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

Another infotainment unit problem

Thread Tools
 
Search this Thread
 
Old Nov 14, 2019 | 06:11 PM
  #1  
dcarr's Avatar
dcarr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2007
Posts: 290
Likes: 35
From: St Augustine Florida
Default Another infotainment unit problem

2016
Car is at dealership now, they have replaced the infotainment head unit screen with a new one. Problem still exists where screen will go black, and, or freeze up not allowing any selections between settings. These were the symptoms when I brought it in originally.
Serivice advisor is getting GM Tech Assistance involved tomorrow.
Anyone know what I can look forward to as a fix?
Reply
Old Nov 14, 2019 | 06:21 PM
  #2  
JMII's Avatar
JMII
Safety Car
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jul 2018
Posts: 4,303
Likes: 2,055
From: Margate, FL
Default

HMI unit gone bad? Do the buttons under the screen related to the radio and / or volume **** quit working too?
Reply
Old Nov 14, 2019 | 06:26 PM
  #3  
dcarr's Avatar
dcarr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2007
Posts: 290
Likes: 35
From: St Augustine Florida
Default

Screen is in a frozen mode nothing will work
Reply
Old Nov 14, 2019 | 06:51 PM
  #4  
JMII's Avatar
JMII
Safety Car
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jul 2018
Posts: 4,303
Likes: 2,055
From: Margate, FL
Default

Originally Posted by dcarr
Screen is in a frozen mode nothing will work
My '14 has this problem occasionally but its not the screen, nor the radio module itself... based on my research on this forum it is the HMI module. I don't want to jinx myself, but over the last two weeks it has been working perfectly.

Interested in what the dealer does to resolve your case. Good luck.

Reply
Old Nov 14, 2019 | 07:11 PM
  #5  
dcarr's Avatar
dcarr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2007
Posts: 290
Likes: 35
From: St Augustine Florida
Default Infotainment unit problem

Originally Posted by JMII
My '14 has this problem occasionally but its not the screen, nor the radio module itself... based on my research on this forum it is the HMI module. I don't want to jinx myself, but over the last two weeks it has been working perfectly.

Interested in what the dealer does to resolve your case. Good luck.
Unit was reprogrammed, not sure if that involves the HMI or not, but same problem symptoms still existed.
I will post a remedy, car has been at dealership now a week

Reply
Old Nov 14, 2019 | 07:16 PM
  #6  
dcarr's Avatar
dcarr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2007
Posts: 290
Likes: 35
From: St Augustine Florida
Default Infortaiment unit

Wanted to say, my problems of frozen screen, or blacking out were occasionally happening over the last year until it consistently went bad
Reply
Old Nov 14, 2019 | 07:18 PM
  #7  
Evil-Twin's Avatar
Evil-Twin
Team Owner
 
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Default

Originally Posted by JMII
HMI unit gone bad? Do the buttons under the screen related to the radio and / or volume **** quit working too?
I agree with this diagnosis... HMI defective.
Reply
Old Nov 14, 2019 | 10:45 PM
  #8  
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: 368,648
Likes: 24,870
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

Good luck with the fix - please post up what the dealer finds and ultimately repairs.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
Old Nov 16, 2019 | 12:43 PM
  #9  
dcarr's Avatar
dcarr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2007
Posts: 290
Likes: 35
From: St Augustine Florida
Default

Anybody with this exact same problem of either a frozen, or black screen?
How did the dealer remedy? Mine is still in the shop,
thanks
Reply
Old Nov 17, 2019 | 12:24 AM
  #10  
GaToy's Avatar
GaToy
Instructor
 
Joined: Apr 2015
Posts: 131
Likes: 26
From: Fort Valley Georgia
Default

I wish someone would come out with a fixed mount aftermarket replacement.
Reply
Old Nov 20, 2019 | 12:33 PM
  #11  
dcarr's Avatar
dcarr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2007
Posts: 290
Likes: 35
From: St Augustine Florida
Default

Dealer replaced HMI module, I picked the up car this morning. My fix was a new screen infotainment unit and the HMI module.
Both service advisors said they have had numerous problems with their GM infotainment products across the line up.
Glad I had the extended CPO warranty, as this was a very expensive fix.
Keeping my fingers crossed,
thanks for the reply’s !
Dennis
Reply
Old Nov 20, 2019 | 05:03 PM
  #12  
JMII's Avatar
JMII
Safety Car
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jul 2018
Posts: 4,303
Likes: 2,055
From: Margate, FL
Default

Originally Posted by dcarr
Dealer replaced HMI module, I picked the up car this morning. My fix was a new screen infotainment unit and the HMI module.
I wonder if its just policy to replace both? Was the screen really necessary or would the HMI module alone fix things?

Also for the record mine hasn't locked up in nearly a month. So it fixed itself? I did run multiple hot laps at Sebring so maybe that scared it into behaving correctly
Reply
Old Nov 20, 2019 | 06:05 PM
  #13  
dcarr's Avatar
dcarr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2007
Posts: 290
Likes: 35
From: St Augustine Florida
Default

Not sure about policy. Dealer evidently thought screen was initial problem, and mentioned they have serviced quite a few. I say this because you would think they would know how to go about a fix. GM tech got involved last week and approved a HMI module replacement also at this time.
My system was very sporadic over the last 2 plus years, until I just got tired out it going out more consistently as of late.
Personally this infotainment system scares me, as I’ve started shopping extended warranties, till the C8 becomes more available. Hopefully the new models will be improved.
Reply
Old Nov 20, 2019 | 06:30 PM
  #14  
JMII's Avatar
JMII
Safety Car
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jul 2018
Posts: 4,303
Likes: 2,055
From: Margate, FL
Default

Originally Posted by dcarr
I say this because you would think they would know how to go about a fix.
That is my worry. I don't think GM understands the root cause here, they just see a dead screen and replace it. This is like buying a new computer because suddenly you can't type, then later you learn the keyboard was just unplugged

Based on my research these screens do have problems (especially the early years like my 2014) - as they go up and down a small blue wire becomes damaged. If that happens then yes the screen will be dead but the other audio controls (on the steering wheel) should work. The screen is just an interface unit, like a monitor or keyboard, its not the brains (computer) behind the infotainment system... that's the HMI module.

The reason I mentioned this is by far the HMI module is easier to replace so it shocks me that GM tears the whole dash apart attempting fix not once but twice! The labor hours and risk of damage when replacing the screen is very high, where as swapping an HMI unit appears to be a piece of cake in comparison
Reply
Old Nov 20, 2019 | 07:40 PM
  #15  
dcarr's Avatar
dcarr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2007
Posts: 290
Likes: 35
From: St Augustine Florida
Default

Not sure about the root cause,,but agree with your computer keyboard analogy.
Screen and all audio controls including steering wheel were inoperative In my case. I’m sure it was a labor, and time intensive fix.
You would think our dealership network would know how to sequence and go about diagnosing such problems.
Reply

Get notified of new replies

To Another infotainment unit problem





All times are GMT -4. The time now is 07:32 PM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
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-7
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-8
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-9
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