C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Advise please!..heater core replacement (L98)

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Old Sep 30, 2002 | 11:27 PM
  #1  
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Default Advise please!..heater core replacement (L98)

I am getting ready to replace the broken heater core which is bypassed right now. This is on a '91 automatic (don't know if that makes a difference or not). How difficult of a job is it? What is the correct proceedure for replacement?? Are there any special tips you guys have, or any odd ball tools/supplies I am going to need? Any advise you have would be great!
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Old Sep 30, 2002 | 11:46 PM
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Default Re: Advise please!..heater core replacement (Vette9d1)

Do a search on this topic. There are several people had the same problem including me.:( http://forums.corvetteforum.com/zerothread?id=195235 http://temp.corvetteforum.net/c4/scoob//c4heater01.jpg http://temp.corvetteforum.net/c4/scoob//c4heater02.jpg
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Old Sep 30, 2002 | 11:50 PM
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Default Re: Advise please!..heater core replacement (Vette9d1)

Steel nuckles and profanity and beer and about 4-6 hours. Seriously just take your time and remove everything you can to get to it, I have done mine twice, Practice yoga prior. Good luck,If you do a search you should find some very helpfull tips. :cheers:


[Modified by kabnvtt, 3:50 AM 10/1/2002]
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Old Sep 30, 2002 | 11:56 PM
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Default Re: Advise please!..heater core replacement (kabnvtt)

Steel nuckles and profanity and beer and about 4-6 hours. [Modified by kabnvtt, 3:50 AM 10/1/2002]
Wow, 4-6 hrs. I thought that it would take me at least more than 10 hours total time.
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Old Oct 1, 2002 | 10:44 AM
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From: Port Moody BC
Default Re: Advise please!..heater core replacement (Vette9d1)

Do yourself a favour and take it in!!!! Alldata says the labour time is 4.2 hours. Took my mechanic 7.5 hours but he could only charge me for book time!!!!
The dash was off ... stereo out ... inside of car almost apart!!! Roof was off so the mechanic had somewhere to put his feet!!!
:yesnod: Just a horrible job and yes ... practise tour YOGA for about a week before ya start!!!!

:seeya
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Old Oct 1, 2002 | 10:58 AM
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From: Sauk Rapids MN
Default Re: Advise please!..heater core replacement (Vette9d1)

After reading one of the posts here that referenced an article on the subject (Don't try this at home), I took mine in to the shop. They replaced the heater core and also the heater shutoff valve. The total bill set me back quite a bit, but it's done and I didn't swear at all (but I cried as I paid the bill). Good luck, whichever route you choose to take! :)
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Old Oct 1, 2002 | 11:16 AM
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Default Re: Advise please!..heater core replacement (VQT88Vette)

I'm confused.

If you read this article that VQT88Vette posted links to:

http://temp.corvetteforum.net/c4/scoob//c4heater01.jpg
http://temp.corvetteforum.net/c4/scoob//c4heater02.jpg

It says in the article that in 1990 GM redesigned the dash/firewall so you could reach the heater core from the engine compartment.

Is this correct?

The original poster said he was replacing the heater core in a 1991.

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Old Oct 1, 2002 | 12:23 PM
  #8  
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From: Life's tough, wear a helmet.
Default Re: Advise please!..heater core replacement (Bodhi)

2 more pages to that article:
http://temp.corvetteforum.net/c4/scoob//c4heater03.jpg http://temp.corvetteforum.net/c4/scoob//c4heater04.jpg
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