[GM] also has to quit sister vehicles.
Does quitting sister vehicles really help the situation, though?
GM is a mess, no doubt. They really need to sort out their brands into some type of cohesive spectrum. Having all brands have vehicles in all segments just means that you're competing against yourself. But that doesn't necessarily mean doing away with the sister vehicles.
I could see GM arranged as such:
Saturn -
SEGMENT: Small, green cars. Drop the SUV/van/crossovers out of this line.
NICHE: Keep the friendly dealer image thing going on.
NOTES: I think Saturn should stay. A lot of money was spent building the brand. It seems foolish throwing that away at a time when small cars are finally coming back in fashion...
Chevy -
SEGMENT: Full product line. Base models only, low feature vehicles.
NICHE: Try to market dependable American value.
EXCEPTION: Corvette stays, and still offers upscale features.
Pontiac - (optional, depending on funds/situation)
SEGMENT: Cars only. Platforms tightly shared with Chevy. Performance features highlighted.
NICHE: Sell as an affordable driver's car.
NOTES: First optional brand on the chopping block if things go badly......
Buick - (optional, depending on funds/situation)
SEGMENT: Mid-level luxury cars and crossovers. Again, platforms tightly shared with Chevy. Basically the higher trim level, higher feature Chevy's, tuned for luxury.
NICHE: Entry level luxury.
NOTES: Second optional brand on the chopping block should things go sour.....
Cadillac -
SEGMENT: Modern Luxury
NICHE: Same
NOTES: This is probably the only healthy brand GM has. Could probably use a few of the SUV/Crossovers trimmed from the lineup.
GMC -
SEGMENT: Work Vans/Trucks
NICHE: Contractor sales, fleet vehicles.
NOTES: Is it really price prohibitive to print a GMC badge and slap it on the place you'd normally put a bow-tie? That should be the only difference between the GMC and the Chevy. This badge change can help keep fleet sales from screwing up Chevy truck resale values, though.
HUMMER - (Sell/Liquidate/Close)
NOTES: Sell it to anyone you can find. If you can't find any buyers, consider liquidation methods. It's nothing but losses and bad PR.
Saab - (Drop from US)
NOTES: This brand may be valuable in Europe. Consider how to use Chevy platforms to fill the lineup.
Opel, Vauxhall, Holden - (Overseas only)
NOTES: Again, these brands may be valuable in Europe and Australia. Consider how to fill the lineups cost effectively (platform sharing) while using as many shared parts as possible. I'm not really familiar enough with the overseas market to sort these out...
So, there you'd have it. Still a lot of sister vehicles, but that isn't a bad thing, so long as they aren't competing with each other.