How do you change fuel injector 2000 gmc v6?

To change the fuel injector on a 2000 GMC V6, start by disconnecting the negative battery cable to ensure safety. Remove the intake manifold or any components obstructing access to the fuel rail. Then, detach the fuel rail by removing the bolts, disconnect the fuel lines, and carefully pull out the old injectors from the rail. Install the new injectors, reassemble the fuel rail and intake manifold, and reconnect the battery before starting the engine to check for leaks.