BrokerThis
'22 Denali Dmax
This just happened ..... seems like the trans isn't shifting into gears like it should and running high. Anybody experience?
'22 denali - dmax
'22 denali - dmax
Last edited:
" Reduced acceleration" warning / CEL
- Thread starter BrokerThis
- Start date
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OP
OP
BrokerThis
'22 Denali Dmax
Might need to move this to "engine & drivetrain section" .... here's the pop up when trying to put into neutral
UsualSuspect
Full Access Member
I know someone in a 21, same issue, it went to the dealer yesterday. They were told it's either a transmission solenoid, or the transmission needs to be replaced, they can't get to it for 2 weeks.
OP
OP
BrokerThis
'22 Denali Dmax
I got a call and email out to my service rep at the dealer. I sent him these same pics but haven't gotten a response back yet. Thanks for that insight, hopefully the dealers around here won't be as backed up for 2 weeks if that's the case. Of course I'll keep the thread updated as things progress.
I think the Denali is jealous that I was working on the Trans AM .... and wanted me to give her some love too. Haha
I think the Denali is jealous that I was working on the Trans AM .... and wanted me to give her some love too. Haha
OP
OP
BrokerThis
'22 Denali Dmax
Little update: So on my trip back home after dinner.... the CEL is still on but the transmission seemed to be shifting like normal, and when putting into neutral that service message doesn't pop up.
Still concerned, and need the dealer to diagnois the CEL and whatever else... kinda sorta want the transmission to go back into the mode it was when this happened when getting to the dealer and leaving the rig running so they experience it first hand.
Still concerned, and need the dealer to diagnois the CEL and whatever else... kinda sorta want the transmission to go back into the mode it was when this happened when getting to the dealer and leaving the rig running so they experience it first hand.
WalleyeMikeIII
Full Access Member
Maybe hit the onstar button and ask for a remote diagnostic? Check the vehicle status on your MyGMC app. Both of these will let you know what codes are posted.
You still need to get it in
You still need to get it in
OP
OP
BrokerThis
'22 Denali Dmax
WalleyeMikeIII
Full Access Member
Don't think so...kind of odd that you can have a Check Engine and a Transmission Message and have not have something popping up in the diagnostics.
OP
OP
BrokerThis
'22 Denali Dmax
Even with rig running app doesn't show. Here is the onstar diagnosis. Waiting on dealer to get back with me still (shocker... I know ....)
OP
OP
BrokerThis
'22 Denali Dmax
Go figure. Dealership tells me to bring it In tomorrow and they got a loaner for me. Start up the rig and CEL is off. Classic.
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