I have a 98 yukon which is having trouble starting. I have a brand new battery. How do i know if is the starter or carbureator

check battery cable connectors remove them and clean them

key --ignition switch--solenoid --failure

Make sure your engine is not seized up. If the engine cannot rotate, neither will the starter. Next step is to determine that the car can control the starter. Easiest way to do this is to jump the battery and solenoid wires at the starter, in the car, while it is in park or neutral, with the ignition on. If the starter can be made to manually start the vehicle, the problem is in the control circuit. If not, either the new starter is no good or you still have power cabling or battery issues.

does the engine turn over? have you checked the starter motor?

sounds to me like your starter isn't shimmed correctly common problem for the 5.0l and 5.7l. your starter isn't meshing with your fly wheel correctly and causing unnecessary strain cause the problems you stated.

Check battery voltage, should read 12.5 volts or more. Just because it its new, doesn't mean it is charged to full voltage. If battery is fully charged, and connections are good, then I would look at the starter relay or starter motor.

Recently we had to put a new fuse in the starter ???????????? What fuse ? location , size . A fuse blowing means a electrical short to ground .

A mechanic would check for voltage at the starter, the neutral safety switch, and the key switch. Then check the battery cables and ground connections.

id make sure the fuses and relays didn't pop for the starter while installing as if it was intstalled wit the battery still connected it could have arched it causing them to blow. then id make sure the battery was good and so was the alternator first thing. second, make sure all ur connections are good ie battery ground as well as wires on the starters solinoid.

its eather th starter or something else