have the ignition check to see if its worn. if the theftlock/passlock system doesnt recognize the key it wont let it start
TRY TURNING THE KEY OVER.
1998 chevy blazer wont start good spark and good fuel presure
when it wont start
check for a blown fuse.
There is a switch for that. It is in the dash illumination brightness control switch.
dont no
try the fuel pressure regulator
check heater fan to see if it is working.
The engine needs fuel, compression and spark to run. You are missing one of those. Whoever did the install forgot something.
mine does that too
time for a major tune up
Did you replace the fuel filter? If not do so. There may be air in the lines. Use starter fluid to get it started.