6.2L (L9H) Owners - Get all your questions answered here

[RyanbabZ71]

Nice what yr is it?

 

 

Ryan

 

 

[Likarok]

2008 Atomic Orange Z06

 

So much fun to drive but up here in Canada we only have about 6 months of the year I drive it. For winter she is under wraps and winterized..........

Edited August 24, 2012 by Likarok

[txmuder]

I made some changes on my 2012 CC Texas Eddition: Added red pin stripping and red emblem on hood. IMO it makes mine stand out from other white ones and gives me a little personal styling and difference. Just IMO guys and gals to each their own right.

[SILVERADOSC540]

Still think your best mod is the front bowtie. It's just cool.

[txmuder]

Ha Thanks me too, Still think yours is the 540 Hp LOL, So have you hit a top speed yet? Esp since now you know where the DIC has the digital speedometer.

[SILVERADOSC540]

Haven't taken it out on a run lately. To work from work to work from work, etc. All work and no play.

[txmuder]

makes for a dull day i know same over here

[norm69]

How is the 6 speed mated to the 6.2L? My brother in law has a '12 5.3 w/6speed and hates the tranny, claims it hunts alot and not smooth, I've never driven it. I like my '08 5.3 4 speed, but am seriously considering ordering a 6.2L next year. Likes/dislikes? Thanks.

[ChevyTech77]

Love my 6spd and 6.2. The 6L80 is a quick learn trans so it is constantly adapting to conditions. Some people like that and some don't.

Edited September 23, 2012 by ChevyTech77

[RyanbabZ71]

I have had (2) 4 sped trans and my current 6 speed

 

Hands down I would choose the 6 speed

 

 

Ryan

 

 

 

I have had (2) 4 sped trans and my current 6 speed

 

Hands down I would choose the 6 speed

 

 

Ryan

 

 

[becker87]

Love the 6spd. Takes some getting used to, but as soon as you do there is no way I would ever go back to a four speed.

[Raymond Lowe]

The GM programming for the 6-speed can be pretty lame as the emphasis from the factory is maximum mileage (CAFE numbers). Back in 2008, the two biggest complaints were the truck not down-shifting quick enough up slight hills and a long delay downshifting when you punched it above 30mph (think on-ramp). GM came out with a transmission program (a TSB) that helped somewhat but it didn't cure all.

 

Getting an engine tune helps smarten up the shifting quite a bit. Getting an engine/tranmission tune via the AutoCal is the ultimate answer. You actually download a separate transmission tune file that smarten's it right up. If I'm climbing a hill and depress the pedal even a smidgen, it drops a gear instantly. Seamless!

 

I don't know why GM doesn't have this solved yet. You would think they could add a switch similiar to the "Tow/Haul" button for performance or "Sport" mode like Toyota used to offer years ago, and maybe keep their CAFE averages.

[11Silvy]

CAFE and abuse.

[BlueZ01]

Has anyone put a K&N Cold Air Induction on the 6.2 and if so whats the results?

[Knowklew]

Has anyone put a K&N Cold Air Induction on the 6.2 and if so whats the results?

 

 

BlackBear did a comparison of all the popular intakes, just search for the thread.

 

To save you some time, just run an Airraid MIT with either the stock filter or something like an AFE Pro Dry S drop in replacement. Best bang for the buck by far.