Heater core removal

Tiny
SANAUG2009
  • MEMBER
  • 2000 CHEVROLET SILVERADO
Heater problem
2000 Chevy Silverado V8 Two Wheel Drive Automatic

HOW DO I CHANGE THE HEATER CORE AND WHAT SHOULD I PAY FOR A NEW ONE?
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:49 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
A new heater core for your vehicle will run around $180 , depending on location and brand chosen . removal steps are below..


http://www.2carpros.com/forum/automotive_pictures/261618_Noname_1412.jpg

Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:49 PM (Merged)
Tiny
JUSTTRING
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 195,585 MILES
Heater problem
1999 Chevy Silverado V8 Four Wheel Drive Automatic 195585 miles

how do I get the heater core out Do I have to take dash apart? Where can I look at a diagram
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT


http://www.2carpros.com/forum/automotive_pictures/261618_Noname_856.jpg



http://www.2carpros.com/forum/automotive_pictures/261618_Noname2_225.jpg



http://www.2carpros.com/forum/automotive_pictures/261618_Noname3_81.jpg



http://www.2carpros.com/forum/automotive_pictures/261618_Noname4_45.jpg



http://www.2carpros.com/forum/automotive_pictures/261618_Graphic_122.jpg

Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT


http://www.2carpros.com/forum/automotive_pictures/261618_Noname_856.jpg



http://www.2carpros.com/forum/automotive_pictures/261618_Noname2_225.jpg



http://www.2carpros.com/forum/automotive_pictures/261618_Noname3_81.jpg



http://www.2carpros.com/forum/automotive_pictures/261618_Noname4_45.jpg



http://www.2carpros.com/forum/automotive_pictures/261618_Graphic_122.jpg

Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
AL.YOUNG
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • V8
What is envoled in replaceing the heater core in a 99
chevy silverado.
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
DAVE H
  • MEMBER
Heater Core Replacement
Removal Procedure
Disconnect the negative battery cable.
Drain the engine coolant.
Disconnect the heater hoses. Refer to Heater Hoses Replacement (4.8L, 5.3L, 6.0L) or Heater Hoses Replacement (4.3L).
Disconnect the temperature control cable from the heater/ventilation module. Refer to Temperature Control Cable Replacement.
Disconnect the mode control cable from the heater/ventilation module. Refer to Mode Control Cable Replacement.
Remove the instrument panel (IP) carrier. Refer to Removal under INSTRUMENT PANEL in Gauges and Instrument Panels.
Fig. 59: Identifying Electrical Connectors
Courtesy of GENERAL MOTORS CORP.
Disconnect the electrical harnesses and the ground connections as necessary.
Fig. 60: Heater/Vent Module Assembly
Courtesy of GENERAL MOTORS CORP.
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.
Fig. 61: Heater Core Cover (Heat Only)
Courtesy of GENERAL MOTORS CORP.
Remove the heater core cover.
Fig. 62: Removing Heater Core (Heat Only)
Courtesy of GENERAL MOTORS CORP.
Remove the heater core.
Installation Procedure
Fig. 63: Removing Heater Core (Heat Only)
Courtesy of GENERAL MOTORS CORP.
Install the heater core.
Fig. 64: Heater Core Cover (Heat Only)
Courtesy of GENERAL MOTORS CORP.
Install the heater core cover.
NOTE:Refer to Fastener Notice in Cautions and Notices.

