating within GM specs. Well, do I need to explain how i feel about there specs.
Was always a GM person since hitting the road in 1969. When its time for my pick to have a new owner
there will never be another gm vehicle in my garage due to their loose operating specs.
Visitor, 2002 GMC Sierra 1500, 150,000 mi
socket adaptor burn out.
Visitor, 2003 GMC Sierra 1500, 122,000 mi
I bought this truck used with 121000 miles on it. In 1000 miles I have had to replace the light once and now at 122000 need to replace it again. This is such a common problem that you would think GMC would look into it and come up with some kind of fix for the issue.
Actual mileage is actually numberous various mileages due to the fact that I have replaced bulbs many, many times, particularly on the passenger side. Very frustrating.
Passenger side driving light was out. Sockets on both sides are burnt. When new bulb was installed it would not work at first. Had to remove socket assembly then reinstall it, jiggled bulb some and then it stayed on. Bulbs seem to burn very bright and are very hot. Has me concerned so I am keeping an eye on both sides for further deterioration of socket. I don't think the original bulb burned out as the elements inside bulb were ok. More like a socket problem.
day time running light blow out . i have no idea how to fix it
Visitor, 2001 GMC Sierra 1500, 228,000 mi
Went to replace the burnt out bulb and the socks disintegrated - replace both and am now using LED light bulbs