2017 GS - Multiple Service errors on start
Thread Starter
Instructor
Joined: Apr 2002
Posts: 228
Likes: 11
From: Southern Maryland
2017 GS - Multiple Service errors on start
Hi All,
I haven't posted in forever... went to start my 2017 C7 Grand Sport M7 today and it started but I have multiple service errors - service airbag, service tire monitor system, service theft deterrent and service suspension system. I searched around but didn't find any similar posts. Any help would be much appreciated.
I haven't posted in forever... went to start my 2017 C7 Grand Sport M7 today and it started but I have multiple service errors - service airbag, service tire monitor system, service theft deterrent and service suspension system. I searched around but didn't find any similar posts. Any help would be much appreciated.
Safety Car
Joined: Dec 2012
Posts: 3,850
Likes: 1,860
From: St. Louis Metro East IL
A low battery voltage can cause a lot of gremlins. Did these errors occur on subsequent starts or just the first start of the day?
Probably time to have your battery checked or replaced. Also change fob batteries if they are 3 years old.
Ron
Probably time to have your battery checked or replaced. Also change fob batteries if they are 3 years old.
Ron
Thread Starter
Instructor
Joined: Apr 2002
Posts: 228
Likes: 11
From: Southern Maryland
Thanks for the response. I replaced the battery last year for the first time. Original owner.. I turned it off and started it again with the same result. Then I had to leave for work.
Safety Car
Joined: Dec 2012
Posts: 3,850
Likes: 1,860
From: St. Louis Metro East IL
Put the car on a charger or go for a 30 min drive to fully charge the battery.
If the problem persists have the battery checked and if it tests good, verify the connections.
See Post #7 in this thread for what to check at the battery:
https://www.corvetteforum.com/forums...n-t-start.html
It is a good idea to use a battery maintainer if the car will stay parked for a couple weeks or more.
Ron
If the problem persists have the battery checked and if it tests good, verify the connections.
See Post #7 in this thread for what to check at the battery:
https://www.corvetteforum.com/forums...n-t-start.html
It is a good idea to use a battery maintainer if the car will stay parked for a couple weeks or more.
Ron
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,595
Likes: 4,057
From: Cape Coral, Florida
Hi All,
I haven't posted in forever... went to start my 2017 C7 Grand Sport M7 today and it started but I have multiple service errors - service airbag, service tire monitor system, service theft deterrent and service suspension system. I searched around but didn't find any similar posts. Any help would be much appreciated.
I haven't posted in forever... went to start my 2017 C7 Grand Sport M7 today and it started but I have multiple service errors - service airbag, service tire monitor system, service theft deterrent and service suspension system. I searched around but didn't find any similar posts. Any help would be much appreciated.
Thread Starter
Instructor
Joined: Apr 2002
Posts: 228
Likes: 11
From: Southern Maryland
Ok. Had it on the charger since Friday. Haven’t had a real load test done yet. Volts look good using a multimeter. Went to 12.3vdc at crank. A previous symptom was the DIC displays took a few seconds longer to come on than normal. Disconnected battery for a minute and dic lights up normally. Before and after battery disconnect the gages aren’t deflecting / reading. Is this still likely battery related? Working on getting an obd2… don’t want to drive to get a load test as it is.
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
Le Mans Master
Joined: Feb 2012
Posts: 5,371
Likes: 2,878
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
2015 C2 of the Year Finalist
Ok. Had it on the charger since Friday. Haven’t had a real load test done yet. Volts look good using a multimeter. Went to 12.3vdc at crank. A previous symptom was the DIC displays took a few seconds longer to come on than normal. Disconnected battery for a minute and dic lights up normally. Before and after battery disconnect the gages aren’t deflecting / reading. Is this still likely battery related? Working on getting an obd2… don’t want to drive to get a load test as it is.
