where is the headlight relay for a yukon denali?

Question

1999 GMC Denali

Answer 1

be sure to check the headlight day-night switch (like automatic lights at dusk) for off on the control and look at the headlamp bulbs to be sure that they are good ---- then procede to the fuse box under the hood and also look at the fuses in the panel to the left of the speedometer when the drivers door is open ..... have you had any added stuff (stereo....alarm etc)) The nature of the GM vehicle is you do not jack with the factory unlocker button ---so you know ... Pull the head light covers by lifting the two rods on the top of light lens and the turn the lamp holders and don't touch the glass part of the lite bulb... good luck wc

Answer 2

under the hood on the right side if your looking at it .under the big black pane pull it up and it will show you a diagram under the lid