Question about 1999 Chevrolet Silverado 1500

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Yes the instrument panel and carrier have to come out.Actually you can have it back far enough on the seat.You need it out this far in order for the heater plenum to come out.This is the part that the heater and evaporator core are in.The a/c will have to be evacuated.It is about a 7 or 8 hour job.This is for a trained technician.Times this by the hourly rate at the shop you take it to.Hope this helps.Good luck.

Posted on Sep 27, 2010

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The right floor board of my car is wet. and it has a stinky odor!

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How do I replace the heater core in my 1998 Silverado k1500?

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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

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