2017 Bolt EV intermittently tripping 120V GFCIs
Hi all — first post here, hoping to tap the collective Bolt brain trust.
Yes, AI written… human checked
I have a 2017 Bolt EV (~52k miles) and started seeing a weird charging issue.
Symptoms:
Edit: it was charging fine for the first month to month and a half of owning it using either charger
Using 120V Level 1 charging, the car will sometimes trip a GFCI outlet
Sometimes it trips immediately when the car begins charging (right after the charging “beep”)
Other times it will charge for hours overnight and then randomly trip the GFCI
I’ve tested with two different EVSEs:
The OEM Chevy portable charger
A Lectron portable charger
I saw similar behavior with both
What I’ve tested so far:
Tried a different GFCI outlet at a hotel → charged fine
Level 2 AC charging works normally (ChargePoint around 5 kW)
DC fast charging works normally
No warning messages from the car
House voltage measured around 124.9V
Things I’ve considered:
Sensitive / nuisance GFCI
Early onboard charger issue (thank you AI for making me think I bought a lemon)
What makes AI think it’s not a major onboard charger failure:
Level 2 AC works normally
DCFC works normally
The issue is intermittent
Has anyone seen similar behavior with a Bolt? If so, what was the actual root cause?