answersLogoWhite

0


Best Answer

I recently replaced the heater core in my 1985 Chev C-30 Silverado 1 Ton Pickup with air conditioning. First I had remove any of the parts that are connected to the basic plenum inside the cab(where the core is installed). I then had to remove the passenger side fender well (Not as difficult as it sounds). Then I had to remove the outside cover for the heater and air conditioning cores in the engine compartment (The bottom screw in this cover is not accessible until you remove the fender well). Then it is necessary to remove the three nuts for the through studs that come from inside the cab and go through the firewall. There is one at the top and two at the bottom (again you can't get at one of the bottom nuts unless the fender well is removed). I then had to remove the A/C core (just a few bolts all accessible with the wheel well removed) in order to remove a speed nut from the upper stud. The heater plenum (with the heater core inside) can now be pulled away from the firewall far enough to reach behind and disconnect any remaining vacuum lines and electrical fittings. The plenum can now be removed from the vehicle. There is still considerable work to replace the core. The firewall side of the plenum is all one piece and all the screws have to be removed including two hidden screws on the left side of the opening in the plenum underneath the foam gasket. It is also necessary to remove any thing that attaches the two halves of the plenum together. Shaft for the ? gate is just pushed out and the screw in the linkage that connects the ? gate with the vacuum controller has to be removed while holding the gate open and using a 1/4 drive extension with the proper size socket. Sorry I don't know what these gates are called but there is only one of each so you can readily identify them. You now can remove the inner half and the heater core is exposed with its two tie down brackets.

User Avatar

Wiki User

โˆ™ 2015-07-15 20:47:24
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: How do you replace a heater core in a 1986 Chevy Silverado pickup?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Do you have to remove the dash to replace the heater core in a 1994 Chevy S10 pickup?

Yes.


How do you replace a heater core in a 1977 Chevy pickup?

pay someone to do it for u, what a pain in the ARSE


Where is the heater blower located on a 2002 Chevy silverado?

The heater blower for a 2002 Chevy Silverado is mounted under the dash. It is on the passenger side, in the heater housing.


Replace fuel filter 2008 Chevy Silverado?

replace fuel filter 2008 Chevy silverado


Cost of insurance for Chevy Silverado pickup?

The cost of insurance for a Chevy Silverado pickup is not a set price. The cost is determined by the driver, the company, and the coverage needed.


How do you adjust a door on a 2000 Chevy Silverado pickup to eliminate wind noise at the top of the door?

Replace door moulding


Where is my hood latch located on a 1999 Chevy Silverado?

where is my hood latch located on my 1999 Chevy silverado pickup


How long does it take to replace a heater motor in a 2000 s-10 Chevy pickup?

15 to 30 minutes.


How do i replace the heater core on a 2002 S Chevy four door pickup truck or how do i test to see if the heater core is bad?

Give us the symptoms you are experiencing with your 2002 S-10? or Silverado? Such as, leaking coolant on passenger floor. lack of heat. sweet smell when heater is blowing.


How do you replace a CV joint on a 1992 Chevy pickup?

how do you replace a CV joint on a 1992 Chevy pickup?


How do you remove and replace a heater core on a 1999 Chevy silverado?

buy a Chilton manual and it will tell you most of what you need to know.


Where is the ignition coil on a 1986 Chevy silverado pickup truck?

no

People also asked