Symptoms of a Bad Transmission Control Module (TCM)

Symptoms of a bad transmission control module (TCM) and how to test if it has gone bad.
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See here for list of scan tools that read transmission codes.
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What is the Transmission Control Module (TCM)?
The TCM uses various sensors to choose the best gear for the vehicle to use at any given time.
When the TCM has a problem, the shifting of the vehicle will also have a problem.
Symptoms of a Bad Transmission Control Module (TCM)
Limp Mode
Hard Shifting
Delayed shifting
Trouble downshifting
Stuck in gear
Not downshifting correctly
Transmission overheating
Shifts unexpectedly
Engine roars loudly and has difficulty shifting
How To Tell if TCM Has Failed?
Read transmission error codes.
Check fuses and relays.
Inspect wiring and TCM module for any damage.
By using this information user assumes all risk of use.

[@resentlesss9475]

My car wont move at all but has all tcm symptoms can a bad tcm cause no moving at all?

[@TheyCallMe_TC]

I also need to know , my car won't even start , just got new fuses and new car battery

[@Sebastian-dx2xg]

I have a 2012 I’m not having those issues. But I’m getting a drained battery. Fuse 14 TCM-BATT has voltage even with key off. I think that is causing my battery to drain. Any ideas?

[@lilzekiel5007]

Alternator

[@LYONHARTPRODUCTION]

Can the TCM be remotely hacked by someone who knows my VIN?
I know from On Star agent that they have a feature to bring a stolen car to complete stop.

[@anthonynicholls8010]

Great video

[@carlalexander4268]

Where is the TCM located on a buick enclave '17 front wheel drive

[@angelamabry6862]

I bought a new TMC how do I program it to my. Chevy HHR

[@junex2133]

Goto your Chevy dealership, they’re the only ones who can.

[@dianehicks9296]

My car is not shooting a code

[@williammitchell1785]

You can't trust these young people that work in these auto parts store don't know how to do

[@justinferguson9779]

What happened to manual ? Dam !

[@anthonynicholls8010]

👍👍

[@rustybullet3165]

I have a problem with TCM. Is it worth to fix and pay money for it? 2008 And how much it will cost to fix this piece of crap

[@junex2133]

2k or more

[@joesphschramm3754]

I've seen them for as low as $140 and up.

[@jaywilliams7531]

My transmission the car is Rise of the little pump the gas pedal for the change gears

[@isy974]

Yup on my g37 but it goes through all the gears but the issue is I end up doing 80 in 6th