To replace the expansion valve on the rear AC of a 1992 GMC Suburban, first ensure the AC system is fully discharged to avoid refrigerant exposure. Remove the rear AC unit's cover and disconnect the refrigerant lines connected to the expansion valve. Remove any mounting screws or bolts securing the valve, then take out the old valve and install the new one, ensuring proper orientation and sealing. Finally, reconnect the refrigerant lines, reassemble the AC unit, and recharge the system with refrigerant.
how do you replace the expansion valve
It is on the back left hand side of the intake close to the left valve cover
Need to check the EGR valve.
insid ac box at floor board.
Attached to Evaporator.You have to remove the evaporator from inside the car to get to it. A pain.
Do you still need some assistance?
The expansiion valve is loacated in the car behind the firewall under the console. Complete removal of the console and hvac controls is needed.
On your valve cover you will see a white short plastic tube with vaccum lines attached. Pull out the hose and pull the pCV valve right out of the valve cover .
The vacuum control valve for the heater on a 1992 GMC Suburban is typically located on the heater control assembly, often behind the dashboard. To access it, you'll need to remove the lower dash panel and possibly the center console, depending on the specific configuration. Once you have access to the heater control area, you can locate the vacuum lines connected to the valve. Be cautious with the electrical connections and vacuum lines during removal and installation.
bring it to transmission shop
After replacing the fuel filter and checking the fuel pump fuse and relay it still does not work, replace it.
The Beasts of Suburban was created on 1992-07-20.