Question about 1999 Chevrolet Silverado 1500

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How to change a heater core in a 1999 Chevorlet silverado, do i have to remove the dash

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Yep remove the dash

Posted on Nov 19, 2009

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I changed my heater core in my 99 chevy silverado what a job it still doesnt blow hot air what did i do wrong


MAKE SURE ALL BLEND DOORS UNDER DASH WORK PROPERLY. GOOD LUCK MOTOR62500. PS ARE BOTH HEATER HOSES HOT?

Dec 19, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

How do i change the heater core on my 1999 chevy silverado 1500?


Inspect/Replace If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 11, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

I have a 1995 chevy silverado 1500. the heater hose bursed. do I have to remove the dash board to repair it?


The heater hose connects to the heater core through the fire wall, under the hood, remove heater hose clamp at fire wall under the hood, remove clamp at other end, install new heater hose, no you don't have to do any thing under the dash.

Sep 09, 2010 | 1999 Chevrolet Silverado 1500

3 Answers

I have a 1999 chevy silverado and I need to change heater core


Not a whole lot different. Just need to keep removing plastic down at the heater until you get to the heater core. Then disconnect it on the firewall side.

Dec 22, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

I need step by step instructions on how to change a heater core on 2000 chevy silverado 1500! I have torn most of my dash down already can see heater core but still can't get to it to change.


It's been a while since I've done one of those. If my memory serves correct you have to remove the lower right bolt that holds the dash in place. Then you can pull the dash out enough to get the core out. If you can see it you have to be almost there. Do you have the glove compartment out? It seems to me there are some electrical components that sit on top of heater that have to be removed too. Hoses disconnected under the hood? I'm sorry I can't be of more help.

Dec 16, 2009 | 2000 Chevrolet Silverado

1 Answer

How do you replace the heater core


Heater core is located underneath the dash inside the air box on the right side of the truck.. you will need to have the a/c system discharged by a qualified repair facility before beginning. you will need to drop the steering column and remove the entire dash assembly. You can cheat in places but GM puts a few bolts in precarious places. Heater core hoses will need to be disconnected and cooling system drained.

Dec 06, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Heater core on silverado


You should have enough room to work by just removing the glove compartment door...

Dec 11, 2008 | 1994 Chevrolet K1500

1 Answer

1999 buick heater core


the heater core is located in the heater case under the dash you need to remove the dash to remove the heater / a/c case to access the heater core

Nov 20, 2008 | 1999 Buick Regal

1 Answer

Heat Core Replacement


there is no diagrams your heater core is under your dash panel you must take the whole dash panel to replace the heater core.



Nov 02, 2008 | 1999 Chevrolet C1500

1 Answer

Heater core removal on a 1999 olds bravada


mid section behind under dash ! do you have the dash out yet?

Oct 27, 2008 | 1999 Oldsmobile Bravada

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