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  #13  
Old 02-23-2014, 07:32 AM
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Re: Never ending check engine light 2014 GC

Wow...yet another possible 2014 GC V6 issue for me to worry about. First it was the shitty shifting transmissions many have complained about (including myself), now cylinder head replacements.



Subscribing to this thread for sure. Yet another reason why I should trade-in my 2014 GC before the standard warranty wears out. Glad I didn't pay the $2000 for an extended warranty!
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My V6 Overland transmission shifts like crap!
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Old 02-23-2014, 03:01 PM
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Re: Never ending check engine light 2014 GC

Crespo0542
So finally following the 4th software update that was attempted on my GC, they determined there was a larger problem, a "valve body" was determined to be defective. Come to find out, the valve body on this truck is the entire shift valve system and the Transmission Control Module, all in one. They had to completely reinitialize the module once installed, some extensive 15-20 miles driving exercise as well as software programming. Now the truck shifts perfectly up and down the gears. The only caveat is that there is still a little more abrupt shift into 1st when coming to a stop than I would like, but they attribute this to the Variable Valve timing keeping the revs slightly higher than ideal for this downshift.....sounds a little fishy to me.
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Old 02-23-2014, 03:05 PM
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Re: Never ending check engine light 2014 GC

Found it in this post and there is a lot more info, Good, Luck.
FLASH: TRANSMISSION SHIFT ENHANCEMENTS (vehicles with 3.6L engine) ( 1 2 3 ... Last Page)
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Old 02-23-2014, 10:43 PM
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Re: Never ending check engine light 2014 GC

Quote:
Originally Posted by DKRD12 View Post
Crespo0542
So finally following the 4th software update that was attempted on my GC, they determined there was a larger problem, a "valve body" was determined to be defective. Come to find out, the valve body on this truck is the entire shift valve system and the Transmission Control Module, all in one. They had to completely reinitialize the module once installed, some extensive 15-20 miles driving exercise as well as software programming. Now the truck shifts perfectly up and down the gears. The only caveat is that there is still a little more abrupt shift into 1st when coming to a stop than I would like, but they attribute this to the Variable Valve timing keeping the revs slightly higher than ideal for this downshift.....sounds a little fishy to me.
Thanks! Good information here. I'll read that thread.
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