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

Code p0301

Thread Tools
 
Search this Thread
 
Old Jun 1, 2025 | 06:06 PM
  #1  
Tommy79's Avatar
Tommy79
Thread Starter
Burning Brakes
Veteran: Air Force
Liked
Loved
Community Favorite
 
Joined: May 2015
Posts: 930
Likes: 333
From: Sherrills Ford North Carolina
Default Code p0301

As luck would have it, I was scheduled today for a Carvana pickup. Pulled my car out of the garage today and the check engine light comes on (canceled the pickup.) Pulled the code and it was a P0301 (misfire on cylinder #1.)

Scheduled tow 7am tomorrow. Back to the dealership that it just left on Friday for the shudder issue. I'm wondering now if it was the shudder issue and just a misfire.

10k miles on my car and I had this happed 2 other times. Another reason I'm dumping my Corvette. GOURGOUS car... POS under the hood.

Got a 2019 Porsche Certified Cayman to replace the Corvette. Guarantied not to live at the dealership like my Corvette.

Thanks for letting me vent.....


And a P00301 is not covered under the GMPP warranty... So more $$ into the car before its gone.. PLUS, PAY FOR A TOW.



Reply
Old Jun 1, 2025 | 06:45 PM
  #2  
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: 367,676
Likes: 24,663
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 '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Default

Sorry to hear about the bad luck with the car. Good luck with the Porsche and hope you are right about the lack of dealership visits with the new one.

If the code happened two other times on your car, I think I would have tried a different dealership for a second opinion.
Reply
Old Jun 1, 2025 | 06:57 PM
  #3  
Tommy79's Avatar
Tommy79
Thread Starter
Burning Brakes
Veteran: Air Force
Liked
Loved
Community Favorite
 
Joined: May 2015
Posts: 930
Likes: 333
From: Sherrills Ford North Carolina
Default

The issue was fixed the first time (about 2 years ago.) Single spark plug replaced ($340.00.) This time, it felt like the shudder issue and the dealership did a second triple flush AND replaced another single spark plug. Drove it home with no issues. Then 2 days later, it's dead again with the P0301.

I'm thinking the issue was a missing issue and NOT a shudder problem and the dealership hit me for 1k the triple flush that I really didn't need.

A Porsche can't live at the dealership more than my Corvette did.

I'll find out.. This will be the first time in about 25+ years without at least one Corvette in my garage. I will miss it... But not the hassle of owning one.

NOTE: Owning a Corvette MAY require alcohol use.

Thanks for letting me vent.....




Reply
Old Jun 2, 2025 | 10:39 AM
  #4  
kodpkd's Avatar
kodpkd
Le Mans Master
Active Streak: 30 Days
Community Builder
Community Influencer
Top Answer: 1
 
Joined: Jun 2019
Posts: 5,391
Likes: 2,126
From: Loveland
Default

So with a spark plug misfire code, the car wouldn't start?
Reply
Old Jun 2, 2025 | 11:20 AM
  #5  
PJO's Avatar
PJO
Melting Slicks
20 Year Member
Veteran: Marine Corps
Liked
Community Favorite
 
Joined: May 2002
Posts: 2,474
Likes: 755
From: Laporte, IN
Default

Just a thought changing a spark plug for the same issue 3 time. Tells you its not the spark plug the cause is something else in the system.
Reply
Old Jun 2, 2025 | 03:11 PM
  #6  
Tommy79's Avatar
Tommy79
Thread Starter
Burning Brakes
Veteran: Air Force
Liked
Loved
Community Favorite
 
Joined: May 2015
Posts: 930
Likes: 333
From: Sherrills Ford North Carolina
Default Agree....

Originally Posted by PJO
Just a thought changing a spark plug for the same issue 3 time. Tells you its not the spark plug the cause is something else in the system.
The Code P0301 says not to drive the car. And with it missing so bad, would not be too good for the car. Tow job.... $172.00

Stayed at the dealership and waiting for the car. Listening to others tell the horror stories about their cars. The dealership pulled a P0300 and P0301 and said that it seems multiple spark plug were misfiring. The P0300 just could not determine the one. So, changed all the spark plugs. Car runs like new now!

SHOCKING,,,,, The dealership did not charge me anything. But I did pay 1k for a triple flush I probably didn't need. Call it even.

As my trust on the car is long gone, I'll still selling it.



Reply
Old Jun 3, 2025 | 08:38 AM
  #7  
Tinkertech's Avatar
Tinkertech
Melting Slicks
All Eyes On Me
Top Answer: 1
Top Answer: 3
Top Answer: 5
 
Joined: Feb 2018
Posts: 2,126
Likes: 1,012
From: North Texas
Default

A good tech along with a good scanner or scope should have easily determined which spark plug was causing the issue and just replaced that one if it was proven to be a bad plug. There are way too many things that could cause a misfire besides just plugs.

But I must admit that I have always replaced plugs in a complete set in the past when I was convinced that it truly was a bad plug.
Reply
Old Jun 3, 2025 | 08:49 AM
  #8  
Tommy79's Avatar
Tommy79
Thread Starter
Burning Brakes
Veteran: Air Force
Liked
Loved
Community Favorite
 
Joined: May 2015
Posts: 930
Likes: 333
From: Sherrills Ford North Carolina
Default Codes

Originally Posted by Tinkertech
A good tech along with a good scanner should have easily determined which spark plug was causing the issue and just replaced that one. If it was truly a bad plug. There are way too many things that could cause a misfire.

But I must admit that I have always replaced plugs in a complete set in the past when I was convinced that it truly was a bad plug.
Agree... But its my understanding that the P0301 is a misfire on plug #1. The P0300 is a misfire too, but the system was unable to determine what plug was misfiring OR it didn't misfire enough. When this happened 2 years ago, they should have replaced all the plugs. BUT.... 10k and the plugs are bad??? I do feel my car has other issues in the fuel system.

My brother called me about the car and he wanted to buy it. Then I told him my issues. I would NOT sell this car to anyone I know.

CARVANA coming to pick it up tomorrow -- Wednesday.

2 best days of owning a Corvette --- The day you buy it and the day you sell it.





Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Joe Kucinski
story-1

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

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

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

 Michael S. Palmer
story-4

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

 Joe Kucinski
story-5

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

 Michael S. Palmer
story-6

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-9

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
Old Jun 4, 2025 | 07:51 AM
  #9  
Tinkertech's Avatar
Tinkertech
Melting Slicks
All Eyes On Me
Top Answer: 1
Top Answer: 3
Top Answer: 5
 
Joined: Feb 2018
Posts: 2,126
Likes: 1,012
From: North Texas
Default

Dealerships, warranty, most manufactures will only warranty, reimburse the dealership, only for the one faulty item, ie: only one plug not all of them. The same for other multiple items, brakes, shocks, tires etc........

If you're a tech, better guess right!
Reply
Old Jun 5, 2025 | 07:41 PM
  #10  
Tommy79's Avatar
Tommy79
Thread Starter
Burning Brakes
Veteran: Air Force
Liked
Loved
Community Favorite
 
Joined: May 2015
Posts: 930
Likes: 333
From: Sherrills Ford North Carolina
Default

All done!!!! Carvana picked up my car @ 3:00pm today... Direct deposit @ 7:00pm. Could not have been easier.

I'll be around for a few weeks as I clean out my garage of Corvette stuff. I'll also donate some items to forum members for just the shipping cost.

All the help I had here... Seems like a good way to pay it back.

The local Dealer is going to miss me.

Thanks again to all!!!!!!!!

Tom
Reply

Get notified of new replies

To Code p0301





All times are GMT -4. The time now is 06:56 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE