Question about 1999 Chevrolet Camaro

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How do you replace the heater hoses on a 1999 SS Camaro v8

1999 SS Camaro V8 5.7L, need steps to replace heater inlet and outlet hose assembly. I need the steps to replace my heater inlet and outlet hose assembly. Need to know what parts I need to loosen and move out of the way and approximately the time it will take. Don't seem to have much room and I don't have a lot of time to do it.

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  • Chevrolet Master
  • 4,514 Answers

U need to get some service manuals-do u like mech work ur gonna learn by goin to library sec 629-chilton and mitchell autopedias by year n make-take it slow n test drive

Posted on Sep 11, 2009

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How to replace the heater core to a chevy astro 2003


  1. Drain the engine coolant.
  2. Reposition the outlet heater hose clamp at the heater core.
  3. Remove the outlet heater hose from the heater core.
  4. Reposition the inlet heater hose clamp at the heater core.
  5. Remove the inlet heater hose from the heater core.
  6. Remove the screws that retain the cover to the heater case assembly. This is located underneath the dash on the passenger side.
  7. Remove the straps that retain the heater core to the heater case assembly.
  8. Remove the heater core from the vehicle.

Sep 05, 2011 | 2002 Chevrolet Astro

1 Answer

2006 grand prix heater only blows cold air. both heater hoses are hot blower motor works fine.


Sounds like the temperature blend door actuator may be bad or the vacuum hose to it is disconnected.

Poor Heater System Performance CAUTION
Check all fluid levels and adjust as needed, before operating vehicle for extended periods at idle.
  1. Start the engine.
  2. Idle the engine until the thermostat opens (upper radiator hose will be hot) Is the engine at normal operating temperature (approx. 200° F)? If yes, go to the next step. If no, go to step 16.
  3. Set the mode selector to FLOOR mode.
  4. Set the heater control selector to the warmest temperature setting.
  5. Set the blower speed the lowest setting.
  6. Carefully feel the inlet and outlet heater hoses at the heater core. Is the inlet heater hose significantly hotter than the outlet heater hose? If yes, go to step 14. If no, go to the next step.
  7. Set the mode selector to PANEL mode.
  8. Select the maximum blower speed.
  9. Select the warmest temperature setting.
  10. Place a thermometer into the center I/P PANEL air outlet and affix a second thermometer to the heater core outlet heater hose.
  11. Record the temperature at the center I/P PANEL air outlet and at the heater core outlet heater hose. Are the two temperature readings about equal? If yes, go to the next step. If no, go to step 13.
  12. Inspect and repair the cowl, cowl area, recirculation door, and the HVAC evaporator/heater core case for cold air leaks. Repair any problems found, go to step 17.
  13. Inspect the temperature door operation. Repair any problems found, go to step 17.
  14. Turn OFF the engine. Back-flush the heater core. Start the engine. Select the FLOOR mode and the lowest blower speed. Select the warmest temperature setting. Feel the temperature of the inlet and outlet heater hoses at the heater core. Is the inlet heater hose feel significantly hotter than the outlet heater hose? If yes, go to the next step. If no, go to step 17.
  15. Replace the heater core. When the repair is completed, go to step 17.
  16. Check for low engine temperature problems, Repair or replace as needed, go to step 17.
  17. Operate the system in order to verify the repair. If the system operates properly, the repair is complete. If the heater still does not work properly, repeat the entire procedure.

Nov 19, 2010 | 2006 Pontiac Grand Prix

1 Answer

The heat in my 2006 grand prix will not get hot. We replaced the thermostat and got nothing. So I got the radiator flush and force filled again. Still nothing. Temp of the motor still gets to the middle,...


Are the 2 tubes that go to the heater core getting hot? If so, then the blend door is not opening to allow heat to get to the cabin.

Possible vacuum motor problem, either disconnected, or the controller for the blend door is broken is likely problem.

