Rear blower motor not running 2000 chevy express 5.7 v8, front ac is working great

SOURCE: HARD STARTING PROBLEM

Fuel Filters need to be changed EVERY 15,000 Mi and oil changes once a year maybe,maybe every two years
Common Problem for the cargo is that the distributor gets moisture in it due to the vent being plugged up, And the Cap and rotor have been Known to cause your symptoms use only GENUINE dELCO PARTS IN YOUR VAN TO ASSURE THE PROPER PERFORMANCE

SOURCE: 2003 chevy tahoe no rear heat

I know the earlier tahoe's have two heater lines running from the engine compartment to the rear under the vechile. Those lines could be clogged or pinched shut. What you do is get two hose locking pliers. Go under your truck, they are two metal lines that turn into rubber and back into metal again farther down the line. First, checked for pinched lines. If none, find where the rubber hoses are, clamp them off, remove from metal lines and drain. Use garden hose to flush fresh water through. When water comes through at high pressure and pretty clear, it should be done. Reconnect hoses, top off radiator fluid and it should be fine.

SOURCE: blower motor on 1999 chevy express van works only

Just to add to the previous post. The blower motor resistor is under the hood on the passenger side behind the battery.

SOURCE: Front AC Blower quit working. Rear AC blower

The first thing I would do is check to see if a fuse is blown or bad relay. Then I would unplug the blower motor with a test light make sure you are getting power to the blower located on the far passenger side of the vehicle under the dash if it has power and good ground then suspect vaulty motor. If you are not getting power at the plug then you might have a bad switch or resister. If it does have a blown fuse remember they usually blow for a reason like faulty wiring or even a in the motor itself. I would also recommend that you change the ac cabin filters behind the glove box if they have not been changed most people neglect them on that vehicle because they are a little more difficult to change, after removing the glove box there is a metal bracket in the way of opening the cabin filter compartment. They wont cause a blower motor to not work, however they do restrict airflow to the evaporator and they protect you from pollen, dust, and even exhaust gases. Hope this helps.

SOURCE: 2001 chevy express van 1500,

Inside the van, all the way to the rear, on the side, will have a nice looking panel over it, remove panel and you'll see blower motor, held on with about 6 small screw's.