Question about 2003 Hummer H2

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Engine codes for hummer h2. I bought the diagnostic device and I need the codes how do I get them? Thank you Annamarie

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  • s2kracerx Dec 20, 2008

    h2 antifreeze leak.. can see a litttle antifreeze towards front of motor but cant find cause.. 59,000 miles

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P0758 obd code Hummer h2 2003

Posted on Oct 15, 2011

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Servttm

Posted on Aug 04, 2010

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Plug it in turn key to on

Posted on Sep 25, 2008

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1 Answer

Check engine and service traction control light on in 3rd limp mode


Check engine light on , check DTC'S - diagnostic trouble codes ! Check Engine Light On If not familiar with this take it to a ASE certified repair shop or dealer . 3rd limp mode ? Do you have a message in the DIC - driver information center , reduced power mode ?
ENGINE POWER IS REDUCED
Engine Control Module Description for the 4.8L, 5.3L, 6.0L and 6.2L engine

Apr 16, 2016 | 2008 Hummer H2

1 Answer

Does anyone know if there are seat track extenders for a hummer h2 .I'm 6'5 and need the seat to go back just a little bit more


There's no after market product that will help you.

Your options are to have an engineering shop that will fabricate extended tracks for you, or alter the seat itself so it will fit further back on the current tracks.

Nov 02, 2015 | Hummer H2 Cars & Trucks

1 Answer

When I connected diagnostic/testers to the OBD-II connector on my 2007 Hummer H2 SUV, they did not work at all, does anyone know why ? What are the exact pinout of this connector on Hummer H2 ?


Data Link Connector (DLC) Pin
Wire Color
Circuit No.
Function
1
--
--
Not Used
2
PU
1132
Class 2 Serial Data
3
--
--
Not Used
4
BK
1050
Ground
5
BK/WH
1851
Ground
6-15
--
--
Not Used
16
OG
640
Battery Positive Voltage

Dec 26, 2014 | 2007 Hummer H2 SUV

1 Answer

Hummer p0128 code


ECT sensor is located on front of left cylinder head, above spark plug.

Jun 29, 2012 | 2003 Hummer H2

1 Answer

What is the spark plug gap ,on a 2003 h2 hummer.


what size engine did they come with. make it easy on yourself call the auto part store were you bought your plugs they should have told you proper gap and torque.

Dec 17, 2011 | 2003 Hummer H2

1 Answer

P0751 obd code hummer h2



  • Shift Solenoid "A" Valve S1. the transmission is going to have to be pulled, opened up and that shift solenoid replaced, sorry.


  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.


Regards, Tony

Oct 12, 2011 | 2005 Hummer H2

1 Answer

Reduced engine power, warning displayed in panel. No acceleration Hummer H2 ,2003- 4.3 vortex. Tried disconnecting battery to reset, failed.


Needs to be put on computer to read codes to see whats going on.Could be one of many things going on there.

Mar 08, 2011 | 2003 Hummer H2

2 Answers

What is the Anti-freeze capacity for a 2005 Hummer H2?


Hi there,

The Cooling System Mix 1 7/8 Gallon (s) of Full Strength Anti-Freeze. Add to 1 7/8 Gallon of Water for a 50/50 strength mixture.

Good luck...

Jan 16, 2011 | 2005 Hummer H2

2 Answers

My 2003 H2 engine light flashes but no trouble code.


When the light flashes it means you have a catalytic damaging misfire happening.. Most likely a coil or spark plug issue but could be something else. Get it fixed ASAP because if you toast your cat its going to get expensive

Aug 10, 2009 | 2003 Hummer H2

1 Answer

2003 Hummer H2 overheats while idling in Park


NED TO HAVE THE CODES FOT THE CHECK ENGINE LIGHT READ.THE CODE WIL LEAD U IN THE CORRECT DIRECTION.GET BACK TO ME W/THE CODE.

May 13, 2009 | 2003 Hummer H2

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