Troubleshooting by Symptom Poor Heater System Performance CAUTION
Check all fluid levels and adjust as needed, before operating vehicle for extended periods at idle.
  1. Start the engine.
  2. Idle the engine until the thermostat opens (upper radiator hose will be hot) Is the engine at normal operating temperature (approx. 200° F)? If yes, go to the next step. If no, go to step 16.
  3. Set the mode selector to FLOOR mode.
  4. Set the heater control selector to the warmest temperature setting.
  5. Set the blower speed the lowest setting.
  6. Carefully feel the inlet and outlet heater hoses at the heater core. Is the inlet heater hose significantly hotter than the outlet heater hose? If yes, go to step 14. If no, go to the next step.
  7. Set the mode selector to PANEL mode.
  8. Select the maximum blower speed.
  9. Select the warmest temperature setting.
  10. Place a thermometer into the center I/P PANEL air outlet and affix a second thermometer to the heater core outlet heater hose.
  11. Record the temperature at the center I/P PANEL air outlet and at the heater core outlet heater hose. Are the two temperature readings about equal? If yes, go to the next step. If no, go to step 13.
  12. Inspect and repair the cowl, cowl area, recirculation door, and the HVAC evaporator/heater core case for cold air leaks. Repair any problems found, go to step 17.
  13. Inspect the temperature door operation. Repair any problems found, go to step 17.
  14. Turn OFF the engine. Back-flush the heater core. Start the engine. Select the FLOOR mode and the lowest blower speed. Select the warmest temperature setting. Feel the temperature of the inlet and outlet heater hoses at the heater core. Is the inlet heater hose feel significantly hotter than the outlet heater hose? If yes, go to the next step. If no, go to step 17.
  15. Replace the heater core. When the repair is completed, go to step 17.
  16. Check for low engine temperature problems, Repair or replace as needed, go to step 17.
  17. Operate the system in order to verify the repair. If the system operates properly, the repair is complete. If the heater still does not work properly, repeat the entire procedure.
Air Door Actuators/Motors Removal & Installation Recirculation Actuator To Remove:
  1. Remove the right lower instrument panel (I/P) insulator.
  2. Remove the glove box assembly. Recirculation actuator (Typical) gm-10-00-3695.gif

  3. Remove the mounting screws and recirculation actuator from the HVAC module assembly.
  4. Disconnect the recirculation actuator harness connector.
To Install:
  1. Align the recirculation actuator slots with the flats on the actuator door shaft.
  2. Install and secure the recirculation actuator on the HVAC module assembly with the mounting screws.
  3. Connect the recirculation actuator harness connector.
  4. Install the glove box assembly.
  5. Install the right lower I/P insulator.
  6. Calibrate the recirculation actuator.
Mode Actuator To Remove:
  1. Remove the right lower instrument panel (I/P) insulator.
  2. Remove the glove box assembly. Mode actuator gm-10-00-4356.gif

  3. Remove the mounting screws and mode actuator from the HVAC module assembly.
  4. Disconnect the mode actuator harness connector.
To Install:
  1. Align the mode actuator slots with the flats on the actuator door shaft.
  2. Install and secure the mode actuator on the HVAC module assembly with the mounting screws.
  3. Connect the mode actuator harness connector.
  4. Install the glove box assembly.
  5. Install the right lower I/P insulator.
  6. Calibrate the mode actuator.
Air Temperature Actuator Right Side To Remove:
  1. Remove the right lower instrument panel (I/P) insulator.
  2. Remove the glove box assembly. Air temperature actuator (right side) gm-10-00-4356.gif

  3. Remove the mounting screws and right air temperature actuator from the HVAC module assembly.
  4. Disconnect the right air temperature actuator harness connector.
To Install:
  1. Align the right air temperature actuator slots with the flats on the actuator door shaft.
  2. Install and secure the right air temperature actuator on the HVAC module assembly with the mounting screws.
  3. Connect the right air temperature actuator harness connector.
  4. Install the glove box assembly.
  5. Install the right lower I/P insulator.
  6. Calibrate the mode actuator.
Left Side To Remove:
  1. Remove the left lower instrument panel (I/P) insulator. Air temperature actuator (left side) gm-10-00-4357.gif

  2. Remove the mounting screws and left air temperature actuator from the HVAC module assembly.
  3. Disconnect the left air temperature actuator harness connector.
To Install:
  1. Align the left air temperature actuator slots with the flats on the actuator door shaft.
  2. Install and secure the left air temperature actuator on the HVAC module assembly with the mounting screws.
  3. Connect the left air temperature actuator harness connector.
  4. Install the left lower I/P insulator.
  5. Calibrate the mode actuator.

