My 1998 Silverado Fuse Box has two 20Amp Circuit Breakers (Door Locks & Power Windows).
Every wiring diagram I find shows the CB "A" Door Locks as 20Amps and CB "B" Power Windows as 30Amps.
Because of its age, perhaps the CB "B" was changed over the years.

And sure enough the Yellow feed for the Windows is the heavier gage wire.

Can anyone validate the Circuit Breaker ratings for your 1998 vintage Silverado?.

 

depends on the build....some show a door lock control module.
the other i found shows a 30amp breaker for the power windows and a 20 amp pwr accessory breaker for the door locks reg and ex cab....30amp except reg and ex cab

 

If your box say 20a on it, that's what I would stay with, regardless of wire size

 

Thanks guys. I appreciate you taking the time to respond. I'll move ahead with both 20Amp C.B.s

 

I have 2 20’s in mine. One of them is in that spot labeled for a 30. Everything works fine.

 

Yep, looks just like my fuse box.
I think I am ready to put the wiring issues behind me and move on to some other needs she has.
I'll be back with searches and questions. I love my 98.