Needs new plugs and wires or just a good tune-up.
its bolted to the block.. just follow the cord its not hard...
Hard to start as in??? Hard turning over - check connections at starter & battery, Turns but won't fire - check tuneup & ignition areas
have vehicle scanned to determine the problem
check you idle control valve it can cause those symptoms also your throttle positioning sensor
# it could be the batte or the olternater
Poor maintenance and/or bad ignition coil.
Yes
BAD power brake booster are a vaccum leak at the booster.
its hard you have to take the whole dash out to reach it i had a camaro and it was b****
it may be out of time have your timing checked
because its a ls1
under the passenger seat but its hard to removed it