Oct 18, 2010 | 2006 Pontiac Grand Prix

1 Answer

How to replace a heater core in a 2002 chevy astro van


Heater Core Removal & Installation To Remove:
  1. Drain the engine coolant.
  2. Release and reposition the outlet heater hose clamp at the heater core.
  3. Remove the outlet heater hose from the heater core.
  4. Release and reposition the inlet heater hose clamp at the heater core.
  5. Remove the inlet heater hose from the heater core.
  6. Remove the screws that retain the cover to the heater case assembly.
  7. Remove the straps that retain the heater core to the heater case assembly.
  8. Remove the heater core from the vehicle.
To Install:
  1. Installation is the reverse of removal.
  2. Refill the cooling system.
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Aug 12, 2010 | 2002 Chevrolet Astro

1 Answer

I need instructions on how to remove a heater core from my 1967 Cutlass Supreme with A/C. After looking under the dash, the heater and A/C control cables are attached to what must be the enclosure box....


Hello! Disconnect the negative battery terminal...Drain the radiator and disconnect the heater inlet and outlet hoses at the dash...Remove the blower inlet to firewall screws...Remove the blower inlet, motor and wheel as an assembly...Disconnect the control wires from the defroster door...
Disconnect the vacuum hose diverter door actuator diaphragm...Disconnect the control cable from the temperature door lever...Remove the four nuts securing the heater assembly to the dash...Remove the screw securing the defroster outlet tab to the heater assembly...Remove the heater from the car...

To install...Make sure the heater assembly seal is in good condition...Position the assembly onto the dash and tighten the retaining screws...Reconnect the heater hoses, electrical connectors and negative battery cable; Refill the engine with coolant, start the vehicle and check for leaks...

Guru................saailer

Jul 01, 2010 | Oldsmobile Cutlass Supreme Cars & Trucks

2 Answers

Where can I get solid/detailed instructions for changing out the water pump on my 2001 Yukon SLE 4.8? Something that would include torque specs. and any must does and don'ts would be nice.


Escalade, Suburban, Tahoe, Yukon, Denali, DenaliXL, YukonXL 1999-2005 Water Pump - Removal & Installation 4.8L, 5.3L & 6.0L Engines
  1. Remove or disconnect the following:
    Air outlet duct Coolant Inlet radiator hose from the water pump Upper fan shroud Cooling fan and clutch assembly Drive belt Radiator outlet hose from the coolant pump Surge tank hose Heater hose Water pump

    62c3d00.jpg
    Fig. Exploded view of the water pump assembly-4.8L, 5.3L and 6.0L engines
To install:

NOTE DO NOT use cooling system seal tabs (or similar compounds) unless otherwise instructed. The use of cooling system seal tabs (or similar compounds) may restrict coolant flow through the passages of the cooling system or the engine components. Restricted coolant flow may cause engine overheating and/or damage to the cooling system or the engine components/assembly.
  1. Install or connect the following:
    Water pump. Install the water pump bolts. Tighten the water pump bolts first pass to 11 ft. lbs. (15 Nm); tighten the bolts final pass to 22 ft. lbs. (30 Nm). Water pump drive belt pulley and bolts (if applicable). Tighten the pulley bolts first pass to 89 inch lbs. (10 Nm); tighten the bolts final pass to 18 ft. lbs. (25 Nm). Surge tank hose Heater hose Outlet radiator hose to the coolant pump Drive belt Cooling fan and clutch assembly Upper fan shroud Inlet radiator hose to the water pump Air inlet duct Coolant

  1. Remove or disconnect the following:
    Air inlet and outlet duct Coolant Inlet radiator hose from the water pump Upper fan shroud Cooling fan and clutch assembly Drive belt Radiator outlet hose from the coolant pump Surge tank hose Heater hose Water pump

To install:
  1. Install or connect the following:
    Water pump. Install the water pump bolts. Tighten the bolts to 11 ft. lbs. (15 Nm) for the first pass; then tighten to 22 ft. lbs. (30 Nm) for the final pass. Water pump drive belt pulley and bolts (if applicable). Tighten the bolts to 89 inch lbs. (10 Nm) for the first pass; then tighten to 18 ft. lbs. (25 Nm) for the final pass. Surge tank hose Heater hose Outlet radiator hose to the coolant pump Drive belt Cooling fan and clutch assembly Upper fan shroud Inlet radiator hose to the water pump Air inlet and outlet duct Coolant

Hope this help to solve it (remember comment and rated this).