Put the charger back on the battery and leave it there until the charger says its topped off. Then go across it with a DVM set to DC volts. A healthy battery will show a surface charge of around 13 volts. Turn on the ignition but don't start it and after a minute turn it off and re-measure battery volts. You should see no less than 12.6 volts. anything below 12 volts will likely not crank. Never assume a battery has to be OK because of age. Batteries are like fruit, they go bad when they go bad.
Dan
Thread Starter
Instructor
Joined: Apr 2002
Posts: 228
Likes: 11
From: Southern Maryland
still broke
Battery load tested good with Foxwell tester.
Attached is a scantool report - it shows battery voltage low but other tests have not shown the same.
Same Service messages every time - service airbag, service tire monitor system, service theft deterrent and service suspension system. None of the DIC gauges show any indications/readings. No welcome message, DIC displays take several seconds longer to come on than normal. I've found 2 owner reported accounts of the SDGM being involved in instrument cluster not displaying on 2017 Grand Sports. We're still working it but it's been slow over the holidays.
Happy New Year!!
Attached is a scantool report - it shows battery voltage low but other tests have not shown the same.
Same Service messages every time - service airbag, service tire monitor system, service theft deterrent and service suspension system. None of the DIC gauges show any indications/readings. No welcome message, DIC displays take several seconds longer to come on than normal. I've found 2 owner reported accounts of the SDGM being involved in instrument cluster not displaying on 2017 Grand Sports. We're still working it but it's been slow over the holidays.
Happy New Year!!
Race Director
Joined: Oct 2008
Posts: 16,670
Likes: 7,738
From: NJ
Warranty the battery. If no go replace the battery. Its either a battery with a bad cell or a terminal/ground issue highly unlikely.
Other possible is a wire somewhere by a rodent. But KISS first change the battery stop screwing with that same battery to eliminate it as the issue.
Other possible is a wire somewhere by a rodent. But KISS first change the battery stop screwing with that same battery to eliminate it as the issue.
Le Mans Master
Joined: Feb 2012
Posts: 5,371
Likes: 2,878
From: Western Massachusetts
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
2015 C2 of the Year Finalist
Battery load tested good with Foxwell tester.
Attached is a scantool report - it shows battery voltage low but other tests have not shown the same.
Same Service messages every time - service airbag, service tire monitor system, service theft deterrent and service suspension system. None of the DIC gauges show any indications/readings. No welcome message, DIC displays take several seconds longer to come on than normal. I've found 2 owner reported accounts of the SDGM being involved in instrument cluster not displaying on 2017 Grand Sports. We're still working it but it's been slow over the holidays.
Happy New Year!!
Attached is a scantool report - it shows battery voltage low but other tests have not shown the same.
Same Service messages every time - service airbag, service tire monitor system, service theft deterrent and service suspension system. None of the DIC gauges show any indications/readings. No welcome message, DIC displays take several seconds longer to come on than normal. I've found 2 owner reported accounts of the SDGM being involved in instrument cluster not displaying on 2017 Grand Sports. We're still working it but it's been slow over the holidays.
Happy New Year!!
You all have been told over and over that a failing battery, which might otherwise crank my 65 L78, will cause system disruption in a C7. There are modules with microprocessors littered about a C7 and some of them do not like voltage drop.
Change your battery. A battery can load test OK and have an intermittent inter-cell short. I had them crank fine and go to 0 volts, stone dead but then recover to 9 volts.
Dan
Administrator
Joined: Mar 2001
Posts: 368,324
Likes: 24,777
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
Good luck - does sound like a weak battery issue. And moving this to C7 Tech for further discussion.
Burning Brakes
Joined: Nov 2016
Posts: 1,192
Likes: 437
From: San Dimas CA
Thread Starter
Instructor
Joined: Apr 2002
Posts: 228
Likes: 11
From: Southern Maryland
yes I’m worried about possible rodent damage but hoping to put together enough info with symptoms to have an educated guess where to look without taking the whole dang car apart.
Ive had a mouse trap in the garage now for a couple months but haven’t caught a damn thing so 🤷♀️ who knows.
Thank you All and happy new year
