If it is a new body style... Extend the headrest to the fully extended position. Look at the plastic "collar" surrounding the metal post. One of them will have a small hole. Use a drill bit or small nail and insert it into the hole. Push in with a little pressure and pull the headrest out.
how to remove and install fenders on my 1994 gmc sierra
The 2007 GMC Sierra-1500 has 16 valves.
The 2007 GMC Sierra-2500HD has 16 valves.
The 2007 GMC Sierra-3500HD has a V8 engine.
The 2007 GMC Sierra-3500HD has 16 valves.
The 2007 GMC Sierra-1500 has a V8 engine.
The 2007 GMC Sierra-2500HD has a V8 engine.
The 2007 GMC Sierra-2500HD has overhead valves (OHV).
The 2007 GMC Sierra-1500 has overhead valves (OHV).
The 2007 GMC Sierra-3500HD has overhead valves (OHV).
The 2007 GMC Sierra-2500HD is a gas-powered vehicle.
The 2007 GMC Sierra-3500HD is a gas-powered vehicle.