Question about 2006 Hummer H2 SUV

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2003 hummer h2 shifter moves freely and will not engage transmission

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: hummer h2 transfer case

Only way for this to happen on an H2 (AWD) is for something to break rearward of the lockup hub. Take a look at the splines between the intermediate shaft and centerdifferential or even the teeth on the forward sun gear and/or stepped pinion on the center diff.

As long as you have the t-case torn down for repair be sure to upgrade to the new aluminum mode fork (production upgrade to old plastic forks thru end of 2007 or so). You should also upgrade the rear half of the housing to the 2008 version which has a pressed-in rear prop bushing (better bushing and is also replaceable.

Posted on Sep 30, 2008

  • 1 Answer

SOURCE: shifter is stuck in park

The shift cable is off the lever on the trans...the dash indicator states drive but the shifter is in park. Look under the drivers side of the trans, next to the catalytic converter(make sure the truck is cooled off) the trans cable will not be attached to the tranny lever-re-attach and you will be able to get it home or to a shop for a repair. This happened to me already, simple fix.

Rob Davis
2003 H2

Posted on May 10, 2009

SOURCE: my 2003 h2 hummer will initally not shift from

Check the linkage that goes from the shift lever down to the transmission. It sounds like somewhere along the line, it has become disconnected or has broken.
if that parts are clean then It sounds like you have a shift control solenoid that has high resistance causing the hard shift you describe. Scan the PCM for trouble codes if none are present you could have a internal transmission problem.

Posted on Jul 17, 2009

Ajkill
  • 2035 Answers

SOURCE: hummer h2 2003 55000 mill

Remote the battery wire from the car for 20 minutes make and plug it back this will reset the computer of the car if the light is on you need to service center and get it checked....................

Posted on Jun 08, 2008

  • 20 Answers

SOURCE: how do you replace a fuel pump on a 2003 h2

You have to drop the gas tank. The fuel pump is located inside.

Posted on Jul 02, 2010

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1 Answer

At what RPM 1st gear should shift on a H2 Hummer 2003


well is that hummer that a 2 ton or 4 ton vehicle ?

would take a lot of revs for first gear to make it roll from a standing start
think it will be fitted with an 6 speed automatic transmission

guessing only from my heavy vehicle driving experiences
first should change below 3000 rpm

if transmission was slipping in first gear you would know

suggestion
ring up the local hummer service division for the correct answer





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Oct 12, 2016 | 2003 Hummer H2

1 Answer

Ignition switch key lock solenoid passat


when you shut it off were the wheels cranked sideways-sometimes this puts pressure on the locking system and won't let it disengage-try moving the steering wheel back and forth while applying pressure to the key-I hope this helps-cheers Denny

Nov 08, 2013 | 2004 Hummer H2

1 Answer

2003 h2 hummer is having shifting problems with transfercase. and the shifter moves freely even if the truck is off with out using break pedal


I had this problem with my 3002 H2, it was the transfer case. The OEM Transfer case has a plastic shifting fork. this wears out and eventually will cause the transmission to go out, I purchased a re-built transfer case on-line of $700.00 and had it installed for $500.00. problem solved....and the re-built has no plastic shifting forks.

Mar 27, 2013 | 2003 Hummer H2

1 Answer

Shifting linkage lose and will not go into gear would like to see diagram of linkage were would i find one


I had the same problem on my 05 HUMMER. I got under truck and saw that the linkage bushing on shifter cable had come off the shifter. i put it back and was able to shift gears again. I moved the truck and it came off again. I had to get a eight dollare part from Advane Auto parts to fix problem

Jul 11, 2012 | 2003 Hummer H2

1 Answer

My 2003 h2 hummer will initally not shift from


Check the linkage that goes from the shift lever down to the transmission. It sounds like somewhere along the line, it has become disconnected or has broken.
if that parts are clean then It sounds like you have a shift control solenoid that has high resistance causing the hard shift you describe. Scan the PCM for trouble codes if none are present you could have a internal transmission problem.

Jul 17, 2009 | 2003 Hummer H2

2 Answers

MY 2004 H2 Hummer is in park... I can start it but no matter what I do I cant get it out of park??? any Idea's


Do your brake lights work? It might be the brake switch or the shift interlock solenoid.

Jun 08, 2009 | 2003 Hummer H2

1 Answer

Shifter is stuck in park


The shift cable is off the lever on the trans...the dash indicator states drive but the shifter is in park. Look under the drivers side of the trans, next to the catalytic converter(make sure the truck is cooled off) the trans cable will not be attached to the tranny lever-re-attach and you will be able to get it home or to a shop for a repair. This happened to me already, simple fix.

Rob Davis
2003 H2

Mar 11, 2009 | 2003 Hummer H2

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