I've to be trying' to resolve my wife's heater. Yet to no prevail, mine last source is to disconnect heater core and also flush it. Blows an excellent air, readjusted cabin filters, thermostat, the door functions good, core gets warm to touch.


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inspect to view if power is going come actuators top top heater crate itself. Onedirects temp the various other direction. Pic enclosed.
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how do you replace the heater main point in a 2003 Pontiac Montana 3.4. Where is it and how lengthy does it take to change.
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Heater main point Cover ReplacementRemoval ProcedureRemove the floor waiting outlet duct. If equipped, disconnect the DVD wiring harness from the I/P assistance bracket.Remove the screws retaining the heater core cover.Remove the heater core cover.Heater main point ReplacementTools forced J 38185 water tap Clamp Pliers. Removal ProcedureDrain the cooling system. Eliminate the left wiper arm affiliation nuts.Reposition the left wiper arm affiliation for access.Disconnect the vacuum water tap from the brake booster and also reposition.Remove the waiting cleaner cover and intake tube. Important: Disconnect the throttle and also cruise control cables to avoid bending the cable housings.Disconnect the throttle and cruise regulate cables from the TBI mounting bracket.Remove the transmission fluid filler tube. Disconnect both of the heater water tap clamps in ~ the heater core making use of the J 38185. Remove the heater hoses from the heater core.Important: lid off the heater main point inlet and also outlet pipes to prevent coolant spilling inside of the vehicle.Cap turn off the heater core pipes.Remove the heater core cover. Eliminate the heater main point pipe retaining clamp screw.Remove the heater main point from the HVAC module.Installation ProcedureInstall the heater core to the HVAC module.NOTE:Refer come FASTENER notice in Cautions and Notices. Install the heater main point pipe retaining clamp screw.Tighten Tighten the screw to 1.6 N.M (14 lb in).Fig. 341: installation Heater main point Pipe Retaining Clamp ScrewCourtesy of general MOTORS CORP.Install the heater main point cover. Download the heater hoses to the heater core.Reposition the heater water tap clamps come secure the hoses utilizing the J 38185. Install the transmission fluid filler tube. Install the wait cleaner cover and also intake hose. Attach the throttle and also cruise manage cables come the TBI mounting bracket.Connect the vacuum hose to the brake booster.Install the left wiper arm linkage.Install the left wiper arm link nuts.Tighten Tighten the nuts come 5 N.M (44 lb in).Fill the coolantInstallation ProcedureInstall the heater main point cover.NOTE:Refer come FASTENER notice in Cautions and Notices. Download the heater main point cover retaining screws.Tighten Tighten the screws come 1.6 N.M (14 lb in).If equipped, affix the DVD wiring harness to the I/P assistance bracket.Install the floor wait outlet duct