Question about 2003 GMC Sierra

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Electric push button 4x4 transfer case

I keep having problems with my push button automatic 4x4 transfer case going out. Ever since I bought it at 2 miles it has been doing it. I have taken it in the shop over 6 times and they have only really worked on it twice because they can't get any error codes to tell them what to do to fix it. Since it was under warranty they wouldn't try to fix it if it didn't have an error code and now that it is out of warranty they will but they **** at trying to fix it but want to charge me for it everytime they look at it. I have spoken to several people that own a GMC pickup and everyone of them say they have had the same problem. Why don't they have a recall on this product?

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  • Blackanuk Jan 31, 2009

    "Service 4wd message" appeared after getting a car wash. The 4x4 pushbutton will not activate the 4x4 auto or 4x4 high or 4x4 low. Thankfully 2x4 still works. No error codes found. The local repair shop retrieved code CO306 Motor A-B circuit malfunciton from their testing system but could not locate the source of the problem. I'm still two wheeling....

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I work for a GMC dealership....and I have an 03 sierra with auto 4x4 and i work on these every day....and im not seeing this common problem ur talking about.....sounds like its the mode switch or the tccm.....would need more info to diagnose

Posted on Jan 24, 2010

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My ford ranger just did the same thing went boggen now my four wheele would not com out 2days later it did now 4x4 coms on but will not go i 4low.. i dont know what it is yet

Posted on Jan 03, 2010

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YA definatly your think is gonna way on renovation but why company not taking action even i heard a same problem for GMC pickups from you 3rd time.

try to reseell your pickup cause if prob with 4*4 than its not a perfect design for 4*4 driver willl looosing their fun * love for 4*4.

i m suggesting to you for try some new model if warrenty & you can or try to install another brand for automatic transfer

Posted on May 16, 2008

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1 Answer

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Check out F150OwnersBlog.com or 4x4Owners Blog. It sounds like the actuator inside the transfer case is stuck.

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3 Answers

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pgale89

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