I noticed in my 04 H2 the headlights and side markers are working just fine but all my roof lights are not???? checked the 10A fuse under the hood on the drivers side and its not blown. Any suggestions????

 

Check for bad grounds. High resistance connections. Both front and rear clearance lights come from the fuse block in the engine bay. The I/P (instr. panel) harness leaves the fuse block on the rear side and goes through the firewall in a big ruber grommet. The I/P fuse panel is left near the left kick panel. The splice where the f/r seperate is near the light under the dash (about 2.25" away from where it entera the I/P haness) the front roof harness hooks into the I/P junction block on the pass side Connector C6. If you can get hold of a manual (hummer H2 service manual Vol 2) schematics are on pg. 8-276. Clearance lamp trouble shooting is on 8-369. Mind you that I am looking at a 2003 H2 manual. But It shouldn't be much difference.
I had a much deataied answer, but it took so long that my logon timed out.
Hope this helps.
MikeH

 

Did you get it fixed?
MikeH

 

 

Sort of an odd first post replying to a thread that is over 10 years od. I'm sort of thinking that the member you replied to (who has only ever posted that one single time) OVER 10 years ago probably has moved on from the issue. And most people are aware of the decal on the underside of the fuse box lid (and is also in the owners manual).