Replacing rotor cap for 2004 chevy trail blazer

Question edited for clarity
Question moved to model category.

Connect it to an OBD Code Reader and check for trouble codes.

Help in the link

https://www.google.com/search?q=1994+Chevy+S10+Blazer+4.3+no+spark

..

Drain down some of the coolant if possible. Undo the bolts, undo and remove the hoses. Reconnect the the hoses, bolt down the new one. Top up with coolant.

https://www.google.com/search?q=1975+Chevy+Trail+Blazer.+How+to+replace+overflow+tank

..

This should help

misfires are from mechanical faults ( loose valve seat insert, problem hydraulic tappets 0 injectors -- wiring,injector tips , low fuel pressure ECM to electronic problems , plug, HT lead distributor cap (if no multi coils) rotor button, coils and ignition control module
run the fault codes to get closer to the fault

It sounds like a electrical problem with the rotor and cap, replace the cap and rotor. How To Install Replace Cap and Rotor Chevy GMC S10 Blazer Jimmy Pickup...

5w30 should tell right on oil cap

if the light doesnt come on the compressor is not engaging the clutch. possible wiring problem. check a/c clutch relay. may be faulty compressor or the system may be completely empty of refrigerant

Check the plug wire from the ignition coil to the distributor cap.
If you haven't already, replace the distributor cap and rotor.
The GM Vortec's have issues with moisture getting inside the cap and rotor and causing problems.

I’m happy to help further over the phone at https://www.6ya.com/expert/jason_00b31cc8f593773a

Typically it is a 255/65R/17 or 255/70R/17

On 05+ Trail Blazer, the fuel filter is integral with the fuel pump inside of the fuel tank. It is a non-serviceable part. On 02-04s, the filter is on the drivers side frame rail at about the B-pillar. If your trail Blazer is a late 04 which means that it was build close to the 05 Trail Blazer, you may have a non serviceable fuel filter. Good luck and check under your Trail Blazer or look at your manufactured date sticker on the door which would help you indicate if your 04 is a early Trail Blazer and you'll have the fuel filter on the inside frame rail under the driver's door.