Its on the low side (suction side) from the compressor to the accumulator........
On the 2000 Chevy Silverado, there are two horns. Both are mounted on the front of the vehicle. One on each side of the radiator near the bottom.
it's under the drivers side dash
Look for a leak in the port-side vacuum.
right side bottom rear of engine were it bolts to transmission
Inside the main frame rail on the driver side of the vehicle.
passengers side about a foot down between firewall and engine!! it has an "L" on the cap.
Located on the left side under the hood with a lid labeled "Electrical" and immediately inside the driver door on the dash side panel. 2000 Chevy Silverado LT Ext Cab 4 dr 5.3L 4x4 Z71 Driver.
passenger side of the waterpump. right by where your heater hoses connect onto the pump housing.
It is on the left side of the engine. You will see a coil and that is the module also. It is one unit.
Standing in the front of the engine it will be on the bottom back left side of the engine. Will have to lay under the truck to see it.
Yes, Chevrolet Silverado's have side steps. You can have them installed at a Chevy dealer or through a third party.
They are on the passanger side of the transmission, They come out of the side of the trans and run up the side of the engine and hooks to the RADIATOR. Just follow the lines from the transmission. There are 2 of them.