Mechanics

CHEVY HEATER CORE REMOVAL

2000 Chevrolet Silverado

Heater problem
2000 Chevy Silverado V8 Four Wheel Drive Automatic

My Silverado is the 5.3 newer body style how do I remove the heater core? Step by step with photos if available
thanks
Avatar
Ajkssnow
December 13, 2008.




Hello –

To better assist you I need to know the specific model…. Such as a K1500 or C2500 and then the engine in liter and the 8th digit of your VIN. Also how many miles are on it.

At that point I am hoping we have that data.

Is the core leaking? If I may ask why are you wanting to change it?

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.

ImpalaSS
Dec 13, 2008.
Our truck is a C1500 Silverado 4 x 4 with the 5.3L engine. The 8th diget of the vin is a " T" as in Tom. It has 131,000 miles on it and I don't know if it is original but assumed it is.

The reasons I believe it needs changed is.

I have no heat so I checked the following.

I have inspected the modulator motor and shaft that controls the baffel for movement and the do move. I turn full hot and it moves, fully cold and it moves and medium heat and it moves half way back.
I have also checked the temp guage of the truck while running and it runs in the area of 200+ deg-F. And stays there.
I checked the heater hoses to the heater core and one side is hot and the other hose is not. It is just a bit above room temperature.

I plan to get some hoses and try to back flush it to see if I can get anything out of it and if that helps but, I plan to keep this truck for a long time and do not want to be in a situation where I need heat and it goes out again. So I plan to replace the core and would like to know the proper sequance with any pics or diagrams that may help me.

Thanks for your support,
Allen

Tiny
Ajkssnow
Dec 13, 2008.
Allen

Thanks for all the info…………this will help others with a similar problem.

I agree, I would try to back flush first………..then if it worked then I would change during the summer………

Just for info……..are you running Prestone, green coolant? Only reason I ask is if you were running the Dex-Cool…….it has a tendency to gum up in the heater/radiator cores…..

Hope this helps………..let me know if you need something else…

Thanks again for all the detailed info………….

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.

REMOVAL PROCEDURE


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Drain the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
Disconnect the heater hoses.
Disconnect the temperature control cable from the heater/ventilation module.
Disconnect the mode control cable from the heater/ventilation module.
Remove the instrument panel (IP) carrier (2).
Disconnect the electrical harnesses and the ground connections as necessary.


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Remove the heater/ventilation module mounting nuts and the screws.
Remove the heater/ventilation module assembly. Set the module assembly on a bench.
Remove the heater core cover screws.


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Remove the heater core cover.


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Remove the heater core.

INSTALLATION PROCEDURE


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Install the heater core.


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Install the heater core cover. NOTE: Refer to Fastener Notice in Service Precautions.
Install heater core cover screws. Tighten Tighten the screws to 1.6 N.m (14 lb in) .
Install the heater/ventilation module assembly to the vehicle.
Install the heater/ventilation module mounting nuts and the screws. Tighten
Tighten the screws to 4 N.m (35 lb in) .
Tighten the nuts to 9 N.m (80 lb in) .


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Connect the electrical harnesses and the ground connections as necessary.
Install the instrument panel carrier (2).
Connect the mode control cable to the heater/ventilation module.
Connect the temperature control cable to the heater/ventilation module.
Connect the heater hoses.
Refill the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
AD

ImpalaSS
Dec 13, 2008.
Hello –

Forgot to tell you..

Looks like you may have some recalls on your vehicle. The dealer may fix these for free. Please contact the dealer service department, give them the VIN number of your car and have them check on these to see if they apply to you.

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.


http://www.2carpros.com/forum/automotive_pictures/248015_c15001_1.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_c15002_1.jpg


ImpalaSS
Dec 13, 2008.
My fluid is the orange type. Once done I will let you know the results.

I do have a couple of additional questions on the data you sent me.

1) Is there more information as to what the numbers mean on the schematic? I see the drawing is showing these but nothing to reference them to.

2) If I am understanding this correctly it appears that I need to take the entire heater/A/C module out. If so, this information is very vauge and if possible is there a manual I can get that gives much more details? Is there a manual with pictures of the objects being removed? If so where may I purchase it at? I guess I am looking for a specific book on my truck and not a range of years that show general information.

Thanks again,
Allen

Tiny
Ajkssnow
Dec 13, 2008.
Allen

We see tons of problems with the orange, Dex-cool…..plugs radiators also……….

The data……..the numbers must be from another pic that the manual uses……the only number the pic uses it #2…………

I have attached that for you……the module removal / installation…….

More detailed…….well……………..there is a link I attach below and here Find a car repair manual for your car repair questions. That you can purchase a manual………

You might see if that is what you want…………………

If not detailed enough what you may be wanting is the actual service manual………I have a 1995 Impala SS and purchased the entire service manuals for this………pricy…..but I have detail.

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.

HEATER/VENT MODULE REPLACEMENT

REMOVAL PROCEDURE


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Drain the engine coolant. Refer to Draining and Filling Cooling System in Cooling System.
If equipped remove the auxiliary battery.
Disconnect the heater hoses.
Remove the accumulator.
Remove the instrument panel carrier.
Remove the HVAC module drain hose.
Disconnect the electrical harnesses and the ground connections as needed.


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Remove the mounting nuts and the screws from the HVAC module.
Remove the HVAC module assembly from the vehicle.

INSTALLATION PROCEDURE


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If you are replacing the HVAC module, transfer the components from the old HVAC module as necessary.
Install the HVAC module assembly to the vehicle. NOTE: Refer to Fastener Notice in Service Precautions.
Install the mounting nuts and the screws to the HVAC module.
Tighten

Tighten the mounting screws to 4 N.m (35 lb in) .
Tighten the mounting nuts to 9 N.m (80 lb in)


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Connect the electrical harnesses and the ground connections.
Install the HVAC module drain hose.
Install the instrument panel carrier.
Install the accumulator.
Connect the heater hoses.
Install the auxiliary battery.
Fill the cooling system. Refer to Draining and Filling Cooling System.

ImpalaSS
Dec 14, 2008.

AD