What up folks I just got an 03 suburban LT and a few days ago the (service brake system indicator,parking brake light and that annoying warning alarm had came on, I took a peek at my brake pads all the way around and noticed that the rear pads was very low so I changed them think that might have been the issue but it wasn't, lights and bell still on.....can someone guide me in the right direction and keep me from going to the dealer.......Thanks

 

Welcome to the forum...
Check your fluid reservoir, check that the sensor to the fluid reservoir is connected. Check your parking brake switch...
You may need to check for codes to get it narrowed down.....

 

ok Thanks will do, at first I thought it was my brake pads being very low so I just changed them all.

 

@in2pro.....I checked those options that you provided...all was good.....the only thing left is to check the emergency brake shoes that are right behind the rear drums..i believe there may be a sencor back there as well