Apr 26, 2010 | 2001 GMC Yukon

1 Answer

HOW DO U GO ABOUT PUTTING IN A HEATER CORE. NEED


1. drain coolant
2.remove instrument panel
3. for 5.4 (4v) if equiped,remove junction splash shield
4.for 5.4 (4v) if equiped, disconnect starter relay cable9ad8eea.gif
  1. For 5.4L (4V), if quipped, remove junction block bracket.
  2. Clamp inlet and outlet heater hoses.
  3. Disconnect heater hose from heater core by gently pressing it toward heater core.
  4. Remove A/C plenum demister adapter.
  5. Disconnect vacuum line.
  6. Remove 13 plenum chamber top screws.
  7. Remove blend door assembly from case.
  8. Remove heater core.
To Install:
NOTE: If needed, clean and lubricate coolant hoses with plain water.

0f0dfb5.gif
  1. Install heater core.
  2. Install blend door assembly to case.
  3. Install 13 plenum chamber top screws.
  4. Connect vacuum line.
  5. Install A/C plenum demister adapter.
  6. Connect heater hose to heater core.
  7. Release all clamps from inlet and outlet heater hoses.
  8. For 5.4L (4V), if quipped, install junction block bracket.
  9. For 5.4L (4V), if quipped, connect starter relay cable.
  10. For 5.4L (4V), if quipped, install junction splash shield.
  11. Install instrument panel.
  12. Refill engine coolant.
I hope this helps you

Nov 12, 2009 | 2000 Ford Expedition

1 Answer

How to replace a water pump on a 2003 yukon


Water Pump Replacement (4.8L, 5.3L and 6.0L Engines)
Removal Procedure
1. Drain the cooling system.
2. Loosen the air cleaner outlet duct clamps at these locations:
 Throttle body
 Mass Airflow/Intake Air Temperature (MAF/IAT) sensor
3. Remove the radiator inlet hose clip from the outlet duct.
4. Remove the air cleaner outlet duct.
5. If necessary, remove the engine sight shield.
6. Remove the radiator vent inlet hose from the radiator hose clips.
7. Reposition the inlet hose clamp at the water pump.
8. Remove the inlet hose from the water pump.
9. Remove the fan blade.
11. Reposition the outlet hose clamp at the water pump.
12. Remove the outlet hose from the water pump.
13. Reposition the surge tank outlet hose clamp at the water pump.
14. Remove the surge tank outlet hose from the water pump.
15. Reposition the heater inlet hose clamp at the water pump.
16. Remove the heater inlet hose from the water pump.
17. Remove the water pump bolts.
18. Remove the water pump and gaskets.
19. Discard the water pump gaskets
Installation Procedure Important: All gaskets surfaces are to be free of oil or other foreign material
during assembly.
1. Install the water pump and NEW gaskets
2. Install the water pump bolts.
3. Install the heater inlet hose to the water pump.
Zoom Sized for Print
Notice: Refer to Fastener Notice in Service and Precautions.
2.1. Tighten the bolts a first pass to 15 Nm (11 ft. lbs.).
2.2. Tighten the bolts a final pass to 30 Nm (22 ft. lbs.).
4. Position the heater inlet hose clamp at the water pump.
5. Install the surge tank outlet hose to the water pump.
6. Position the surge tank outlet hose clamp at the water pump.
7. Install the outlet hose to the water pump.
8. Position the outlet hose clamp at the water pump.
9. Install the accessory drive belt.
10. Install the fan blade.
11. Install the inlet hose to the water pump.
12. Position the inlet hose clamp at the water pump.
13. Install the engine vent inlet hose to the radiator hose clips.
14. If necessary, install the engine sight shield.
Important: Align the arrow at the throttle body end of the duct with the throttle
body attaching stud.
15. Install the air cleaner outlet duct
16. Install the radiator inlet hose clip to the outlet duct.
17. Tighten the air cleaner outlet duct clamps at these locations:
 Throttle body
 MAF/IAT sensor Tighten the clamps to 7 Nm (62 inch lbs.).
18. Fill the cooling system.

I hope this helps. The numbering is incorrect in the sequence but the instructions are correct.

Roy

Nov 06, 2009 | 2003 GMC Yukon

1 Answer

99 Chevy 1500 heater core inlet hose male fitting broke


well you may need to replace the entire heater core if the remaining inlet/outlet nipple is not long enough. common problem many people have

May 27, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Pcv valve and hose assembly replacement????


the pcv vaulve is a6.00 part at the parts store and only takes a few sec too install
someones treying too rip you off

Feb 20, 2009 | 1999 Chevrolet Camaro

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