Tranny "feels" funny lately - Chevy Colorado & GMC Canyon
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post #1 of 7 (permalink) Old 03-19-2017, 08:53 AM Thread Starter
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Tranny "feels" funny lately

Hey all: I own a 2015 Canyon SLT. I have had the tranny updated with the latest PIP (cannot remember the number) about 4 months ago with good results.

So lately I have felt like the transmission has either been slipping or has a dreadful dead spot when shifting into third gear. On inclines, immediately after the 2-3 shift, I can watch the rpms hold constant while my speed increases slightly before the engine drops about 400 rpms. It feels like a slip for 1-2 seconds before a lockup. Also, when this happens there is a big dead spot until about 3000 rpms at which point the engine really comes to life.

The truck is unmodified, e.g. no tuning, pedal commander, etc.. Anyone have a similar experience? Was there a mechanical issue? Should I bring in the truck and have it checked out? Thanks, Chris.

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post #2 of 7 (permalink) Old 03-19-2017, 11:07 AM
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I think I have read of people "clearing the memory" of the transmission by disconnecting the battery for a time. The transmission may have just learned a bad habit over the 4 months since the update. Maybe Someone else can chime in with a more technical answer.

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post #3 of 7 (permalink) Old 03-19-2017, 04:04 PM
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These trucks are tuned like shit from the factory. Get a aftermarket tune and call it a day.

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post #4 of 7 (permalink) Old 03-19-2017, 04:11 PM
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Quote:
Originally Posted by flatblackratrod View Post
I think I have read of people "clearing the memory" of the transmission by disconnecting the battery for a time. The transmission may have just learned a bad habit over the 4 months since the update. Maybe Someone else can chime in with a more technical answer.

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Only a Tech II or tune(r) can clear the TCM trans-adapt cell memory.
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post #5 of 7 (permalink) Old 03-24-2017, 06:21 AM
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Mine 4 cyl 6speed auto no longer is as fun to drive either. Seems like tranny never knows what gear to use.
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post #6 of 7 (permalink) Old 03-24-2017, 06:41 AM
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Quote:
Originally Posted by MoseMan View Post
Hey all: I own a 2015 Canyon SLT. I have had the tranny updated with the latest PIP (cannot remember the number) about 4 months ago with good results.

So lately I have felt like the transmission has either been slipping or has a dreadful dead spot when shifting into third gear. On inclines, immediately after the 2-3 shift, I can watch the rpms hold constant while my speed increases slightly before the engine drops about 400 rpms. It feels like a slip for 1-2 seconds before a lockup. Also, when this happens there is a big dead spot until about 3000 rpms at which point the engine really comes to life.

The truck is unmodified, e.g. no tuning, pedal commander, etc.. Anyone have a similar experience? Was there a mechanical issue? Should I bring in the truck and have it checked out? Thanks, Chris.
Mine always has done the speed up while the rpms hold steady, then rpms drop. I've been in a tuned Colorado that did it. My girlfriend's escape does it too. I think it's normal. I'm always suspicious of anything an automatic transmission does but this is probably just the way it's designed.

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post #7 of 7 (permalink) Old 05-18-2017, 09:47 PM
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Mine has done this since new and always bothers me too. It does feel like a slip which isn't good when that shift is a point you're trying to bring the truck up to speed.
Almost seems like they are locking up the converter.
Would rather have a fast shifting dual clutch trans myself.

8/14/2015 Ordered 2016 Canyon diesel CCSB, SLT, Copper/Red, black interior, Bose, spray in liner, transfer case shield, bars package and block heater.
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