Weird occurance
Thread Starter
Racer
Joined: Jul 2019
Posts: 385
Likes: 196
From: Jersey Shore
Weird occurance
Hi All, I took my car out today, (2013 LS7 convertible, 15,000 miles) because it was a gorgeous day. Ran a few errands, on my last stop the car struggled to start. When it did I got a bunch of error codes. Traction control, etc. The car ran rough on the way home and I had no tach. It was odd because it ran like a top all day. I brought it home and hooked up my tender, thinking it might be a drop in voltage that might have cause a problem. I'm not too worried about it but thought I'd ask you guys what might it be. Thanks
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From: WI
Safety Car
Joined: May 2016
Posts: 4,672
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From: Erlanger, Kentucky
Check to see if a plug wire may have come off one of the coils. Even if one didn't fully fall off, it's possible it is not actually connected. This is a relatively common occurrence with OEM GM plug wires.
My car did the exact same thing the day after I bought it. Hard to start, TCM light, etc. A plug wire had come off of one of the coils.
If it's not that, it is likely your battery.
My car did the exact same thing the day after I bought it. Hard to start, TCM light, etc. A plug wire had come off of one of the coils.
If it's not that, it is likely your battery.
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Start with the 2 suggestions above
Thread Starter
Racer
Joined: Jul 2019
Posts: 385
Likes: 196
From: Jersey Shore
Check to see if a plug wire may have come off one of the coils. Even if one didn't fully fall off, it's possible it is not actually connected. This is a relatively common occurrence with OEM GM plug wires.
My car did the exact same thing the day after I bought it. Hard to start, TCM light, etc. A plug wire had come off of one of the coils.
If it's not that, it is likely your battery.
My car did the exact same thing the day after I bought it. Hard to start, TCM light, etc. A plug wire had come off of one of the coils.
If it's not that, it is likely your battery.
Thank you. The battery isn't old but I haven't had the tender on it for a few weeks. It was weak starting especially after it was hot. I'm thinking I had a voltage drop. I'm charging it now and I'll see what happens.
Safety Car
Joined: Aug 2013
Posts: 4,430
Likes: 609
From: Minneapolis Mn
This is something I've read, so take it as such and check what's been suggested first. I've read that the starter can get heat soaked causing starting issues. Some have said to use a C7 starter instead as it's supposed to be better. Another would be if you can find a heat shield for the existing starter to prevent some heat transfer in the first place. I have used a heat shield on a Chevelle with starter issues and in my case, it helped a lot. Good luck.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,643
Likes: 4,082
From: Cape Coral, Florida
Hi All, I took my car out today, (2013 LS7 convertible, 15,000 miles) because it was a gorgeous day. Ran a few errands, on my last stop the car struggled to start. When it did I got a bunch of error codes. Traction control, etc. The car ran rough on the way home and I had no tach. It was odd because it ran like a top all day. I brought it home and hooked up my tender, thinking it might be a drop in voltage that might have cause a problem. I'm not too worried about it but thought I'd ask you guys what might it be. Thanks
Well WHAT were the DTC's shown ??
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Thread Starter
Racer
Joined: Jul 2019
Posts: 385
Likes: 196
From: Jersey Shore
This is something I've read, so take it as such and check what's been suggested first. I've read that the starter can get heat soaked causing starting issues. Some have said to use a C7 starter instead as it's supposed to be better. Another would be if you can find a heat shield for the existing starter to prevent some heat transfer in the first place. I have used a heat shield on a Chevelle with starter issues and in my case, it helped a lot. Good luck.
Thank you.
Racer
Joined: Apr 2024
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From: SoFlo
2024 C6 of the Year Finalist - Unmodified
Something I started doing about a year ago and it seems to help keep these gremlins at bay. Once every month or so I disconnect the battery and put my tender on it. I let it sit overnight and reconnect the battery in the morning. This tops off the battery and resets all the modules in the car.
Thread Starter
Racer
Joined: Jul 2019
Posts: 385
Likes: 196
From: Jersey Shore
Something I started doing about a year ago and it seems to help keep these gremlins at bay. Once every month or so I disconnect the battery and put my tender on it. I let it sit overnight and reconnect the battery in the morning. This tops off the battery and resets all the modules in the car.
Thank you
Instructor
Joined: May 2022
Posts: 224
Likes: 78
Check the battery and ground connections. Also the exhaust is super close to the starter and the heat doesnt help. I have my starter wrapped with a heat blanket.
The No tach is due to the slow start and the crank and cam sensors do not like that.
The No tach is due to the slow start and the crank and cam sensors do not like that.
Thread Starter
Racer
Joined: Jul 2019
Posts: 385
Likes: 196
From: Jersey Shore
Thank you.