"Shift Denied" From 5-6 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ryan_g.57 · 04-19-2022, 10:44 PM

Hey guys,

New here. I recently bought a 2014 SS with the A6 transmission. After romping around for a while I noticed my trans temp gets close to 210. I'm not sure if this is causing the issue but when I try to tapshift from 5th to 6th in manual mode, it says "shift denied". and it's not because i'm at too low of RPMs, I've tested it at different speeds. Even if I put it back into S mode or D, it will stay in 5th gear, even going 80+mph.
This has happened once before and it was only after I was getting on it for a while and my trans temp went up around 210. I drove to where I was headed. Parked. Got back in it a few hours later and didn't encounter the issue again until just now.
Has anyone else experienced this? Should I be worried?

Thanks in advance.

ryan_g.57 · 04-20-2022, 10:48 AM

*Correction: I think the temp is closer to 250.. I was looking at the gauge and its on the tick mark between 180 and 320

ChibiBlackSheep · 04-20-2022, 10:59 AM

First thing I would do is drop the pan and change fluid and filter, but you might need to get the trans checked by a shop if the car itself isn't shifting.

ryan_g.57 · 04-20-2022, 11:12 AM

Okay, it's strange because it's only happened twice and goes away as soon as it's parked for a little while. Driving to work this morning, it was perfectly fine.

ryan_g.57 · 04-20-2022, 08:54 PM

Also looking into transmission coolers, if anyone has suggestions. The AMD seemed popular but it looks like they don't sell them anymore.

102SS · 04-21-2022, 06:41 AM

When I leave work and get on the HWY/Freeway my car takes a mile or so before it will make the 5-6 shift.

I think the tcm needs to see a certain temp first.

The opposite is probably true as well with high temps and your from AZ.

I would mount a quality after market trans cooler to help with those extreme temps.

Then get a trans flush and fill with some nice new Dex 6

gtstorey · 04-21-2022, 07:50 AM

Tru-Cool, either LPD4921 or LPD4739

http://media.spicerparts.com/cfs/fil...store=original

ryan_g.57 · 04-21-2022, 09:30 AM

Thanks for the help! Any opinions on the Hayden?

JMI · 04-27-2022, 08:11 PM

The TCM has different shift points in Sport and Regular mode also if cruise control is used or not. It also has different shift points at a certain tranny temp. You might reached that temperature limit settings which is denying that shift in question. I don't have my laptop in front of me, but I can check when I have a second.

SaReNi · 04-27-2022, 10:36 PM

Quote:

Originally Posted by gtstorey

Tru-Cool, either LPD4921 or LPD4739

http://media.spicerparts.com/cfs/fil...store=original

whats the difference. how difficult is the install. thanks

gtstorey · 04-28-2022, 07:56 AM

Quote:

Originally Posted by SaReNi

whats the difference. how difficult is the install. thanks

Difference is size/cooling capacity and connection types.

These are not custom for the camaro bolt-ons. You will have to come up with your own mounting and hoses/connections.

This is what I sort of followed for my install. I did cut the barbed ends off and convert it to an lines with a 3/8 to an compression style fitting.
https://www.camaro5.com/forums/showp...0&postcount=65

Larger cooler install
https://www.camaro5.com/forums/showt...light=tru-cool

04-19-2022, 10:44 PM	#1
ryan_g.57 Drives: 2014 2SS Join Date: Apr 2022 Location: Phoenix, AZ Posts: 11	"Shift Denied" From 5-6 Hey guys, New here. I recently bought a 2014 SS with the A6 transmission. After romping around for a while I noticed my trans temp gets close to 210. I'm not sure if this is causing the issue but when I try to tapshift from 5th to 6th in manual mode, it says "shift denied". and it's not because i'm at too low of RPMs, I've tested it at different speeds. Even if I put it back into S mode or D, it will stay in 5th gear, even going 80+mph. This has happened once before and it was only after I was getting on it for a while and my trans temp went up around 210. I drove to where I was headed. Parked. Got back in it a few hours later and didn't encounter the issue again until just now. Has anyone else experienced this? Should I be worried? Thanks in advance.

04-20-2022, 10:59 AM	#3
ChibiBlackSheep Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012 Location: Southeast, PA Posts: 2,093	First thing I would do is drop the pan and change fluid and filter, but you might need to get the trans checked by a shop if the car itself isn't shifting. __________________ LS3 Crate Engine Swap \| CSP Custom Cam 232/240 .615/.615 113 +3 \| Stainless Power LT Headers \| Z28 Intake \| Borla S-Type Exhaust \| FTI Triple-Disc Billet 3200 Stall 2012 Camaro 2SS/RS \| 1968 Camaro SS \| 2020 Cadillac CT5 Premium Luxury \| 2021 Spark LS

04-21-2022, 06:41 AM	#6
102SS waiting at the tree Drives: SIM 2010 2SS/RS A6 Join Date: Apr 2013 Location: Niagara Falls Posts: 3,141	When I leave work and get on the HWY/Freeway my car takes a mile or so before it will make the 5-6 shift. I think the tcm needs to see a certain temp first. The opposite is probably true as well with high temps and your from AZ. I would mount a quality after market trans cooler to help with those extreme temps. Then get a trans flush and fill with some nice new Dex 6 __________________ 2010 2SS/RS A6 ZL1 Rims 60ft 2.03 13.08 at 107.82 (4/28) 2009 Pontiac G8 3.6L the DD

04-27-2022, 08:11 PM	#9
JMI Drives: Red Jewel Camaro SS Join Date: Mar 2014 Location: East Coast Posts: 392	The TCM has different shift points in Sport and Regular mode also if cruise control is used or not. It also has different shift points at a certain tranny temp. You might reached that temperature limit settings which is denying that shift in question. I don't have my laptop in front of me, but I can check when I have a second. __________________ BTR LSX388,AGP Twin Turbo.6L90,GM 9.9" Diff.Fore Innovations Level 4 fuel system.Great fuel economy !!!! 1xxx RWHP

04-20-2022, 10:48 AM	#2
ryan_g.57 Drives: 2014 2SS Join Date: Apr 2022 Location: Phoenix, AZ Posts: 11	*Correction: I think the temp is closer to 250.. I was looking at the gauge and its on the tick mark between 180 and 320

04-20-2022, 11:12 AM	#4
ryan_g.57 Drives: 2014 2SS Join Date: Apr 2022 Location: Phoenix, AZ Posts: 11	Okay, it's strange because it's only happened twice and goes away as soon as it's parked for a little while. Driving to work this morning, it was perfectly fine.

04-20-2022, 08:54 PM	#5
ryan_g.57 Drives: 2014 2SS Join Date: Apr 2022 Location: Phoenix, AZ Posts: 11	Also looking into transmission coolers, if anyone has suggestions. The AMD seemed popular but it looks like they don't sell them anymore.

04-21-2022, 07:50 AM	#7
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,155	Tru-Cool, either LPD4921 or LPD4739 http://media.spicerparts.com/cfs/fil...store=original

04-21-2022, 09:30 AM	#8
ryan_g.57 Drives: 2014 2SS Join Date: Apr 2022 Location: Phoenix, AZ Posts: 11	Thanks for the help! Any opinions on the Hayden?