A reader asks why GM’s 5.7-liter and 6.6-liter V8 engines aren’t coming immediately to the GMC Yukon. It is a fair question. A reader recently reached out with a big question: “The catastrophic failures of the GM 5.3 and 6.2 are too much for me to overlook because of the safety issue. They don’t have a fix. They are putting the new 5.7 and 6.6 into the pickups. Why are they not putting those engines in the Yukon?” While it may seem ridiculous for GM to wait to put these new engines in every vehicle in their lineup, the reasons are […] (read full article...)