You push a truck hard enough – even a heavy duty model – and something’s going to give. When mechanic Dave Adair cracked the diff locker on his 2007 Chevy 2500 HD, he decided to step up to something ...

Everyone who has wheeled an open diff vehicle at one time or another knows the feeling. You’re halfway up a rutted hill or off-camber ledge. You’ve got the transfer case in low range and you can feel ...