This 2002 Chevrolet Tahoe came in with the complaint that the right daytime running light did not work. The repair starts with removing the headlight assembly retaining pins. They both rotate forward and lift straight up.
With the pins removed the headlight assembly will detach from the vehicle. This allows access to the rear of the assembly where the harnesses can be removed.
There is a latch slightly left of center in the picture below that has to be depressed so that the DRL assembly can be removed. I normally use a long screwdriver to depress the latch.
Although the plastic is discolored from heat and looks bad that is not the real problem.
With the bulb removed I rub my thumb and or thumbnail along the edges of the wire leads on the bulb itself. If there is anything rough felt the bulb and the socket have to be replaced. The rough feel is caused by a poor connection between the bulb lead and the mating terminal in the socket. If only the bulb is replaced the problem will return within days to months. If you do not remove it all it will come back.
To replace the socket, I remove the tape and pull back the split loom to expose the wires.
Then cut and splice one wire at a time. The new wires are both white so it is important to maintain the correct orientation of the wires to the socket.
Notice that I use uninsulated splicing terminals and heat shrink tubing. They are supplied with the socket when purchased here. Also note that I stagger the spliced connections.
That allows the wiring to be properly installed back into the split loom to make a nice, neat repair.
Notice the two pegs to the right of the socket and the lip at the far right of the assembly. The lip fits under a mating surface in the grill and the two pegs fit into two mating slots. This works as a hinge retainer for the inside edge of the assembly. When properly installed the outer latch as shown earlier snaps back into position to secure the lamp assembly.
