CODE P300 AND U1000

2004 Hummer H2

Tiny

Hummer2004

January, 27, 2012 AT 7:59 PM

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

FOUND 9 RELATED QUESTIONS

U1000 Code

6 ANSWERS
1 IMAGE

U1 Code

5 ANSWERS

4 Answers

Tiny

rasmataz

January, 27, 2012 AT 8:07 PM

-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-

Tiny

mhpautos

January, 27, 2012 AT 8:12 PM

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.

Tiny

rasmataz

January, 27, 2012 AT 8:29 PM

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

Tiny

Hummer2004

January, 27, 2012 AT 9:02 PM

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

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