service hybrid system
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2009 chevy silverado "service hybrid system"
I have a 2009 chevy hybrid mode 2.
last night the truck ran fine, in the morning it wouldn't start. There is a "Service Hybrid System " indicator light on now. I changed the 12v battery, checked fuses and checked voltage from the hybrid batteries, they total 309v when i checked them. What could be the issue?
last night the truck ran fine, in the morning it wouldn't start. There is a "Service Hybrid System " indicator light on now. I changed the 12v battery, checked fuses and checked voltage from the hybrid batteries, they total 309v when i checked them. What could be the issue?
Last edited by Gilreath; Nov 11, 2020 at 12:33 AM. Reason: change title
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Re: service hybrid system
Do you really think that is the problem? 🤷♂️
If you can't be helpful just stay quiet.
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Joined: Sep 2021
Posts: 38
Re: service hybrid system
you need to use an obd2 scanner and an app to figure out what the issue is but most likely your HV battery is going bad if its just an unbalanced situation doing some conditioning could extend its life but if there is a bad cell (aka blade) it is not going to work and will need
Last edited by sepmaret11; Sep 2, 2025 at 12:59 PM.
Pretty Darn Active Enthusiast
Joined: Mar 2019
Posts: 374
Re: 2009 chevy silverado "service hybrid system"
I have a 2009 chevy hybrid mode 2.
last night the truck ran fine, in the morning it wouldn't start. There is a "Service Hybrid System " indicator light on now. I changed the 12v battery, checked fuses and checked voltage from the hybrid batteries, they total 309v when i checked them. What could be the issue?
last night the truck ran fine, in the morning it wouldn't start. There is a "Service Hybrid System " indicator light on now. I changed the 12v battery, checked fuses and checked voltage from the hybrid batteries, they total 309v when i checked them. What could be the issue?
pull the codes
a cheap OBD2 might be able to get the code from the freeze frame data
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