C7 General Discussion General C7 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

C7 coolant flush

Thread Tools
 
Search this Thread
 
Old Aug 17, 2024 | 04:03 PM
  #1  
terry stambaugh's Avatar
terry stambaugh
Thread Starter
4th Gear
 
Joined: Oct 2022
Posts: 4
Likes: 0
Default C7 coolant flush

Dealer recommended coolant flush on my c7 at 30,000 for $459. Seems like a lot.
Reply
Old Aug 17, 2024 | 04:53 PM
  #2  
SoCalDavid's Avatar
SoCalDavid
Advanced
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jun 2023
Posts: 65
Likes: 27
Default

Originally Posted by terry stambaugh
Dealer recommended coolant flush on my c7 at 30,000 for $459. Seems like a lot.
I think it sounds about right. You are going to pay a premium for service at any Dealership. I would find a good reputable independent mechanic. It's an easy DIY job. I think it took me less than an hour.

https://www.google.com/search?sca_es...HNeo14mh0,st:0
Reply
Old Aug 17, 2024 | 04:56 PM
  #3  
DrivesWithTwoFeet's Avatar
DrivesWithTwoFeet
Melting Slicks
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2018
Posts: 2,014
Likes: 1,591
From: Clermont, Florida
Default

Why did they recommend a coolant flush?
Reply
Old Aug 17, 2024 | 04:59 PM
  #4  
Gearhead Jim's Avatar
Gearhead Jim
Team Owner
Supporting Member
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2000
Posts: 25,019
Likes: 2,713
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Default

Our Owner Manual recommends just a drain & refill, which is easier/cheaper than a flush.
Reply
Old Aug 17, 2024 | 05:42 PM
  #5  
MY04CE's Avatar
MY04CE
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2003
Posts: 1,370
Likes: 472
From: Springfield VA
Default

While price seems OK for a dealer, why now at 30K miles? What year is your Vette? Coolant flush is due at five years regardless of mileage, so it may be appropriate since C7s started in 2014.
Reply
Old Aug 17, 2024 | 06:12 PM
  #6  
ArchitectMike's Avatar
ArchitectMike
Instructor
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2008
Posts: 199
Likes: 92
From: Wynnewood Pennsylvania
Default

Seems like a whole lot. My dealer just did clutch, transmission, differential, brake and coolant changes for $1,030.00
Reply
Old Aug 17, 2024 | 06:26 PM
  #7  
SoCalDavid's Avatar
SoCalDavid
Advanced
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jun 2023
Posts: 65
Likes: 27
Default

Originally Posted by Gearhead Jim
Our Owner Manual recommends just a drain & refill, which is easier/cheaper than a flush.
Just as easy to do it right and remove all the old coolant. Easy to do, Step 1 - Drain the radiator (you will get 1.5 gallons). Fill with 1.5 gal of water, run the engine. Repeat Step 1 (2x) . Fill with 1 gallon of Dexcool concentrate and top off with water. (1 gal of Dexcool concentrate will give you the recommended Coolant/water ratio) Easy peasy!
Reply
Old Aug 17, 2024 | 06:34 PM
  #8  
F4Gary's Avatar
F4Gary
Race Director
Veteran: Air Force
25 Year Member
Liked
Community Favorite
 
Joined: Feb 2001
Posts: 11,306
Likes: 2,096
From: Grapevine Tx
2018 C3 of Year Finalist
2016 C3 of the Year Finalist
Default

Originally Posted by SoCalDavid
Just as easy to do it right and remove all the old coolant. Easy to do, Step 1 - Drain the radiator (you will get 1.5 gallons). Fill with 1.5 gal of water, run the engine. Repeat Step 1 (2x) . Fill with 1 gallon of Dexcool concentrate and top off with water. (1 gal of Dexcool concentrate will give you the recommended Coolant/water ratio) Easy peasy!
That's what I did but I flushed it 3 times with distilled water then the 1 gallon of Dexcool.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Aug 17, 2024 | 07:01 PM
  #9  
Gearhead Jim's Avatar
Gearhead Jim
Team Owner
Supporting Member
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2000
Posts: 25,019
Likes: 2,713
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Default

Originally Posted by SoCalDavid
Just as easy to do it right and remove all the old coolant. Easy to do, Step 1 - Drain the radiator (you will get 1.5 gallons). Fill with 1.5 gal of water, run the engine. Repeat Step 1 (2x) . Fill with 1 gallon of Dexcool concentrate and top off with water. (1 gal of Dexcool concentrate will give you the recommended Coolant/water ratio) Easy peasy!
I'll let you decide what "just as easy" means, but doing it three times instead of once doesn't meet my definition.
Our dealer has the equipment to do an actual flush, and that is easy for me. But it does cost a little more.
Either way works.
Reply
Old Aug 17, 2024 | 07:31 PM
  #10  
Avanti's Avatar
Avanti
Race Director
25 Year Member
Community Builder
Loved
Community Favorite
 
