adjusting tranny shifts possible? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Boog** · 10-14-2014, 08:34 PM

I've got an 06 GMC crew cab Z71 with the 5.3, auto od w/4.10 gears. It has about 140,000 miles on it. It's a real nice truck but it shifts kinda lazy so to speak. I've not been into one of these trans and haven't use a programmer before. My question is can the shift firmness and timing be altered by maybe a tech tool these days? Just thinking I might want to firm it up a bit possibly.

clinebarger · 10-14-2014, 09:47 PM

At 140,000, I wouldn't change a thing. Factory 4L60E's have been known to last 300,000 with stock programming.

**Boog** · 10-14-2014, 10:05 PM

Hey CB. I am hesitant to do anything to it although the fluid is bright red and clean. My 2000 GMC is all stock and shifts much better than this 06.
I just pulled the camper with it and thought tightening up the shifts might help keep the heat down and make it last longer. I certainly don't want to do anything to harm it.

clinebarger · 10-15-2014, 07:18 PM

Most of what your feeling is Torque Management, A lot more Advanced/Intrusive on a '06 Compared to a '00.

To do what you want would require a Custom Tune & Torque Management turned down. A Hand Held might give you what you want, Not Sure??

**Boog** · 10-15-2014, 07:32 PM

Well I should probably just leave it alone then. I sure don't want to mess it up. Thanks.

10-14-2014, 08:34 PM	#1
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,535	adjusting tranny shifts possible? I've got an 06 GMC crew cab Z71 with the 5.3, auto od w/4.10 gears. It has about 140,000 miles on it. It's a real nice truck but it shifts kinda lazy so to speak. I've not been into one of these trans and haven't use a programmer before. My question is can the shift firmness and timing be altered by maybe a tech tool these days? Just thinking I might want to firm it up a bit possibly. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

10-14-2014, 09:47 PM	#2
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: adjusting tranny shifts possible? At 140,000, I wouldn't change a thing. Factory 4L60E's have been known to last 300,000 with stock programming.

10-14-2014, 10:05 PM	#3
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,535	Re: adjusting tranny shifts possible? Hey CB. I am hesitant to do anything to it although the fluid is bright red and clean. My 2000 GMC is all stock and shifts much better than this 06. I just pulled the camper with it and thought tightening up the shifts might help keep the heat down and make it last longer. I certainly don't want to do anything to harm it. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

10-15-2014, 07:18 PM	#4
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: adjusting tranny shifts possible? Most of what your feeling is Torque Management, A lot more Advanced/Intrusive on a '06 Compared to a '00. To do what you want would require a Custom Tune & Torque Management turned down. A Hand Held might give you what you want, Not Sure??

10-15-2014, 07:32 PM	#5
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,535	Re: adjusting tranny shifts possible? Well I should probably just leave it alone then. I sure don't want to mess it up. Thanks. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross



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