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2wd to 4wd conversion

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2wd to 4wd conversion

Postby Tech4665 [OP] » Jul 17 2012, 10:08pm

okay so basically im stuck. i have a 2008 GMC sierra 2wd and i want to convert it to a 4wd. i found a 2003 Silverado 4wd i can get all the parts off of. I am pretty sure all the parts will fit and every thing but my main question is would i need a newer transfer case module or anything, or could i use the same old module out of the 2003 into my 2008. a technician at GMC said i would need a newer module but other people say it would work just fine with the same old module. i hear alot of problems with it going into 4wd low when the conversion happens.
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Related Topics  2WD to 4WD   Leveling your 2WD and 4WD   2wd lift fit 4wd?   How do you use 4WD wheels on a 2WD truck?   2006 Sierra 4WD problem in 2WD   2004 2wd Silverado Stock 20's On 2009 4wd   SIERRA will not shift into 4WD HI or Auto 4WD, but 4WD Lo OK   2wd stock height and 4wd stock height...   2000 Silverado no power to front in 4wd unless in auto-4wd?   serv 4wd light on wont go into 4wd need help bad!   00' NBS Silverado won't come out of Auto 4WD or 4WD Hi   no Service 4wd message & no 4wd   Conversion 4.3 to 5.3   2500HD conversion 
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Re: 2wd to 4wd conversion

Postby ASTE25 » Jul 17 2012, 10:10pm

I'm not sure the parts off the 2003 will work on the 2008 because they are different generations vehicles.
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Re: 2wd to 4wd conversion

Postby Tech4665 [OP] » Jul 17 2012, 10:12pm

thats what i thought to but alot of forums are saying it should because they both have the 5.3L and 4L60 trans.
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Re: 2wd to 4wd conversion

Postby Bostonmaniac781 » Jul 17 2012, 10:21pm

The motor and tranny may be the same but the frame, body and everything else is completely different. Like ASTE25 said, they are different generations.
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Re: 2wd to 4wd conversion

Postby Tech4665 [OP] » Jul 17 2012, 10:22pm

so no go overall basicall?
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2wd to 4wd conversion

Postby Machster69 » Jul 17 2012, 10:27pm

Im betting my $20 on a definite no go...
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Re: 2wd to 4wd conversion

Postby raider27 » Jul 17 2012, 10:30pm

You should just look for a 4x4 truck to replace the 2wd. Even if you had a donor NNBS, it would be really expensive and a lot of work.
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2wd to 4wd conversion

Postby Machster69 » Jul 17 2012, 10:34pm

Youd receive none of that money/work in return when you sold it. Hell ide never actually buy the truck if you did that to it....
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Re: 2wd to 4wd conversion

Postby ASTE25 » Jul 17 2012, 10:34pm

The 2003 front suspension is a torsion bar and the 2008 is a coil spring suspension. I doubt they will interchange anyhow. Like stated above, it would be cost prohibitive.
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Re: 2wd to 4wd conversion

Postby Tech4665 [OP] » Jul 17 2012, 10:48pm

alright thanks everyone. least i didnt buy it yet.
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