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How do I replace a heater core?

How do I replace a heater core?

Postby rcannon440 [OP] » Oct 27 2010, 2:19am

Does any one know of a web site that shows how to replace a heater core in a 2000 Silverado 5.3L or any pics.
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rcannon440
Firing on 2 cylinders [L1]
Firing on 2 cylinders [L1]
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Year: 2000
Make/Model: Chevrolet Silverado
Variant: VHO/Vortec Max
Extra Info: 5.3l
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Related Topics  heater core   HEATER CORE?????   Heater core flush?   Heater Core Leak?   Heater core bypass valve   Suspected heater core leak   Smell anti freeze in truck (Heater Core)   Heater-core hose quick connect fitting failure   Evaporator core replacement   Core Cargo Net Feedback?   How often do you replace shocks?   T-Case Down! Anything Else I Should Replace?   Replace plugs?   I need to replace my radio. 
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Re: How to replace a heater core

Postby jepics » Oct 27 2010, 6:53pm

I found one for you here - apparently it is a difficult and lengthy procedure!

http://chevroletforum.com/forum/archive/index.php/t-19088.html

The original article provides a lot of references (unavailable to us & eliminated here) from GM Service & Parts site, but the procedure is provided in a post from shawnvw on 11-21-2008, 04:13 PM, he writes:

I hope you have a strong technical background and a good memory of where bolts and panels came from. The entire dash needs to come out of the vehicle. I'll post instructions below....

Instrument Panel Carrier Replacement

Caution:Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.
Caution:This vehicle is equipped with a Supplemental Inflatable Restraint (SIR) System. Failure to follow the correct procedure could cause the following conditions:

• Air bag deployment
• Personal injury
• Unnecessary SIR system repairsIn order to avoid the above conditions, observe the following guidelines:

• Refer to SIR Component Views in order to determine if you are performing service on or near the SIR components or the SIR wiring.

• If you are performing service on or near the SIR components or the SIR wiring, disable the SIR system. Refer to Disabling the SIR System.

Disconnect the negative battery cable.

Remove the I/P trim pad. Refer to Instrument Panel Upper Trim Pad Replacement .

Remove the center console, if equipped. Refer to Console Replacement .

Remove the I/P extension, if equipped. Refer to Instrument Panel Extension Replacement .

Remove the driver side knee bolster. Refer to Knee Bolster Replacement .

Remove the lower I/P trim panel. Refer to Instrument Panel Lower Trim Panel Replacement

Remove the passenger side air bag module. Refer to Inflatable Restraint Instrument Panel Module Replacement in SIR.

Remove the radio. Refer to Radio Replacement in Entertainment.

Remove the HVAC control. Refer to HVAC Control Module Replacement in HVAC Systems-Manual or Automatic.

Remove the accessory switch housing. Refer to Accessory Switch Replacement

Remove the left air louver housing. Refer to Instrument Panel Outer Air Outlet Deflector Replacement - Left Side in Heating, Ventilation and Air Conditioning.

Remove the steering column. Refer to Steering Column Replacement in Steering Wheel and Column.

Remove the VIU, if equipped. Refer to OnStar Vehicle Interface Unit Replacement in Cellular Communication.

Remove the VCU, if equipped. Refer to OnStar Vehicle Communication Unit Replacement in Cellular Communication.

Remove the remote control door lock receiver module, if equipped. Refer to Remote Control Door Lock Receiver Replacement in Keyless Entry.

Remove the data link connector from the I/P. Refer to Data Link Connector Replacement in Data Link Communications.

Remove the park brake release lever from the I/P. Refer to Parking Brake Release Handle Assembly Replacement in Park Brake.

Remove the I/P cluster. Refer to Instrument Cluster Replacement .

Remove both front window air duct from the I/P assembly.

Remove the harness from the I/P. Refer to Instrument Panel Electrical Center or Junction Block Replacement in Wiring Systems.

Remove the I/P assembly retaining bolts (3) and nuts (4).

Remove all harness hold down retainers from the I/P assembly.
Remove the I/P assembly from the vehicle.

Remove the I/P upper brackets.
Disconnect all the electrical connectors from the wiring harness junction block. Refer to Instrument Panel Electrical Center or Junction Block Replacement in Wiring Systems.

Remove the transfer case control module from the bracket, if equipped. Refer to Transfer Case Shift Control Module Replacement in Transfer Case NV6 246 - NP8.

Remove the antenna cable from the cross car duct.

Remove the cross car duct. Refer to Air Distributor Duct Replacement in Heating, Ventilation and Air Conditioning.
Remove the amplifier, if equipped. Refer to Radio Speaker Amplifier Replacement in Entertainment.
Separate the I/P harness from the carrier.

