2011 5.3 6spd vs 6.2 6 spd
03-06-2011 | 04:39 PM
#21
Man Motor club
Joined: Jun 2007
Posts: 2,623
Likes: 1
From: Sunniest city on Earth
I've been taking it easy to try to drive as long as possible on a tank. I could get single digits if I hit the go pedal more often 
03-06-2011 | 05:41 PM
#22
Staging Lane
Joined: Feb 2011
Posts: 69
Likes: 0
From: Boston, MA
I have about 2k miles on my new 6.2L now.
I see regularly 11.5-13mpg all city, and that's using the remote start cause winter has sucked. Highway I've gotten 17-18mpg at 70-75.
The power is great, I haven't changed anything yet and I still love the truck.
I vote 6.2L
I see regularly 11.5-13mpg all city, and that's using the remote start cause winter has sucked. Highway I've gotten 17-18mpg at 70-75.
The power is great, I haven't changed anything yet and I still love the truck.
I vote 6.2L
03-06-2011 | 08:04 PM
#23
I was in the same boat- see my thread Need Some Advice. I was out to get a 5.3 CC, and they were all over. Then I was on a mission to get a 6.2, I was well aware of the economy differences as I had a 5.3 at the time and had justt spent the day in Mom's Esky(6.2). Well I got the 6.2 and am happy I did- with NHT(3.73's) it has a little more zing than Mom's Esky(3.42's) and doesn't feel labored at all. I remember up the slight grade here out of Eldorado my old 5.3 felt like it was working and working, granted a 120,000 mile truck, but it was noticeable. Taking it easyon the highway I've nipped at 19MPG. Really glad I wen't with the 6.2, ya really can have yer cake and eat it, too with this masterpeice.................
03-06-2011 | 08:25 PM
#24
03-06-2011 | 08:28 PM
#25
TECH Enthusiast
iTrader: (9)
Joined: Nov 2002
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From: Pearland Tx
I am considering purchasing a new sierra. Both trucks are ext cab 4x4. I really would like the 6.2 6spd with 3.73's but I am not sure it is worth paying the extra and getting the little worse fuel mileage. From what I can read on here a good stock mpg number is 11-13 with the 6.2 and 6speed. I assume I can get 15mpg with the 5.3l, 6sp, and 3.42(since you can not get 3.73s with this setup).
I pull small loads (-2500lbs) regularly, and I pull a 7,000lb boat often in the summer. I know both trucks will get around 10 or less pulling, that part does not really worry me. I know the 5.3l has the ***** to pull my truck but will not pull it as good as the 6.2 obviously. Both trucks are identical trucks except drivetrain. I will be paying about 1,800 for the 6.2l, the 5.3l does have the information center thing in the dash, but I am pretty sure that was the only thing extra it had.
Can you guys give me some insight on some situations I may need to know? I would like to tune either truck, I have had a 5.3l to the max before so I know what its capability is. How is the 6.2l with issues and how about the 6sp? I will want to level it out and put a bigger tire and with warranty issues I do not want to have common problems and be negated my warranty for having a tune.
Thanks
I pull small loads (-2500lbs) regularly, and I pull a 7,000lb boat often in the summer. I know both trucks will get around 10 or less pulling, that part does not really worry me. I know the 5.3l has the ***** to pull my truck but will not pull it as good as the 6.2 obviously. Both trucks are identical trucks except drivetrain. I will be paying about 1,800 for the 6.2l, the 5.3l does have the information center thing in the dash, but I am pretty sure that was the only thing extra it had.
Can you guys give me some insight on some situations I may need to know? I would like to tune either truck, I have had a 5.3l to the max before so I know what its capability is. How is the 6.2l with issues and how about the 6sp? I will want to level it out and put a bigger tire and with warranty issues I do not want to have common problems and be negated my warranty for having a tune.
Thanks
Second would be the MPG concern, I know a few people that are pulling 19+mpg on the highway after you slap a tune on the 6.2's, it really makes a difference, but your going to have to run 91+ octane.
As far as the tune goes and the warranty, your taking a risk. I haven't heard of a dealer giving someone **** for to many flashes on the Computer, but im sure they could if they wanted.
03-06-2011 | 10:08 PM
#27
The 6.2 usually comes with the 90 in the Crew cabs...the 5.3 comes with the 80.
03-06-2011 | 11:44 PM
#28
Man Motor club
Joined: Jun 2007
Posts: 2,623
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From: Sunniest city on Earth
FYI, all 6-speed 1500s are 6L80E, no matter what. I have the same trans as a guy at work and we both have 2011 Silverado 1500 4x4 CCSB; the only difference is that his has the 5.3 and mine has the 6.2.
03-06-2011 | 11:56 PM
#30
They apparently have them in the burbs, Yukons, Esclades and CC Silverado/Sierra and Denali's...And this came from a pretty knowledgeable guy there.
IDK???
I have a 2010 Z71 LTZ ExCab....I have 3.42's with the 5.3 and 80E...but I asked for them, I don't know what else is out there.