The ultimate problem for GM, and why good ol' Bush has all but killed the Amercian Auto industry, is that they sell a million trucks every year... at least they did before fuel cost you a limb and a half per gallon. I was just wondering, I thought that trucks over a certain GVW were not held to that fuel economy standard, and therefore would not be counted in with all the rest of the vehicles for the corporate average of 35 MPG. Why couldn't GM classify all the high volume trucks, ie the fully loaded Z-71 and all the stripped down work rated trucks, as "heavy halfs." Raise the GVW on the vehicles that they sell the most of, and therefore eliminate them from the count.
I also think it would be foolish to not investigate the advantage of a 240hp turbo I4 replacing a 240hp 3.9L V6.
Instead of putting a 5.3L in everything, why not look at down sizing to the 4.8L turbocharged or shrink it to a 4.0L V8 with a couple of turbos.
I don't think any truck owner is going to like replacing a big V8 with a turbo V6, why not replace it with a smaller turbo V8. (maybe with VVT, DI, AFM)
The new 4.5L Duramax couldn't get here any faster, But they should also look at the 2.9L Diesel for all of the cars. Though I'm told that that diesel doesn't work for California, screw California, let them drive Volts and Aveo's.
They should also look at a RWD CUV platform that would have 4WD with Low range as a possible replacement for the Tahoe, and maybe the Yukon and XL. The Acadia and it's sibblings are great vehicles with incredible space, but they don't haul the kind of weight that some SUV owners need (besides, FWD biased vehicles define light duty hauler. A rear drive V8 (or turbo V6) CUV beefed up to offer more space than a Tahoe because of the effeciency of CUV design, beefed up to pull 7000lbs might convince Tahoe owners to settle for a CUV, and would be lighter and more fuel efficient the the BOF.
With the technology they are putting into these vehicles, why couldn't they put an economy mode on some of there vehicles? Think about the Cobalt SS T/C. They have performance mode with Launch Control, couldn't they have economy mode where they dial back the boost, fuel, timing and detune the engine for max effieciency? In stop and got traffic, you don't need much power, so cut it off to save fuel.
Even if GM meets the new CAFE limits, the Automotive Journalist will squash them anyway. All the new vehcles GM makes are appearently not as good as Honda, because it doesn't ride like a Honda, or feel like a Honda. Of course it doesn't it isn't a Honda, but the auto jounalists like the feel of a Honda, therefore the GM isn't as good. Case in point, the CX-9 beat the Enclave because it is more of a drivers vehicle. Even in an eight passenger, they want the one that will take the corner the fastest, not the one that rides the best or has the best balence.
Unbiast Journalism, and some new vehicle innovation, and GM will be fine, God I hope they do other wise I will always drive older vehicles.
one last point, the heavy tax on fuel and it's high price is supposed to be a fuel saver to reduce emissions, but because I can't afford to drive my truck, I just ride my 1981 smog machine of a motorcycle that pollutes way more than my truck in spite of getting 3 times the mileage. Yah good call.