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02-27-2008, 01:40 PM
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Hummer Authority
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Join Date: Oct 2004
Location: Houston, TX
Posts: 1,290
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Re: S/C installed now I have shifting problems!!!
Quote:
Originally Posted by Rhyno
I'm taking it to AAMCO tomorrow but would like as much info as posible.
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Can't offer much advice other than to say that if I was having tranny problems after a supercharger installation, the absolute last place I would take it is AAMCO. That's like taking a Ferrari to Walmart for an oil change.
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02-27-2008, 02:11 PM
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Hummer Professional
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Join Date: Aug 2007
Location: Bartlett, Illinois
Posts: 486
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Re: S/C installed now I have shifting problems!!!
Tuning issue is what I would guess, I would find a reputable shop in your area that tunes vehicles (any shop that tunes F-Body's, Corvettes etc...) on a chassis dyno. You will not be able to get on the dyno with your rig but a competent tuner using software such as HP Tuners should be able to play with your shift points and rev limiter to eliminate this problem.
__________________
2008 H2 SUV Luxury: Solar Flare ext/Black int
SOLD 2006 H2 SUV Luxury: Pewter ext/Black int.
2002 Corvette Z06 Blue/Ebony (light mods)
1/4 mile: 11.661@118.86
2013 Audi S4
2002 Yamaha YZF R1 Blue/White
1/4 mile: 10.51@136
2006 Sea-Doo RXP (70.6mph GPS)
2005 Sea-Doo RXT
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02-27-2008, 02:13 PM
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Hummer Professional
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Join Date: Aug 2007
Location: Bartlett, Illinois
Posts: 486
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Re: S/C installed now I have shifting problems!!!
Quote:
Originally Posted by TXSUT
Can't offer much advice other than to say that if I was having tranny problems after a supercharger installation, the absolute last place I would take it is AAMCO. That's like taking a Ferrari to Walmart for an oil change.
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I agree 100%..... stay the hell away from AAMCO, you will be sorry you even walked through the door.
__________________
2008 H2 SUV Luxury: Solar Flare ext/Black int
SOLD 2006 H2 SUV Luxury: Pewter ext/Black int.
2002 Corvette Z06 Blue/Ebony (light mods)
1/4 mile: 11.661@118.86
2013 Audi S4
2002 Yamaha YZF R1 Blue/White
1/4 mile: 10.51@136
2006 Sea-Doo RXP (70.6mph GPS)
2005 Sea-Doo RXT
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02-27-2008, 04:38 PM
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Hummer Veteran
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Join Date: Sep 2006
Location: Ann Arbor, MI
Posts: 138
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Re: S/C installed now I have shifting problems!!!
from my experiance, you will have to rebuild the whole trans with better parts.
i went thru 3 trans after my SC install. but got it right after i found some one to rebuild with all of the best parts they could find for the trans.
it only cost around 1200 for the rebuild and i have pounded on the trans for the last 25000 miles and no problems
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02-27-2008, 05:47 PM
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Hummer Professional
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Join Date: Oct 2007
Posts: 267
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Re: S/C installed now I have shifting problems!!!
Have you tried to use the programmer that came with the S.C. and reinstall your settings??
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2003 H2 SUV Supercharged SHOW TRUCK
2013 Sierra Denali
2012 Yukon Denali
1974 Corvette conv. (454ci)
31ft Gulf Craft Boat
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02-27-2008, 05:56 PM
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Hummer Expert
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Join Date: Feb 2005
Location: new orleans
Posts: 506
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Re: S/C installed now I have shifting problems!!!
I have the Mag charger and I'm running 8lbs of boost. I am hard on my tranny but have never had a problem. Sounds like a tuning issue to me...
__________________
Maury Ballstein: I've got a prostate the size of a honeydew and a head full of bad memories.
03' White 2 Door H1 Pickup w/ 2in. body lift
05' BLACK SUT SLANTBACK Magnacharged w\ 12lb pulley, 6in. Fabtech lift, tierods, BUILT 4L80E tranny, 5.13 gears
66' VETTE STINGRAY
12' DODGE RAM 2500 CUMMINS 4X4 W/ FRONT & REAR LOCKERS
07' Z06
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02-27-2008, 06:25 PM
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Hummer Veteran
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Join Date: Apr 2003
Location: Kelowna,B.C., CANADA
Posts: 175
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Re: S/C installed now I have shifting problems!!!
Got an update, 2nd gear is gone! The shop said that the Band has broken for second gear. They are going to have to open up the tranny to see how bad it is. Good news is that the tranny fluid is still red.
__________________
2006 Pacific Blue H2 SUT
-Rancho Lift
-39.5" IROK Tires
-20" Rockstar wheels
-MagnaCharger S/C
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02-28-2008, 04:43 AM
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Hummer Authority
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Join Date: Sep 2003
Location: Canada
Posts: 1,251
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Re: S/C installed now I have shifting problems!!!
It would be in your best interest to find someone to build your transmission to handle the added power, in my experience the stock trans does not hold up unless you drive it easy. Basically you have upgraded to a performace engine and have it mated to a stock transmission making that your weak link(pretty expensive weak link). How many race cars ya see running a stock transmission?
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