2003 Bravada front differential intermediate shaft splines stripped - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 5.3L V8 Engine and Drivetrain > 4x4 Drivetrain

4x4 Drivetrain 4x4 Repairs & Problems

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  #1  
Old 05-29-2008, 12:43 PM
wbsterritt's Avatar
wbsterritt wbsterritt is offline
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2003 Olds Bravada
Summit White 4.2L I6 AWD
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2003 Bravada front differential intermediate shaft splines stripped

I am presently addressing an issue on my 2003 Bravada with AWD (A4WD.) Haven't arrived at the root cause as of yet. Both the "I" shaft and the RH bearing assembly need to be replaced. I was able to salvage these two parts from a SELECTABLE 4WD(S4WD) Trailblazer. The "I" shaft is identical, however, the bearing assembly has the disconnect actuator (SELECTABLE) as part of the assembly- a horse of a different color! My intent is to wire up the actuator as a switchable unit thereby allowing me the option of 2wd or 4wd since everything else is identical physically and operationally. I will feel a lot more "warm and fuzzy" if I can figure out the root cause of the original failure. Am I overlooking anything that will shoot this plan down?
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  #2  
Old 05-29-2008, 05:40 PM
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RayVoy RayVoy is offline
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2009 Chevy Avalanche LTZ
Black 5.3L V8 4X4
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You would have a very unusual truck.
As u probably know, that actuator assembly is used in the chey/gm trucks (4x4). And, the actuator is engaged in any of the 4wd selections, including the AWD selection in the 4x4 trucks.
To the best of my knowledge, your truck is in 2wd most of the time (under normal conditions, no parts broken). There is somewhere around 5% of the power going to the front, but that is all.
We use the actuator to release the the front driveshaft when in 2wd or transfer case neutral.
I don't know what your plan would buy for you, but, as you are reducing the rolling resistance, it will save u 1 or 2 mpg
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Old 06-10-2008, 10:16 AM
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wbsterritt wbsterritt is offline
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2003 Olds Bravada
Summit White 4.2L I6 AWD
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2WD from AWD

Made the switch and everything went well. Only slight issue is that the vehicle must be stopped before switching between AWD and 2WD-minor inconvience to me. Avg. mileage went from 18.7 to 19.8 mpg at the moment. Still don't know what original failure was caused by.
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Old 06-10-2008, 10:29 AM
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Cool!
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Old 06-10-2008, 08:15 PM
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  #6  
Old 06-16-2008, 08:46 AM
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wbsterritt wbsterritt is offline
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2003 Olds Bravada
Summit White 4.2L I6 AWD
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MPG

MPG up to 20.5 as of this weekend. Go baby!
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