Question about 2004 Hummer H2
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Posted on Jan 02, 2017
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
SOURCE: 2006 Hummer H2 tranny problem
sounds like your torque converter is damaged and will need replacing. make sure fluid is up to proper level, but I wouldn't get too hopeful...
Posted on Jun 23, 2011
if you changed selinoids i hate to say it but i think its toasted. but before dropping the cash on a new ****** i would go to the nearest chevy dealer and have it put on the computer. this way if when they update your software it doesnt fix the problem you need a ****** shop.
my hummer set for nearly six months and when i started driving it again i thought my ****** was toast, it would go through all the gears but slipped like no other, i went online and bought a superchips programmer and all was well again. somtimes the computer just needs kicked in the ***!
Posted on Nov 26, 2011
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