Where under the hood would my fuse box be for a 1997 jimmy gmc truck my power windows dodesn;t work

SOURCE: HAVE A 03 GMC SIERRA

I had the same problem in my wife's 2003 Yukon Denali. The power seats and passengers side window wouldn't work. Turned out to be a blown Buss Type fuse in the Underhood Fuse Block. It is the one marked MBEC 1 50amp. Hard to tell if the are blown so look very carefully. Should look like a hoop with two shiny solderlooking bubbles on either side. On my blown fuse, it caught my attention because it looked like the solder was missing and I had to look very closely to see the bottom of the "hoop" was open. They are very hard to remove and must be pulled straight up.
This type of fuse looks like a red square with a clear plastic top showing the fuse link under the plastic. On my vehicle it is on the top row second one from the left.

SOURCE: How do you remove the door panel on a 1997 GMC 1/2 ton trucks?

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008f768
Hope this helps!

SOURCE: Replace glass, drivers door on 1997 GMC 1/2 ton Truck ,2wd, Power windows

you might also have to drill out the rivets that hold the lock actuator on to be able to manage the last roller into the scissor assembly. Use larg 1/2 in sheet metal screws to reattach.

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SOURCE: 1996 jimmy gmc fuse box

Look on the driver's side fender well under the hood. Should be a long black rectangular box there. That is the power center or fuse block. The relays and fuses are inside. The top is not hard to remove. Hope this helped and best wishes.

SOURCE: Drivers side power window, power lock, power

The power window switch is actually a drivers door module. They are common for going bad. You have a bad one.