Service tire monitor system gmc yukon xl 2007

1. Your tire air pressure could be low
2. Your sensor needs repair/replacement or needs to be cleaned

You wanna shut it off Check tire pressure, Check owners manual

Probably just your tire pressure.look in your owners manual.

one of your wheels needs air

Try putting air in all your tires to within
4 lbs of side wall max pressure

If light satys on go to a tire store

They will explain the TPMS System
or repair a bad wheel sensor

You can get that answer from reading your owners manual

camshaft sensor located above crankshaft pulley, the camshaft sensor mounted on the front timing cover above the crankshaft pulley.

you need a special key.the port beside the tag bracket.

Check here:

1. 2007 GMC Yukon XL - Owners Manual
2. 2007 GMC Yukon - Owners Manual

Hope helps (remember rated this).

Dear sir,
my 2007 suzuki xl7 service tire monitor system light stays on

Here's a link to a thorough article on the subject which should help you...

http://www.aa1car.com/library/abs_bleeding.htm