Joined: Mar 2001
Posts: 19,965
Likes: 6,770
From: Bonneville Salt Flats
Default

I've just done as GM has recommended on all my aluminum-engined Vettes, one 24-years old, without incident. Just sayin'...
Reply
Old Aug 18, 2024 | 05:54 AM
  #11  
Vetteman Jack's Avatar
Vetteman Jack
Administrator
Supporting Lifetime
Veteran: Navy
St. Jude 20 Year Donor
25 Year Member
Veteran: Reserves
 
Joined: Mar 2001
Posts: 368,390
Likes: 24,795
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Default

I personally think $459 is high, but I do not know what your local labor rate is for doing the work.
Reply
Old Aug 18, 2024 | 08:25 AM
  #12  
fuzzy03cls's Avatar
fuzzy03cls
Burning Brakes
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jun 2023
Posts: 956
Likes: 440
From: FL
Default

About normal for a dealer these days.
I'm @ 5 years & will be changing mine & I only have 15K miles. Going to have the dealer do it since the oil change is also coming up. I have a maintenance package, but I'm not sure if that covers the coolant & brake fluids.

Reply
Old Aug 18, 2024 | 08:35 AM
  #13  
Jerrys-1LT's Avatar
Jerrys-1LT
Advanced
All Eyes On Me
Top Answer: 1
 
Joined: Jul 2019
Posts: 97
Likes: 71
From: Palm Desert CA
Default

Two months ago my dealer charged me $971 for the following: oil & filter, coolant exchange, transmission exchange, differential exchange, brake fluid exchange, new air filter and new cabin filter.

The coolant exchange was $147 of that.
Reply
Old Aug 18, 2024 | 05:44 PM
  #14  
IA-SteveB's Avatar
IA-SteveB
Pro
Photogenic
Liked
Loved
Community Favorite
 
Joined: Oct 2023
Posts: 668
Likes: 917
From: Iowa
Default

This is what makes DIY so nice if one is comfortable with that. Access to resources like this site makes things so easy to accomplish and it leaves more money for mods.

I still smile when i think about the days riding my bike to the library to photocopy Chilton manual pages for my 1979 Chevette.

Last edited by IA-SteveB; Aug 18, 2024 at 06:28 PM.
Reply
Old Aug 19, 2024 | 02:16 AM
  #15  
BluRace's Avatar
BluRace
Racer
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Mar 2022
Posts: 354
Likes: 193
Default

i did it myself

slow process, messy, but easy
Reply
Old May 1, 2025 | 04:57 PM
  #16  
joeone19's Avatar
joeone19
Intermediate
Liked
Loved
Community Favorite
 
Joined: Jan 2024
Posts: 27
Likes: 4
From: North GA
Default Dexcool

Can we use Dexcool 50/50 Premix Extended life coolant in our C7 models? I prefer the premix in my other vehicles.
Reply
Old May 1, 2025 | 06:04 PM
  #17  
Patman's Avatar
Patman
Race Director
25 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2001
Posts: 15,324
Likes: 2,080
From: Guelph, Ontario
Default

I just had a coolant change done by the Chevy dealer here in Guelph Ontario and it was $250 CDN, or $180 US
Reply

Get notified of new replies

To C7 coolant flush

Old May 1, 2025 | 06:09 PM
  #18  
Macleod52's Avatar
Macleod52
Drifting
10 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Jun 2013
Posts: 1,294
Likes: 367
From: Iowa
Default

Originally Posted by terry stambaugh
Dealer recommended coolant flush on my c7 at 30,000 for $459. Seems like a lot.
Extremely high. Last year my dealer replaced mine for under $200.
Reply
Old May 1, 2025 | 06:30 PM
  #19  
RacerRik's Avatar
RacerRik
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Sep 2019
Posts: 1,355
Likes: 635
From: St. Louis
Default

Originally Posted by joeone19
Can we use Dexcool 50/50 Premix Extended life coolant in our C7 models? I prefer the premix in my other vehicles.
You can use the pre-mix, but you will not be able to get the concentration called for by GM.
Reply
Old May 1, 2025 | 06:59 PM
  #20  
joeone19's Avatar
joeone19
Intermediate
Liked
Loved
Community Favorite
 
Joined: Jan 2024
Posts: 27
Likes: 4
From: North GA
Default

Can I not use this mixture?
Can I not use this mixture?
Reply



All times are GMT -4. The time now is 03:44 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE