$9,157 off MSRP...Buy now or wait?

ewbldavis · November 18, 2015

I wanted to say "f-it, pull the trigger",

But your 2012 is a beautiful truck. Keep that baby and enjoy no car payment for a while

amxguy1970 · November 18, 2015

Let someone else that wants a 6.2 buy that truck..... there is a 10:1 ratio or more 5.3 trucks out there than 6.2's. If you can't afford premium fuel/ don't want to buy it or whatever excuse, buy the 5.3 as it runs on 87 just fine and is designed for it. The 6.2 will run on 87 as well but be in the lower octane spark table and basically run like garbage comparitively to one on premium in the long term. That doesn't stop people though.... plenty of 6.2 trucks of this generation and the past (07-13) and I have yet to see someone fill one up with premium fuel while I am at the gas station lol.

Funny, ours does not run like garbage and we run mostly 87. Just over 1mpg difference noticed when doing back to back comparison. No big butt dyno feel in difference between the two in power or smoothness. Ford says their 6.2 (set up similar to the GM recommending premium) losses 10 hp at the crank between regular and premium (401 vs 411), figure about the same for GM. Can you feel that difference? More than likely not or minimally.

We will continue to use what GM says can be used until it becomes more cost effective or we are towing a heavy load in the summer up some passes just to be safe. No damage will be done otherwise as the motor was designed to run on that octane...

Tyler

Badass69 · November 18, 2015

Funny, ours does not run like garbage and we run mostly 87. Just over 1mpg difference noticed when doing back to back comparison. No big butt dyno feel in difference between the two in power or smoothness. Ford says their 6.2 (set up similar to the GM recommending premium) losses 10 hp at the crank between regular and premium (401 vs 411), figure about the same for GM. Can you feel that difference? More than likely not or minimally.

We will continue to use what GM says can be used until it becomes more cost effective or we are towing a heavy load in the summer up some passes just to be safe. No damage will be done otherwise as the motor was designed to run on that octane...

Tyler

No the engine is designed to run on premium... hence the recommendation on the cap. Just because you want some underperforming truck killing itself with knock retard is your thing. Hook a scanner up on 87 and do a data log between the 2 fuels and report back.. oh right... you don't care. Well that's fine. .. it's your truck. Do what you see fit.

Your comparison is likely bogus too as your pcm will likely be stuck in the low octane table and all the other adaptives along with it... so no you won't see or feel a lot one tank to another.

You can buy almost any power train gm offers and run it on regular gas... it's just pointless when the main spark table is tailored to a higher octane. But like I said... it's your truck so I don't really care what you do with it lol.

Sent from a potato

1013_79z28 · November 18, 2015

Thanks to everyone for their thoughts and comments.

From the dealer... "According to the manual, you should use 91 octane or higher gasoline in the 6.2L engine."

Also, the truck sold this morning.

November 19, 2015

If this photo is the current condition of your truck, be proud to drive it. You're doing well. Congrat's for avoiding the temptation and financial trap of immediate gratification. IMHO, you'll be much happier feeling pride of discipline and ownership of this well-maintained vehicle than falling off the wagon to buy a new one.

tnchevy · November 19, 2015

I agree, if that was my 2012 silvy then I wouldn't even think about looking at another truck till 2022 and if that point there is no major mechanical or rust issues then I would wait a few more years. I was going to keep my 2002 till it was at least 15 years old but at 12 years of age both rear quarter panels were rusting out and the rocker panels had holes in them from rust plus all the brake, fuel, and trans lines were rusted pretty bad so I waited till the 2015's were about to come out and got me a 2014 for 25% off the MSRP. I still miss my 2002 and wonder if I should have dumped 5 grand or more in it to fix all the rust and kept on driving it.

ewbldavis · November 19, 2015

For those of us in the rust belt - that is #1 concern and problem. We loved our 2005 Trailblazer (albeit, not as much as the truck ), but old man winter had taken it's toll and the rust was starting to penetrate on most of the doors. Coupled with absolutely terrible gas mileage and a too-heavy camper, we said goodbye after 8 years of good service.

If you rustproofed the 2012 and keep it that clean most of the time, hopefully you can get 12-15 years out of it.

Doobs41378 · November 19, 2015

For those of us in the rust belt - that is #1 concern and problem. We loved our 2005 Trailblazer (albeit, not as much as the truck ), but old man winter had taken it's toll and the rust was starting to penetrate on most of the doors. Coupled with absolutely terrible gas mileage and a too-heavy camper, we said goodbye after 8 years of good service.

If you rustproofed the 2012 and keep it that clean most of the time, hopefully you can get 12-15 years out of it.

Maybe I just get bored easily but I cannot imagine keeping a truck for 10 plus years......

sk · November 19, 2015

^ Indeed, I won't run 87 in anything that "recommends" premium. Forces the vehicle to retard timing etc. Just as I won't put premium in anything tuned for 87 as IMO it's a waste. BUT let's not thread jack into that topic.

Exactly.

According to the Owner's Manual the 6.2L requires premium. You can run lower octane but it makes the engine adjust differently. You will most likely get pinging but even worse all the wear surfaces will degrade quicker (especially the piston bores). Premium gas is recommended for a reason so I wouldn't run lower octane without a tune. BTW -- this comes from a Mechanical Engineer who designs engines (big ones - not the "little" GM 6.2L's ).

I don't want to thread jack either so if you want a more detailed explanation we can start a new thread.

Newell33 · November 19, 2015

As a current owner of a 2014 and a previous owner of a 2011, let's just say that the previous generation trucks are great trucks. Do yourself a favor and keep the one that you have.

Bgctrading · November 20, 2015

I saw laura gmc had some 6.2s at 13-14k off.

1013_79z28 · November 20, 2015

If this photo is the current condition of your truck, be proud to drive it. You're doing well. Congrat's for avoiding the temptation and financial trap of immediate gratification. IMHO, you'll be much happier feeling pride of discipline and ownership of this well-maintained vehicle than falling off the wagon to buy a new one.

That picture was taken a few weeks after I purchased the truck in 2012. It basically looks the same, but I have a tonneau cover on it now. Approximately 30 or so payments to go before it would be paid off.

ewbldavis · November 20, 2015

Take what you WOULD spend per month on a new one, and add it to this one in the interim. Then you won't have 30 more

Doobs - I here ya. In the blood I guess. Love a new car, but like my dad, I tend to keep them. He had a Chevy van for 15 years and his Ram for 13 years.

Who knows - I leased mine and want to keep it, but can't say there isn't a slight chance I turn it in for an '18.