GM Volt Forum banner
101 - 109 of 109 Posts

·
Registered
2017 Volt LT
Joined
·
424 Posts
I took delivery of my '17 Volt LT on 3/14/2016...so, an early 2017. The BECM called it a day in late January of this year at between 47k and 48k miles. My dealership ordered the module early February of this year. They finally got one in on 4/25. They also swapped out my leaking oil pan, and I got the car back on 4/29. All is well again...
 
  • Like
Reactions: snic and Steverino

·
Registered
‘17 Premium Black
Joined
·
3 Posts
I took delivery of my '17 Volt LT on 3/14/2016...so, an early 2017. The BECM called it a day in late January of this year at between 47k and 48k miles. My dealership ordered the module early February of this year. They finally got one in on 4/25. They also swapped out my leaking oil pan, and I got the car back on 4/29. All is well again...
Good to hear, I would just love it if they could tell me New BECM - 4-6 weeks.
 

·
Registered
Joined
·
1 Posts
Hopefully this isn't a redundant thread but all I could find were threads on 2017 BECM failures.

I'm kind of curious how prevalent 2018 BECM failures are.

Mine occurred at 36,270 miles (300 after BtB warranty expired) and 3 weeks shy of 3 years.

Symptom:
Cruising at 30 mph, engine warning light came on. Battery charge level went from about 60% to 100% charge. Engine started. Shut down car and exited for about 30 minutes.
Upon restart, engine warning indicator remained illuminated (solid, not flashing) and charge indication was normal.
During 20 mile drive to shop, all normal (except engine fault indication).

Finding:
5 fault codes (stored but inactive) indicating BECM. (I didn't get a list of the codes.)
Shop credited the $160 diagnostic fee. Parts available. Be at shop a couple work days.

Questions:
1) The mechanic said that they've seen quite a few BECM failures for all MY gen 2s. Any other 2018 owners out there that have had failed BECMs?
2) Is it normal for a shop to replace (under warranty) an intermittently failed part, or is this just good shop?
3) I assume that the Battery cooling system fluid needs servicing after dropping the battery to replace the BECM. Does anybody know if they would flush it or just burp/service it? Is the BECM on the electronic cooling loop or the battery loop? If the former, same question about flush or service. (Obviously, I would hope for flush so I could zero time those loops.)

Thanks in advance for any feedback. (And moderators, if there are 2018 BECM threads or threads similar to this, please feel free to merge them.)

Regards,
Chris
I just had the dealer say I needed a BECM as my check engine light came on. They are searching for a part but none so far.
 

·
Administrator
Joined
·
22,269 Posts
Seems like more parts came in in April. Perhaps the supply chain is catching up a bit.
 

·
Registered
Joined
·
1 Posts
Thanks CeeW,

I guess we're the only two lucky people (that monitor this site) to have this happen. Maybe that is an indication that it's rare.

I was just getting to the point of not wondering if the car was going to perform properly each time I hit the start button. Now I'm back to thinking about it every day. At least we weren't stranded.

Regards,
Chris
I too have this problem on my 2018, 38k miles. The BECM is on order....3-4 weeks out. That was 9 days ago. Driving normal since, with CE light that goes out after charging. A couple of instances of "unable to Charge", , but able to just a few minutes later. This morning, all of a sudden, trying to shift to Reverse to back out of my garage, "Shift to Park". Will not let me move.
 

·
Administrator
Joined
·
22,269 Posts
I too have this problem on my 2018, 38k miles. The BECM is on order....3-4 weeks out. That was 9 days ago. Driving normal since, with CE light that goes out after charging. A couple of instances of "unable to Charge", , but able to just a few minutes later. This morning, all of a sudden, trying to shift to Reverse to back out of my garage, "Shift to Park". Will not let me move.
There are a number of YouTube videos on DIY fix for the shifter relay issue. One show bending the contact a bit, or replacing the relay, another has a guy cutting some wires!
 
101 - 109 of 109 Posts
Top