Mechanics

CODE P300 AND U1000

2004 Hummer H2 • 175,000 miles

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

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Hummer2004
January 27, 2012.



-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-

Rasmataz
Jan 27, 2012.
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.

Mhpautos
Jan 27, 2012.
P0300-Randon Misfires-normally caused by bad fuel and vacuum leak

Go to this link: http://www.2carpros.com/articles/engine-misfires-or-runs-rough

Rasmataz
Jan 27, 2012.
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

Tiny
Hummer2004
Jan 27, 2012.