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#1
10-30-2011, 05:26 PM
Hummer Novice
Join Date: Aug 2011
Posts: 12
HELP Rear wheels Locked up while driving
Help,
My wife was driving our 2003 H2 with 50K yesterday and manually downshifted the Hummer from 3rd to 2nd while approaching a downgrade. She wasn't driving faster than 20 mph. The rear wheels locked up momentarily and the engine shut down. Sounds like something I have down accidentally shifting from drive to reverse in an old Suburban. I tried to recreate the situation but cannot. Any input would be great. Thanks
#2
10-31-2011, 12:44 AM
Hummer Expert
Join Date: Jan 2011
Location: Canton, OH
Posts: 628
Re: HELP Rear wheels Locked up while driving
why did she downshift the gears in the first place? its cheaper to replace brake pads than it is transmissions.
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2012 Porsche Panamera 4
#4
10-31-2011, 09:35 AM
Hummer Veteran
Join Date: Nov 2009
Location: Georgia
Posts: 85
Re: HELP Rear wheels Locked up while driving
I live in the mountains of North Georgia and I have been downshifting to 3rd and 2nd regularly for over 5 years to get engine braking. Have never had a problem. Looks like something in the rear end decided to lock up....most like ly a random failure not associated with downshifting the tranny
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2004 Black H2
#5
10-31-2011, 01:40 PM
Hummer Authority
Join Date: Jun 2005
Location: Key Largo
Posts: 1,174
Re: HELP Rear wheels Locked up while driving
Sure she didn't accidentally push the shifter slightly forward into Reverse? I did that one time on a downhill trail in the heat of the moment on one of the Lynch Hummer dealer sponsored outings doing what I thought was downshifting (there was also the distraction of a wasp in the cab) and it locked everything and shut down the engine. I could have sworn I didn't push forward into reverse, but the wife was next to me and said otherwise. We also were going very slow, perhaps 10 - 15 mph.
#6
10-31-2011, 09:56 PM
Hummer Veteran
Join Date: Oct 2008
Location: San Diego, Las Vegas area
Posts: 192
Re: HELP Rear wheels Locked up while driving
Quote:
Originally Posted by 2010_5thgen
why did she downshift the gears in the first place? its cheaper to replace brake pads than it is transmissions.
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Sold!!! 
2009 H2 SUV Graystone Metallic. Next stop, 2006 H1 Alpha Hard Top
#7
11-01-2011, 03:59 PM
Hummer Novice
Join Date: Aug 2011
Posts: 12
Re: HELP Rear wheels Locked up while driving
Thanks for the input. Yep brakes are cheaper than trannies. We lived out west in the mountains and got used to engine braking. I tried to recreate the situation but could not. I think that she inadvertantly shifted to reverse (I hope so). Thanks again and I'll update if something new happens.
#8
11-01-2011, 06:30 PM
Hummer Veteran
Join Date: May 2010
Location: Las Vegas, NV
Posts: 199
Re: HELP Rear wheels Locked up while driving
I have used engine braking in all my vehicles including my H2 and never had an issue. Just a wild guess, but I think my wife would be reluctant to 'fess up if she accidentally shoved the tranny into reverse, "I'm not stupid! I would never do that!"
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2005 H2 Desert Sand Lux with partial adventure package
Show me a H2 owner with low profile street tires and I will show you a guy who thinks the coolest way to shoot a Glock is cocked sideways.
#9
11-01-2011, 07:46 PM
Hummer Expert
Join Date: Dec 2007
Posts: 705
Re: HELP Rear wheels Locked up while driving
Keep your finger off the button and it wont go in reverse
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