Code P300 and U1000

2004 HUMMER H2
175,000 MILES
Avatar
HUMMER2004
  • MEMBER
  • 2 POSTS
Hello.

I had my Hummer H2 -04 to service and they found code P300 and U1000, it is problem with the dash panel, non of the gaugers is working. And the ABS lamp is shine when i get up in speed.
What do you think the problem is?

Sincerely Matthias

Jan 27, 2012 at 7:59 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
-Possible causes here could be a wiring harness/connectors or the CAN communication is open or shorted-You probably have to see the dealership to have this fix-
Jan 27, 2012 at 8:07 PM
Avatar
MHPAUTOS
  • CERTIFIED EXPERT
  • 31,937 POSTS
P300? there is a P3000 misfire code.... the U1000 is a non communication code, try doing a code clear and a re scan first, the ABS should give a code as well, often a faulty wheel speed sensor.
Jan 27, 2012 at 8:12 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
P0300-Randon Misfires-normally caused by bad fuel and vacuum leak

Go to this link: https://www.2carpros.com/articles/engine-misfires-or-runs-rough
Jan 27, 2012 at 8:29 PM
Avatar
HUMMER2004
  • MEMBER
  • 2 POSTS
Thank you for all your advice. I will test this tomorrow.
I will get back to you and tell you how it is going
Sincerely
Matthias from Sweden
Jan 27, 2012 at 9:02 PM