If you’re about to head to a local dealership to get your hands on a new GMC Canyon and Chevrolet Colorado, put those plans on hold as General Motors has issued a pause on sales for all of its new midsize pickups after identifying software issues during validation of the vehicles. Luckily, this issue shouldn’t take too long to remedy as the company already has a fix. Chevrolet Colorado & GMC Canyon Stop Sale: DetailsAccording to The Detroit News, General Motors has already started implementing the fix for its midsize trucks and started sending it to dealers on Monday. The automaker expects the…