C 30 1 Ton Pickup 2WD V8-350 5.7L VIN M 4-bbl (1983)
Heater Core: Service and Repair
Fig. 23 Heater distributor assembly. C, K, R & V models less A/C
C, K, R & V MODELS
Less A/C
1.
Disconnect battery ground cable, then drain cooling system.
2.
Disconnect heater hoses at core, then plug core tubes to prevent coolant spillage.
3.
Working from engine compartment, remove distributor duct stud attaching nuts.
4.
Remove glove box and door assembly.
5.
Disconnect air-defrost and temperature door cables.
6.
Remove floor outlet, then the defroster duct to heater distributor duct attaching screw.
7.
Remove heater distributor to dash panel attaching screws, Fig. 23.
8.
Pull distributor rearward, then disconnect all harnesses that will interfere with distributor removal.
9.
Remove heater distributor from vehicle.
10.
Remove heater core retaining straps, then the heater core.
11.
Reverse procedure to install.
