Question about 1999 Chevrolet Silverado 1500

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Need to find out how to replace a heater core on a 1999 chevy c 1500 pic-up.

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You might not want to try this if you are not mechanically inclined.Plus you also nee to partially remove the instrument panel and the steering wheel and you will also need to evacuate the freon from the a/c system.After the instrument carrier is out of the way you have to remove the hvac plenum and disassemble it to remove the heater core.About a seven hour job for an experienced technician.Are you sure you want to tackle this?

Posted on Nov 07, 2010

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1 Answer

Where is the heater core located on 1999 chevy silverado 1500


I have a Late 1999 Chevy Silverado C1500 Z71. I had one of the heater hose nozzle snap off this past weekend. I looks like the heater core hase some kind connection fitting. And I had the same situation!

Feb 10, 2012 | 1999 Chevrolet Silverado 1500

1 Answer

I have 1999 chevy truck 2wd 1500 need to replace the heater core need help


If i remember correctly you will have to remove the dashboard to get to the a/c box on these trucks. Then you need to disconnect the heater hoses and remove the a/c box. Then take the A/C box apart and replace the heater core.

Jan 20, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

I just got a 1999 chevy silverado 2wd and the temp reaches 210 but the air dosnt blow hot


1.)heater core restricted-check both heater hoses coming from the heater core if one is cold your heater core is restricted and you will need to flush the core.
2.)Your air mix door actuator in the vehicle is inoperative and you will need to replace it.It is located on the bottom of the heater case in the center of the vehicle.It mounts straight up with a couple bolts.

Dec 23, 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

My chevy was running yesterday but, I don,t know


You can temporary run one heater hose into the other- either just take one side off the car and route the one hose right back into the water pump or - you can get a kit -
Either way - now you will need to replace the heater core inside the car.

Apr 17, 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

2 Answers

How to replace a heater core in a 1994 chevy 1500


As with all vehicles it seems the first part that they build around is the heater core. It is under the dash above the floor housed in a black plastic sealed box. Sealed with goop. Locate that box and start removing everything around it that is peventing taking the cover off. Of course disconnect the heater hoses under the hood a thefirewall.

Warning it is never as easy as it sounds.

Nov 29, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

How do I get to the heater core (through the dash_, but is it on passenger side? I am having trouble getting the bolts off. Truck is Silverado 1999 Z71 (1500).


I just replaced the heater core on my 1997 S-10. If your chevy is anything like mine, the entire dash has to come out. I recommend buying a Hayne's manual for it. Those books are life savers.

Oct 06, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Heater core in a 1999 chevy 1500


the heater core if i remember correctly comes out through the underside of the hood

Sep 07, 2009 | 1985 Chevrolet Chevy

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

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