Heater Core Replacement
Advanced
Joined: Jul 2005
Posts: 81
Likes: 1
From: Prince George B.C.
I did one on a 90 and had to pull the dash. I need to change a control module on top of the heater box and some said it could be done with out pulling the dash but I couldn't . changed the core at the same time.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
This an excellent description of what to do, with plenty of pictures:
https://www.corvetteforum.com/forums...post1569252027
Another take on this project:
https://www.corvetteforum.com/forums...post1543645426
Personally I thought it was easiest to remove the dash pad. I've done this job twice...
https://www.corvetteforum.com/forums...post1569252027
Another take on this project:
https://www.corvetteforum.com/forums...post1543645426
Personally I thought it was easiest to remove the dash pad. I've done this job twice...
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
I think the engineers that designed the dash and parts accessibility should all be sent to Gitmo for water boarding.... They are evil people and bet they chuckled when done wanting to film the frustration of someone working on it. I can picture them sitting in a recliner with a cold beer and peanuts roaring in laughter!
Burning Brakes
Joined: Oct 2001
Posts: 911
Likes: 5
From: TN
heater core
I changed my 1985's heater core years ago. Just took my time and was not in a hurry to get it done. I did remove the top dash panel. Used my 1985's GM service manual for removal information.
When I drain my anti-freeze I remove the engine's knock sensor and having the cooling option remove the drivers side engine hose above the oil filter to get a complete drain.
When I drain my anti-freeze I remove the engine's knock sensor and having the cooling option remove the drivers side engine hose above the oil filter to get a complete drain.
Oil Producer
Joined: Apr 2014
Posts: 9,371
Likes: 2,736
i did my 87 this past spring. other than adding maybe a bit of light, i cant figure oit what removing the dash pad would have done.
maybe the &7 is diferent because there was a tight almost javket covering and you couldnt access or see the heater box or anything because this jacket thing covered it.
i do have a thread here where i showed what i did to a cheap socket i *think* it was a 13. it was used on the top of the cross brace to put it back together. it was too tight to use a full length socket and making it shorter worked great and it was a simple job.