A few minor design issues but overall bulletproof
May 24, 2018
GM made millions of these also called a Sierra in GMC nameplate. The legendary small block 5.3 is a great engine and has the history to back it up. While others have tried, no one can dispute that when all things are considered, this engine is better than anything from Japan or Detroit. That being said, I still wonder why the GM engineers still have trouble with exhaust manifolds/gaskets, knock sensors, and coolant leaks. Equally as odd is why they can't seem to make a wheel bearing, window motor, door switch or brake rotor last more than 60K while the power-train can go on forever! The vehicle drives accurately, brakes well, and feels stable. Seating is adequate and the controls are logical and placed well. No hunting for the right knob and no pulling up a menu to change the radio station! (yes, some ask you to do that) Maintenance is simple and cheap. Parts readily available and finding aftermarket parts and customization is endless. I've had several including one with 250,000 miles and still no sign of quitting.