Trans fell out of gear momentarily (4th) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-30-2007, 01:07 AM   #1
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Default Trans fell out of gear momentarily (4th)

Driving on the freeway to work today my trans jumped out of gear momentarily. I was just getting past a slowdown to about 55mph, when I kept accelerating up the slight hill in TCC lockup into 4th.

Around 65mph it felt like i shifted into neutral (I didn't) and then the engine started to rev up, and the warning noise started to chime.

I got off the loud pedal, and the chime stopped and as I got back on, it seemed to be normal.

No CEL/SES was on, I haven't scanned the car yet (i could though soon). After having the trans flush and my other TCC issues occuring directly after that, this has to be related. THe magnets on the trans pan took care of my TCC problem from a dead stop for now, but @ 70 MPH it'* more of a problem, especially if i'm commuting in traffic.

I flipped the high speed fan on for the rest of the day, and it was a non issue @ 75mph the rest of the journey.
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Old 05-30-2007, 07:55 AM   #2
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Sounds like the trans is giving you some warning signs that it'* not long before you'll be replacing or rebuilding.

Any idea which warnings were causing the chimes?
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Old 05-30-2007, 03:06 PM   #3
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Nothing, no lights came on at all. I didn't have time to get to it this morning and I'm working the 2nd shift this afternoon, so Maybe i'll get out the scanner out tomorrow morning and see if any soft codes were set.

But I will take it as a sign that the PCM saw something bad too...
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