Abs and check engine light not working.

Sorry It didn’t actually tell me what the exact problem was. It gave me the code p0030 when I looked it up it said P0030 is a diagnostic trouble code (DTC) for "HO2S Heater Control Circuit (Bank 1 Sensor 1)" which is the O2 sensor I believe but my problem is the check engine light or abs light is not showing on my dash.

Thus is a link to a very handy diagram of the fuse boxes: https://www.autogenius.info/cadillac-escalade-2007-fuse-box-diagram/ Use the link and locate the O2 sensor fuse(s) .. The O2 heater circuit is protected by a fuse - failed fuse is likely your problem.

Highly recommend TESTING ‘ALL’ FUSES using a 12 volt test light - with key on.