Am looking for a repair maual for a 2003 Hummer H2 that has an electrical diagram in it?

03 h2 service 4x4 light on but everything works fine ? both front heated seats dont come on light on door only lights when button is held on ?

Go to faxonautoliterature. They carry the original dealer service manual for your Hummer. It will havwe wiring diagrams in it. I have used them before and had excellent service. Hope this helps.