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If you have checked all the fuses and for unplugged connections of frayed or damaged wires, the next step would be to remove the drivers door panel, carefully, and check for voltage at the switch. If it is okay, and the switch is okay, remove the door panel on the Passenger side, check for voltage at the regulator motor while pressing the switch. If it is present, replace the regulator.
1. Check power window fuse
2. Check and or replace drivers door power window switch. The passengers power window gets it power through the drivers door switch so if the drivers door switch is out it will take out the passenger window power.
If the drivers side does absolutely nothing, there is a chance that power plug that goes into the door has come apart. There is a rubber boot that goes from the cab to the door, that is where the wires run. The power plug is usually right before the boot or right after.
Check the power Window Relay Fuse which should be located in the engine compartment relay fuse box. This fuse is a bigger square or rectangle with a black plastic or metal looking case. unlike the tiny colored plastic glass looking type you see in the inside fuse panel
Have you checked with a volt meter that you are getting 12volts at the switch? If you have voltage coming to and going out of the switch then your problem is the motor that raises and lowers the window. There are many Ebay vendors that sell replacement motors for way less than a factory brand unit. Search for Tahoe power window motor - I got lots of hits, cost around $38. Changing it takes a little time and effort (about 3 wrenches hard) but can be done if you want to save a bunch of bucks.