caseyjones955, my experience with GM during the last ten years is different from your observation. I bought a new 2009 GMC crew cab Canyon (Chevy Colorado) during the 2009 'Cash for Clunkers' late summer offer, w/the DOHC inline 5-cyl aluminum 'Atlas' engine, 3.7 liters (223 cu. inches; 242 HP & 242 ft lb torque) G80 limited-slip differential, 2WD; SLE2 package (power everything except seats; tilt, cruise, traction control, trailer package, including wiring for electric brakes; chrome running board tubes; AM/FM/CD/Sirius-XM; driving lamps; aluminum rims, etc. I now have over 110,000 miles, the engine has been fine, transmission too, one replacement of brakes all-around, one battery, and a couple of burned-out bulbs. Best mileage has been just over 23 MPG (expressway), though most of my driving is around town, 17 MPG. I would buy another. The new design Colorado/Canyon get better gas mileage though the V6 they now offer as the upgraded powerplant (3.6 liters, like the Cadillac SUV's and sedans/coupes) has more-than 20% additional HP.
My usual riding partner is a HVAC master license holder/ small business owner. He could drive anything he wanted. He buys Silverados and has a Chevy SUV for his wife, all new, he sells them after about 5 years, and has had similar experiences. GM I believe makes a good product, I'd rather have a used Silverado than a new Ram. In my case, I can use a mid-size truck instead of a full-size. It has a speed limiter (my GMC Canyon) but if you want to buy the software to override it, the guys on the 355nation.net forum, with the same engine and rear end package tell me it's good for a bit over 125 mph. I haven't bothered, my needs don't include "go-to-jail" truck speeds.