2009 Engines For Gmt-900

[SilveradoCJ7]

Has anyone heard what engines GM will offer in the half tons for 09? I know Ford and Dodge will be putting out new trucks as well as new engines. Toyota already has the 5.7L that beats the 6.2L with a much smaller displacement. I was a little dissapointed that GM was unable to develop a new engine for there new trucks. The 5.3 is a great engine and runs very realiably but it fells weak somtimes excspecially if the A/C is on. The 4 speed is outdated.

 

GM has allways been a leader in the powertrain dept of there trucks. Plus they have so many lines to pull ideas from. The new CTS has Direct injection and many other features that improve engine performace that should make there way into trucks.

 

I hope they dont leave things the way they are and get killed when Ford and Dodge drop there new trucks.

[cc1999]

The word I herd for the 09 model year is, that the 6.0 Max is being replaced with the 6.2 and the 6 speed should be available with it as well as the 5.3.

 

I agree the 5.3 was lacking from the start, I had a 99 Suburban that had the 5.7 / 350 vortech that handeled our camper much better than any of the 5.3s I have had since then. The 5.3 is ok around town, but in the hills, pulling a load, or just about any job that needs low end torque, its always seemd weak to me. I can't wait till the 09's come out. Prety much accross the board from the all new Dodges and Fords to the improved powertrains in the GMs, the 2009 models will be better trucks than any of the cary over 08's IMO.

[redvett]

There are two things GM trucks do better than anyone else's do and that is fuel economy & comfortable ride. No one compares.

[Gozer]

4.5L turbo-diesel should be sweet, though it may not be unitl 2010:

 

http://www.gm.com/explore/fuel_economy/new...esel_061807.jsp

[redvett]

Trade magazines say that the Diesel isn't going to be cost effective once the Homogeneous-charge compression ignition engines come on line. They run gas are direct injected & no ignition and lots of performance & very low emissions. There will be only a 2-3 mpg difference without the $4000 to $8000 cost.

[VMax2007]

The word I herd for the 09 model year is, that the 6.0 Max is being replaced with the 6.2 and the 6 speed should be available with it as well as the 5.3.

 

I agree the 5.3 was lacking from the start, I had a 99 Suburban that had the 5.7 / 350 vortech that handeled our camper much better than any of the 5.3s I have had since then. The 5.3 is ok around town, but in the hills, pulling a load, or just about any job that needs low end torque, its always seemd weak to me. I can't wait till the 09's come out. Prety much accross the board from the all new Dodges and Fords to the improved powertrains in the GMs, the 2009 models will be better trucks than any of the cary over 08's IMO.

 

 

Partially correct. The 6.2 is replacing the 6.0. Not sure it'll be in 09 though, I heard 10/11. Also, the 6.2 will be DI and will be available on the upscale Denalis and Escalades only. It will be couipled to a 6 spd tranny. But the 5.3's will be DI, but no 6 spds on the 5.3's.

 

I also heard GM is worklng on a DOHC DI 6.2 engine, not sure when that will be produced though.

[redvett]

Remember all new truck comming out in 2011.

[C & A s Dad]

Trade magazines say that the Diesel isn't going to be cost effective once the Homogeneous-charge compression ignition engines come on line. They run gas are direct injected & no ignition and lots of performance & very low emissions. There will be only a 2-3 mpg difference without the $4000 to $8000 cost.

 

 

Could you elaborate on the Homgenous-charge compression ignition engines? I really hate to admit it because I consider myself a car nut, gear head, enthusiast etc etc but a I have never heard this terminology before now.

[redvett]

Trade magazines say that the Diesel isn't going to be cost effective once the Homogeneous-charge compression ignition engines come on line. They run gas are direct injected & no ignition and lots of performance & very low emissions. There will be only a 2-3 mpg difference without the $4000 to $8000 cost.

 

 

Could you elaborate on the Homgenous-charge compression ignition engines? I really hate to admit it because I consider myself a car nut, gear head, enthusiast etc etc but a I have never heard this terminology before now.

 

 

They are direct injected and use no ignition system and little or no emissions systems. They are similar to a diesel but use gas. 3.6L car engines are making around 375hp in testing.

[cc1999]

Seems like I herd something about that design. Is that the one that is kinda like a diesel in some ways but cleaner, and runs on gas.

[Draenor]

Trade magazines say that the Diesel isn't going to be cost effective once the Homogeneous-charge compression ignition engines come on line. They run gas are direct injected & no ignition and lots of performance & very low emissions. There will be only a 2-3 mpg difference without the $4000 to $8000 cost.

 

 

Could you elaborate on the Homgenous-charge compression ignition engines? I really hate to admit it because I consider myself a car nut, gear head, enthusiast etc etc but a I have never heard this terminology before now.

 

I had to look this up myself. From what I read, it pretty much how a diesel motor works but on a gas motor. Gas and air mixed under extremely high enough compression till it ignites to produce the combustion.

[redvett]

Actually the process is to inject gas at precisely the right time and length of time across the combustion process to provide a very clean burn and plenty of power. Since it is direct injection there is no throttle body,EGR,AIR. Lots of power and not the cost of a Diesel.

[wildbill]

I have the 5.3 with the 4spd. The power is sufficient for me and my needs, however, the tranny definetly needs one more gear for cruise. At 80mph its at 2300 rpm which seems high. If it was at least a 5 spd, you would get better fuel economy at lower rpm and then in your tow, haul mode you would be back in 4th gear at 2300rpm, the beginning of the power band.

[SinisterSS]

The big Ts engine is not "better" than a GM 6.2L in anyway that I can see. Get the facts straight before spewing MORE of their PROPAGANDA.

[redvett]

Driving 80 mph is fuelish and dangerious in a pickup or SUV because the center of gravity is so high and rollover is a real possibility.