Do not remove the I/P harness from the vehicle.

If replacing the HVAC module, remove the right side of the carrier from the vehicle to gain access to the module.

Remove the I/P center support bracket bezel(1).

Important:Remove all of the parts of the I/P carrier assembly from the vehicle as 1 unit.
Remove the I/P center support bracket bolt.


Remove the I/P carrier side bolts.
The left side is shown, the right side is similar

Remove the I/P carrier top bolts(1).

Remove the I/P carrier(1) from the vehicle.

Heater/Vent Module Replacement

Removal Procedure

Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.

If equipped remove the auxiliary battery. Refer to Auxiliary Battery Replacement in Engine Electrical.
Disconnect the heater hoses. Refer to the following procedures:


•Heater Inlet Hose Replacement

•Heater Outlet Hose Replacement
Remove the accumulator. Refer to Air Conditioning Accumulator Replacement

Remove the instrument panel carrier. Refer to Instrument Panel Carrier Replacement
in Instrument Panel, Gages and Console.

Remove the HVAC module drain hose.

Disconnect the electrical harnesses and the ground connections as needed.

Remove the HVAC module mounting nuts and the screws.

Remove the HVAC module assembly from the vehicle.

Heater Core Replacement

Removal Procedure
Remove the heater/vent module. Refer to Heater/Vent Module Replacement

Remove the heater core cover screws.

Remove the heater core cover.
Remove the heater core.
If you want to do what you want to do, you have to do what you have to do.
--John
5320
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jepics
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Re: How do I replace a heater core?

Postby rcannon440 [OP] » Oct 27 2010, 7:59pm

WOW!!!!!!!!!! Big job, can't imagine how much it would cost at a repair shop. Thanks for the information, I will let you know how it goes.
Rob
Original Poster
rcannon440
Firing on 2 cylinders [L1]
Firing on 2 cylinders [L1]
Posts: 25
Topics: 4
Blogs: 0
Joined: Sep 07 2010, 8:53pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: North Carolina
Year: 2000
Make/Model: Chevrolet Silverado
Variant: VHO/Vortec Max
Extra Info: 5.3l
Group Membership:
Registered users

Re: How do I replace a heater core?

Postby olliepop2500 » Oct 27 2010, 8:48pm

yea i did it in my truck i still have screws left hahaha. but then i found out that it wasnt the heater core. so i did it all for nothing. it was some stupid plastic peice in the engine bay the broke off the heater core so. it took like 3 days to take it a part but that wasnt workin on it all day.
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Re: How do I replace a heater core?

Postby rcannon440 [OP] » Oct 28 2010, 1:26am

What symptom did you have that you thought it was the heater core? I don't want to make the same mistake. I have the strong antifreeze odor in the cab.
Original Poster
rcannon440
Firing on 2 cylinders [L1]
Firing on 2 cylinders [L1]
Posts: 25
Topics: 4
Blogs: 0
Joined: Sep 07 2010, 8:53pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: North Carolina
Year: 2000
Make/Model: Chevrolet Silverado
Variant: VHO/Vortec Max
Extra Info: 5.3l
Group Membership:
Registered users

Re: How do I replace a heater core?

Postby olliepop2500 » Oct 28 2010, 1:40am

mine was the hose goin into the heater core broke off at the firewall
Image
06 silverado ccsb lbz dmax aka beyonce efi live, s&b intake, 5" exhaust 6" tip dumped, 20" chrome rockstars
User avatar
olliepop2500
Shifting into Fourth Gear [L3]
Shifting into Fourth Gear [L3]
Posts: 1483
Topics: 52
Images: 90
Blogs: 3
Joined: Apr 29 2010, 2:04am
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: drums, PA
Year: 2006
Make/Model: Chevrolet Silverado
Extra Info: 2500hd lbz dmax
Group Membership:
Supporters
Registered users

Re: How do I replace a heater core?

Postby jepics » Oct 28 2010, 2:31am

There are cooling system sealants that can be introduced into the cooling system that should seal a small leak. While I don't generally recommend that approach, based on the extensive work involved, that might be a viable alternative.
If you want to do what you want to do, you have to do what you have to do.
--John
5320
User avatar
jepics
Combustion on 8 pistons [L2]
Combustion on 8 pistons [L2]
Posts: 831
Topics: 51
Images: 24
Blogs: 8
Joined: Sep 02 2010, 9:16pm
Years of membership: 3 years of membership3 years of membership3 years of membership
Location: Rockland County NY
Year: 2009
Make/Model: GMC Sierra
Extra Info: SLE 5.3 V8 4x4 Z71
Group Membership:
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