Just a quick update on my previous review. First, my problems with dis- engaging brakes and abrupt transmission shifts have been solved. The dealer where my Sierra Hybrid was sourced neglected to update my software. Updating software fixed the brake problem and a faulty transmission pump fixed the gear shifting problem. My Sierra now drives just like a standard Sierra and I'm a huge fan and I can confidently say that I would absolutely recommend this truck.
Gas mileage. Exterior appearance. Simple interior.
GM still needs to work on the electric assist when towing. I've noticed some jerking when using cruise control when going up hills. Nothing serious but not as smooth as a non-Hybrid.