Question about 1984 Dodge Pickup 4WD

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Replacing heater core in 03 dodge ram pick up truck 4 door with 5.7 engine

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Hello,

STEP 1 Disconnect and isolate the battery negative cable.


STEP2 Remove the instrument panel. STEP 3. Recover the refrigerant from the refrigerant system,

step 4 Disconnect the liquid line refrigerant line fitting from the evaporator inlet tube. Install plugs in, or tape over all of the opened refrigerant line fittings.

step 5 Disconnect the accumulator inlet tube refrigerant line fitting from the evaporator outlet tube.Install plugs in, or tape over all of the opened refrigerant line fittings.


step 6 Drain the engine cooling system.


STEP 7 Disconnect the heater hoses from the heater-tubes.Install plugs in, or tape over the opened core tubes. Remove the Powertrain Control Module (PCM) from the dash panel and set it aside, but do not unplug the PCM wire harness connectors.


STEP 8 Remove the nuts from the heater-A/C housing mounting studs on the engine compartment side of the dash panel.

STEP 9
Remove the nuts that secure the heater A/C housing to the mounting studs on the passenger compartment side of the dash panel Pull the heater A/C housing rearward far enough for the mounting studs and the evaporator condensate drain tube to clear the dash panel holes. Remove the heater A/C housing from the vehicle. STEP 10
Remove the screws and retainers that secure the heater core to the heater-A/C housing. Lift the heater core straight up and out of the heater-A/C housing.

Posted on Aug 23, 2010

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Posted on Jan 02, 2017

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