Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

2003 Maintenance

Thread Tools
 
Search this Thread
 
Old Jul 10, 2023 | 04:51 PM
  #1  
Vader_C5's Avatar
Vader_C5
Thread Starter
Melting Slicks
Supporting Gold
10 Year Member
Community Influencer
Community Favorite
Top Answer: 5
 
Joined: May 2013
Posts: 3,013
Likes: 1,431
From: New Jersey
2025 Corvette of the Year Finalist - Unmodified
2024 C2 of the Year Winner - Unmodified
2024 C1 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2023 C5 of the Year Winner - Unmodified
St. Jude Donor '25
Default 2003 Maintenance

As some of you know, i have a new to me 2003 Vette with 32k miles and looking to do some maintenance/upkeep. Please let me know if I am missing anything from my list!
  1. Fluids
    1. Transmission Fluid
    2. Differential Fluid
    3. Power Steering Fluid
    4. Coolant
      1. Fluid
      2. Expansion Tank
      3. Hoses
    5. Clutch Fluid
  2. Suspension
    1. C5 Z51 Sway Bar and Bushings
    2. Sway Bar End Links
    3. Outer Tie Rod Ends
  3. Belt Drive
    1. Drive belt and tensioner
    2. AC belt and tensioner
    3. Idler pulley

Last edited by Vader_C5; Jul 10, 2023 at 04:56 PM.
Reply
Old Jul 10, 2023 | 05:08 PM
  #2  
Fcar 98's Avatar
Fcar 98
Melting Slicks
25 Year Member
Liked
Loved
Top Answer: 5
 
Joined: Dec 2000
Posts: 3,280
Likes: 1,097
From: Pittsburgh PA
Default

20 years old. Plugs and wires. Probably still good but if you plan on keeping the car change because of age. The older that car gets the harder they will be to remove
Reply
Old Jul 10, 2023 | 06:24 PM
  #3  
billschroeder5842's Avatar
billschroeder5842
Zen Vet Master Level VII
Supporting Gold
Veteran: Navy
10 Year Member
Liked
Loved
 
Joined: Mar 2016
Posts: 5,218
Likes: 1,174
From: Southlake, TX
Default

Have you installed a LCM5 yet?
Reply
Old Jul 10, 2023 | 06:34 PM
  #4  
Dirty Dog's Avatar
Dirty Dog
Instructor
 
Joined: Nov 2016
Posts: 244
Likes: 103
From: Pueblo West CO
Default

LCM5. Skip shift eliminator. Brake fluid. Brake pads & rotors. Blower.
Reply
Old Jul 10, 2023 | 11:50 PM
  #5  
xcarter's Avatar
xcarter
Instructor
Liked
Loved
Community Favorite
 
Joined: Aug 2022
Posts: 143
Likes: 188
From: Portland, OR
Default

Check the parking brake. Mine was 0% functional, needed new shoes.

If you're doing the front-engine parts, peak at the Harmonic Balancer, might be due, might not.
Reply
Old Jul 10, 2023 | 11:51 PM
  #6  
xcarter's Avatar
xcarter
Instructor
Liked
Loved
Community Favorite
 
Joined: Aug 2022
Posts: 143
Likes: 188
From: Portland, OR
Default

Check the tire age...
Reply
Old Jul 10, 2023 | 11:53 PM
  #7  
xcarter's Avatar
xcarter
Instructor
Liked
Loved
Community Favorite
 
Joined: Aug 2022
Posts: 143
Likes: 188
From: Portland, OR
Default

Ok last one,
Check and clean the udder drains.
Reply
Old Jul 11, 2023 | 07:58 AM
  #8  
wydopnthrtl's Avatar
wydopnthrtl
Drifting
15 Year Member
Conversation Starter
Liked
Loved
 
Joined: May 2007
Posts: 1,550
Likes: 324
From: Mid Ohio
Default

Some drivers seats have a fore/aft clunk as there are some small plastic bushings that have excessive play.

Clean the door and hatch seals and coat w/dielectric grease.

Install jacking pucks

The headlight motors have a weak gear. Have yours been upgraded?

I added a battery charging wire and have it routed to the fender vent. When parked longer than a week I plug it in.

You didn't mention brake fluid... I flush mine every two yrs.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Michael S. Palmer
story-1

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

 Joe Kucinski
story-2

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

 Joe Kucinski
story-3

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

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Jul 11, 2023 | 08:17 AM
  #9  
Dads2kconvertible's Avatar
Dads2kconvertible
Melting Slicks
 
Joined: Sep 2021
Posts: 2,555
Likes: 1,213
Default

Originally Posted by wydopnthrtl
Clean the door and hatch seals and coat w/dielectric grease.
Why dielectric for those? I think silicone grease is a better option for those rubber parts.
Reply
Old Jul 11, 2023 | 08:31 AM
  #10  
Missileboy's Avatar
Missileboy
Burning Brakes
All Eyes On Me
Liked
Loved
Top Answer: 1
 
Joined: Dec 2022
Posts: 1,025
Likes: 888
From: Nappytown MD
Default

Do a complete brake system bleed and flush. Change out the fuel filter/regulator-didn't see those on your list!
Reply
Old Jul 11, 2023 | 10:42 AM
  #11  
Vader_C5's Avatar
Vader_C5
Thread Starter
Melting Slicks
Supporting Gold
10 Year Member
Community Influencer
Community Favorite
Top Answer: 5
 
Joined: May 2013
Posts: 3,013
Likes: 1,431
From: New Jersey
2025 Corvette of the Year Finalist - Unmodified
2024 C2 of the Year Winner - Unmodified
2024 C1 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2023 C5 of the Year Winner - Unmodified
St. Jude Donor '25
Default

Thanks all for your comments, I am going to do the brake fluid with new C6 Z51 Calipers & Pads/Rotors later this year. Appreciate the insight!
Reply
Old Jul 11, 2023 | 11:15 AM
  #12  
MWWarlord's Avatar
MWWarlord
Le Mans Master
Supporting Lifetime Gold
Community Builder
Photoriffic
Community Favorite
Top Answer: 5
 
Joined: Dec 2017
Posts: 5,566
Likes: 3,307
From: Virginia
2021 C5 of the Year Finalist - Modified
St. Jude Donor '21-'22
Default

Originally Posted by Dads2kconvertible
Why dielectric for those? I think silicone grease is a better option for those rubber parts.
The owner's manual calls for dielectric grease. I have found that it works great.
Reply
Old Jul 11, 2023 | 11:19 AM
  #13  
Missileboy's Avatar
Missileboy
Burning Brakes
All Eyes On Me
Liked
Loved
Top Answer: 1
 
Joined: Dec 2022
Posts: 1,025
Likes: 888
From: Nappytown MD
Default

Originally Posted by Vader_C5
Thanks all for your comments, I am going to do the brake fluid with new C6 Z51 Calipers & Pads/Rotors later this year. Appreciate the insight!
Good deal, replace the 4 soft lines with steel braided ones while you are in there (if you weren't already). My stock rubber hoses actually looked okay and were still pliable but it is much better hitting the peddle and feeling that nice solid braking feel with the new lines and fluid!
Reply

Get notified of new replies

To 2003 Maintenance





All times are GMT -4. The time now is 10:55 PM.

story-0
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-1
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-2
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-3
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
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE