Is there a fuel pump switch on a 1999 Chevy Tahoe?

SOURCE: I need a diagram for 1998 chevy tahoe fuel pump

Do you want a diagram, or do you just want to replace the pump?

SOURCE: fuel pump replacement 1999 chevy tahoe

That has alot to do with the price of the pump, i know there expensive. The thing to do is call an auto parts store and ask what the price is for a pump, once you know that, then you can call around to shops in your area and get there price or labor rates, and that will give you an idea what it will cost. I know its alot of calling but its the best way, so you can guard aginst being riped off. It should not take a good michanic more than 2 to 3 hours to chg. one.

SOURCE: fuel gauge bouncing on 2000 chevy tahoe where is fuel pump relay

I had previously replaced the failing fuel pump on my '98 K2500 when it went out entirely. I was ready to replace my 2000 K3500's fuel gauge as it was acting up.
When I started the engine, the gauge would bounce from the middle to way past full then back. It would also jump sporadically while driving on level ground.
I checked the electrical connections at the tank and made sure the frame ground strap located nearby was making good contact. Nothing changed until I removed the instrument panel and cleaned the connections on the back. The fuel gauge seems to be operating correctly now.
There are videos on YouTube that show how to remove the instrument cluster if in doubt. Mine dash has a pop-in plastic bezel followed by 4 screws to hold the cluster in place. It took about a half hour to inspect & clean the dash connection vs. $250 to replace the pump/sending unit combo. Hope this helps.