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).
Fig. 65: Identifying Electrical Connectors
Courtesy of GENERAL MOTORS CORP.
Connect the electrical harnesses and the ground connections as necessary.
Install the instrument panel carrier. Refer to Refer to Install under INSTRUMENT PANEL in Gauges and Instrument Panels.
Connect the mode control cable to the heater/ventilation module. Refer to Mode Control Cable Replacement.
Connect the temperature control cable to the heater/ventilation module. Refer to Temperature Control Cable Replacement.
Connect the heater hoses. Refer to Heater Hoses Replacement (4.8L, 5.3L, 6.0L) or Heater Hoses Replacement (4.3L).
Refill the engine coolant.
Connect the negative battery cable.
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
DOMINOS70
  • MEMBER
  • 2001 CHEVROLET SILVERADO
  • 130 MILES
Considering heater core remove/replace due to leak, no heat, etc.
The Haynes manual provides decent step by step but wondering if it's accurate, especially discharging the AC.
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
No its not necessary to discharge the AC
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
DOMINOS70
  • MEMBER
Thanks rasmataz. I've reached the pinnacle, dash/panel removed, & heater/ac is exposed. Does removing the mount bolts from the firewall provide enough wiggle room to remove the heater core since the ac doesn't need discharged, and apparently ac tank doesn't need removed?
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
DOMINOS70
  • MEMBER
FYI: One of the heater core assy mount bolts is conveniently located between the ac recovery tank and firewall so it was necessary to discharge the AC and remove the AC recovery canister so the heater core can removed/installed. Thanks
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Thanks for the information and Merry Christmas
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
MARILYN GRAY
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • 5.8L
  • 6 CYL
  • TURBO
  • 4WD
  • AUTOMATIC
  • 248,000 MILES
All of a sudden I began to smell anti freeze from the dash vents and vapor on the windshield that the defroster will not blow off.
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
HMAC300
  • EXPERT
You need a heater core and the dash has to come out to fix it.
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
ECORNEJO
  • MEMBER
  • 2001 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 134,000 MILES
Heater problem
2001 Chevy Silverado 6 cyl Two Wheel Drive Automatic 134000 miles

I replaced the heater core because no warm airs was blowing and still after I replaced it still nothing, just cold air. What could it be now?
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
Remove and test thermostat, it may be stuck open
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:50 PM (Merged)
Tiny
PAUL GALLEGOS
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 76,000 MILES
Heater problem
1999 Chevy Silverado V8 Four Wheel Drive Automatic 76000 miles

how do I remove plastic hose connector from heater core.
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:51 PM (Merged)
Tiny
MERLIN2021
  • EXPERT


http://www.2carpros.com/forum/automotive_pictures/62217_Heater_core_tubes_1.jpg


#5 shows the core tube ends, they are made of either aluminum, or copper, the hoses attach which pinch type clamps from the factory, Can you post a picture? Pinch clamps, just use pliers...
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:51 PM (Merged)
Tiny
THAZ6969
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 123,000 MILES
How do I replace a heater core in a 1999 Chevrolet Silverado?
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:51 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Here is what I could find.

Disconnect the negative battery cable.
Drain the engine cooling system into a clean container for reuse.
Disconnect the heater hoses from the heater core.
Remove the instrument panel storage compartment.
Disconnect the electrical connectors, as necessary, that may be in the way.
Remove the center floor air distribution duct.
Remove the hinge pillar trim kick panels.
Remove the blower motor cover screws and the cover.
Remove the blower motor screws and the blower motor.
Remove the steering wheel and the steering column (standard & tilt).
Remove the instrument panel fasteners and pull the instrument panel back far enough to gain access to the heater assembly.
While holding the heater assembly against the firewall, remove the screw located on the interior side near the evaporator pipe, if equipped.
In the engine compartment, remove the 4 heater assembly-to-chassis screws and the 2 heater assembly-to-chassis nuts.
NOTE
Removal of the heater assembly may require the help of an assistant.

Remove the 7 heater cover-to-heater assembly screws and the cover.
Remove the heater core from the heater assembly.

To install:

Install the heater core to the heater assembly.
Install the heater cover and the 7 heater cover-to-heater assembly screws.
NOTE
Installation of the heater assembly may require the help of an assistant.

In the engine compartment, install the 4 heater assembly-to-chassis screws and the 2 heater assembly-to-chassis nuts. Torque the screws to 17 inch lbs. (1.9 Nm) and the nuts to 25 inch lbs. (2.8 Nm).
While holding the heater assembly against the firewall, install the screw located on the interior side near the evaporator pipe, if equipped. Torque the screw to 97 inch lbs. (11 Nm).
Install the instrument panel and the instrument panel fasteners.
Install the steering column (standard & tilt) and the steering wheel.
Install the blower motor and the blower motor screws.
Install the blower motor the cover and the cover screws.
Install the hinge pillar trim kick panels.
Install the center floor air distribution duct.
Connect the electrical connectors that were disconnected.
Install the instrument panel storage compartment.
Disconnect the heater hoses to the heater core.
Refill the engine cooling system.
Connect the negative battery cable.
Run the engine to normal operating temperatures; then, check the climate control operation and check for leaks.
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:51 PM (Merged)

Please login or register to post a reply.

Recommended Guides