# Undiagnosed charging system problem **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** pontiac, g6\ **Created:** [March 29, 2018, 3:56pm UTC](https://community.cartalk.com/t/undiagnosed-charging-system-problem/114667 "2018-03-29T15:56:55Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Stitchenell](https://avatars.discourse-cdn.com/v4/letter/s/b5ac83/32.png) [@Stitchenell](https://community.cartalk.com/u/Stitchenell)\ **Post date:** [March 29, 2018, 3:56pm UTC](https://community.cartalk.com/t/undiagnosed-charging-system-problem/114667/1 "2018-03-29T15:56:55Z")
My 2010 Pontiac G6 GT Sedan has some sort of problem in the charging system. Sometimes it won’t start & sometimes the warning lights all come on & the gauges flatline. Then after it’s turned off, it won’t restart without resetting the ECU Any ideas? ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [March 30, 2018, 12:11am UTC](https://community.cartalk.com/t/undiagnosed-charging-system-problem/114667/2 "2018-03-30T00:11:16Z")
Yes, next time you get codes, get them read, many chain auto parts stores will read the code for free. Find out what is wrong. ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [March 30, 2018, 12:48am UTC](https://community.cartalk.com/t/undiagnosed-charging-system-problem/114667/3 "2018-03-30T00:48:55Z")
There was a recall involving the PCM I believe. I think all they did was clean the connector and use dielectric grease on it but I think if it was bad can cause all kinds of electrical issues. I don’t remember precisely what the issue was but my '09 was covered and got two free months of Sirius radio by going in. Might want to just check with a dealer on the recalls or take a look at that big connector, check the contacts and use the dielectric grease on them as something to try. ---
**Author:** ![Stitchenell](https://avatars.discourse-cdn.com/v4/letter/s/b5ac83/32.png) [@Stitchenell](https://community.cartalk.com/u/Stitchenell)\ **Post date:** [April 1, 2018, 3:16pm UTC](https://community.cartalk.com/t/undiagnosed-charging-system-problem/114667/4 "2018-04-01T15:16:09Z")
The other day I noticed the clock and a light on the rear view mirror both stay on, even after I take the key out of the switch, until I open and re-close the door. So while listening to the stereo with the key on accessory may not drain the battery, those two things might. I drive very short trips and was listening to the stereo on accessory often ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [April 1, 2018, 5:12pm UTC](https://community.cartalk.com/t/undiagnosed-charging-system-problem/114667/5 "2018-04-01T17:12:22Z")
> [@Stitchenell](#): > > The other day I noticed the clock and a light on the rear view mirror both stay on, even after I take the key out of the switch, until I open and re-close the door. That is actually normal for GM vehicles As long as they DID turn off after you opened and closed the door, everything’s fine . . . as far as that is concerned As for listening to the radio with the engine not running, I suggest you break yourself of that habit, as it can kill your battery, especially if it’s old and marginal