1999 GMC Suburban 1500 Q&A

1999 GMC Suburban 1500 Question: daytime lights (headlights) will not come on when vehicle is started. fuse is ok

it is known as the drl system (daytime running lights) -
Answer 1
start with cking pwr at sockets -
Answer 2
Check to see if yours are the type where it has to be in 'drive' for them to come on.I think I've seen some with a set-up like that. -
Comment 1
Also with park brake off. -
Comment 2
OOPS , I forgot that part yes. thanks to wetry -