Question about 2002 Chevrolet Tahoe

1 Answer

I just had my a/c evaporator core and heater core replaced two weeks ago. The heater worked fine at the time. I just thought it was a good idea to change since they were changing a/c core, but now my heat doesn't work. What could it be?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Chevrolet Master
  • 6,982 Answers

My sympathy goes to the shop. If they forgot to re-attach something it may be unreachable and they may need to take it apart again. They must guarantee the work and make good on it.
If they try and give you any BS about something else failing so they can charge you again, request to have the part returned to you have an independent party check it and if it is good or has been tampered with can go from there.
good luck

Posted on Sep 29, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

I have a 2000 s 10 blazer heater doesnt work..but all fues are good and tried replacing swith in effect..but blower works just fine? Any ideas

Sound like a heater core, the heater core would be under your dash..Another sign of the heater core being gone, is you would notice the floor board being wet..It is possible that maybe at some point the floor board was wet and you didn't know here it came from and didn't give it another thought..But if the blower works..I would bet heater core...Or it could be a thermostate..check the thermostate first it would be the easiest.. and the cheapest..

Nov 20, 2014 | Cars & Trucks

1 Answer

How do I replace a heater core

The entire instrument panel must be removed to access the air box under the dash. Once removed, it's a good idea to replaced the A/C evaporator at the same time. Jeeps are known for leaking evaporators and there's no reason to go through that job twice for the cost of a part. The A/C has to be recovered and recharged anyway, so you might as well fix it now.

Jun 18, 2014 | 1995 Jeep Grand Cherokee

1 Answer

How to repair the heater core

Depends on what the heater core is made of.
All repair shoppes would replace the core, and not try to fix it.
Back 30 years ago, they were repairable, as they were made of brass and copper, and could be soldered.
Today, they are usually plastic and/or aluminum, and are supposed to be replaced when they go bad.
You could try some good "stop leak" in your radiator, and leave the heater on for a few weeks to get the water to circulate from the radiator to the engine to the heater, but alas, I've never had that work yet, and I have tried about 20 times (on 20 cars).
Stop leak would sure be cheaper that having the core replaced.
Be blessed.

Mar 18, 2013 | 1994 Oldsmobile Achieva Special Edition

1 Answer

Barely any heat coming out of my heater

Check to make sure the coolant level is full. Make sure the thermostat is working, you temp gauge will read low if it is not. Most likely the heater core is plugged, very common on the durangos. You can have a service done to the heater core called back flushing. It may not be a bad idea to flush the cooling system at the same time especially if it has never been done. If you get more heat after the flush drive for a week or so and then have it flushed again. If the heat is now adequate you just saved yourself 5 or 6 hundred dollars. If the heat is still not good than you will need to replace the heater core.

Oct 26, 2012 | 2000 Dodge Durango

2 Answers

My 2008 Mazda tribute has a drenched passenger side rug and insulation. I discovered it last week (December). I found the cabin filter cover was not tightly installed, I caulked around the inside of the...

Hey Marcel,
Does the liquid smell funny? Sounds like the heater core is leaking... get the engine warm, then turn the heater wide open - hot as possible- and see if the liquid reappears ,, if it does,, you need to get the heater core repaired or replaced.

Jun 24, 2017 | Mazda H240 Cars & Trucks

1 Answer

I have a 2003 Dodge ram 2500 with the 5.7l Hemi, I notice a few weeks ago that there was a small amount of water(Not anti-freeze) that leaked onto the floor on the passenger side. It happened again last...

I don't know how the heater would be affected but water there and if it's not antifreeze from the heater core would just about have to be the condensation from the a/c evaporator because of a stopped up drain hose or cracked drain pan.

Aug 10, 2010 | Dodge Ram 2500 Cars & Trucks

1 Answer

Smoke coming out of vents

if it smells like sweet antifreeze, it is
the heater core is not he A/C evaporator core.

the core fails due to not replacing the antifreeze coolant before it goes acidic ... (not doing service here)

are you getting leakage under the dash near heater box, blower area?

Mar 08, 2017 | 1998 Jeep Cherokee

3 Answers

Cost and how to repair a heater core on a 1994 Volvo 850 Wagon.

The heater core on your Volvo is an easy fix. The dash does not need to come out. You remove 6 screws from the center console, pull that out of the way, pull back the carpet and there she is. A couple more screws, a tug to the back to remove the bad core and you replace in reverse. Put down a plastic bag or catch-can to get whatever coolant comes out when the core is removed. I thought I was in for an expensive repair until I researched and saw how easy the job was.

Mar 25, 2009 | 1994 Volvo 850

1 Answer

Heater core or blower motor?

Sounds like your blower motor , you heater core is a non mechanical part and if it were the issue you are correct in thinking you would see fluid on the floor or mist on the windshield.

Dec 17, 2008 | 2005 GMC Envoy

2 Answers

1993 taurus heater core replacement guide

This is a big job which involves discharging and removing parts of the A/C system as well as removing parts of the dash. I had the core done on a 94 Sable years ago and it was a very labor intensive and expensive job. Here are some instructions I found for a 94 Taurus which should be the same thing or similiar, but I don't guarantee that. Please note that these instructions were not tested by me and may contain errors or be incomplete in some way. For example "remove instrument panel" sounds simple but in reality is a process in itself requiring the removal of many screws. Naturally you would have to recharge the A/C and refill the coolant when done.

1. Remove instrument panel and lay it on front seat.
2. Remove A/C evaporator housing as outlined.
3. Remove vacuum source line from heater dash panel seal (18529).
4. Remove heater dash panel seal from heater core tubes (refer to Heater Case Assembly).
5. Remove four heater core access cover retaining screws and remove heater core cover (18B300) from A/C evaporator housing.
6. Lift heater core and seals from A/C evaporator housing.

1. Transfer three foam core seals to new heater core.
2. Install heater core and seals into A/C evaporator housing.
3. Position heater core cover on A/C evaporator housing. Install four retaining screws.
4. Install heater dash panel seal on heater core tubes.
5. Install vacuum source line through heater dash panel seal.
6. Install A/C evaporator housing into vehicle as outlined.
7. Reinstall dashboard components.

Best of Luck!


Aug 19, 2008 | Ford Taurus Cars & Trucks

Not finding what you are looking for?
2002 Chevrolet Tahoe Logo

Related Topics:

148 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

76630 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8516 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides