Best Answer

The heater core should be located on the passenger side just below the dash. There should be a plastic cover over the core that will have to be removed first.

But, before you remove the heater core, make sure to drain the cooling system of antifreeze and add NEW antifreeze after completing the repairs.

First, drain the cooling system. Then, trace the 2 black rubber lines from the water pump to the firewall at the heater core and disconnect them. now move to inside of the truck and locate the heater core cover and remove it (carefully though, these things will crack easily). You should then be able to access the heater core and remove it ( there will be a couple of metal straps that hold it in place...just remove one of the small mounting bolts for each strap).

If you don't feel comfortable with these directions, your local parts store should sell either a Haynes or Chilton's repair manual for 1982-1993 s10's. You can pick one up for less than $20. It will have detailed instructions on how to do this and many more repairs.

User Avatar

Wiki User

โˆ™ 2015-07-15 21:15:51
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: How do you replace the heater core on a 1991 Chevrolet Silverado Pickup?
Write your answer...
Still have questions?
magnify glass
Related questions

How do you replace heater resistor in 01 Chevrolet Silverado?

You will need to remove the dash and it should be somewhere under

How do you replace a heater core on a 1991 Chevrolet S-10 Tahoe pickup?

Get a manual on your car to do the job right.

How do you replace a heater core in a 2001 Chevrolet Blazer?

how do i replace a heater core in a 2001 Chevrolet blazer

How do you replace a 2004 silverado heater control bulb?

i need to replace the temperature control light bulb on my 2004 silverado.

Where is the heater resistor coil on a 1996 Chevrolet Silverado?

Drop the glovebox door and you will have access to it.

Replace a heater core 1994 S-10 pickup?

heater core removal

How do you replace the heater core on a s-10?

i need to know how to replace the heater core on my 1992 s-10 pickup

What is causing a 1989 Chevrolet silverado sloshing sound in dash?

Heater core has air in it and or plugging up.

Where is block heater cord on 2007 Chevrolet Silverado?

It may not be equipped with one. If it is you would easily see the cord.

How do you replace heater fan on 1986 Chevrolet van?

What is the problem? Do you want to replace fan or fan clutch?

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.

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


People also asked