Camaro 2012 SS Automatic Rough Shifting - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

pedrosenedesi · 07-21-2021, 11:00 AM

Hey guys, I have a 2012 Camaro with 15,000 miles on it. (yes, it's a low mileage car). Ever since I got the car in 2014, I've noticed that when the trans shifts from 2-3, it's really a rough shift, you feel like a bobble head. I had a brand new one in 2012 and I don't remember it being like that at all, even on full throttle. The one I have now even with half pedal, it stills feels brutal. And recently, when the car shifts from 2-3, theres an audible CLICK from under the car, even while just cruising. Anybody ever had this? should I be worried, or is it nothing to worry about? Thanks

ChibiBlackSheep · 07-21-2021, 12:47 PM

Do you know the history of the car, is it tuned?

pedrosenedesi · 07-21-2021, 01:15 PM

Quote:

Originally Posted by ChibiBlackSheep

Do you know the history of the car, is it tuned?

Yeah... When I was buying the car, the previous owner said that the car was tuned, ECU and TCU. I asked if he could get the stock tunes back on the car and he said yes, that he was going to do it because he got it tuned less then 30 days ago and that the tuner wasn't going to charge him anything.
When I picked up the car he said that he got it back to stock, but I noticed that something was off in the shifting and I actually went to the shop that he initially tuned. When I asked the manager if he got the car back to stock, he gave me a hard time, I felt like something was off. He just kept saying ''ah you know that we have cars pushing a lot more horsepower with the stock trans with no issues, right? why would your car have a trans issue?''. But he did say that he got it back to stock, not sure if I believe him. Do you think it could be a TCU tune issue? the car feels like its banging gears...

thanks for your time.

ChibiBlackSheep · 07-21-2021, 01:41 PM

Yeah it kind of sounds like there's just increased shift pressures still on the car.

If you want to drop the pan and do a quick filter / fluid swap it's pretty easy and you can at least make sure that the fluid is clean.

redrum_maro · 07-21-2021, 02:47 PM

With the increased pressure on your clutch packs it'll wear them down faster. So the tuner is right in the sense that it wont have issues but the only downside is that clutch packs will have to be replaced sooner. Aside from increased wear from a properly tuned tranny, a badly tuned transmission will dramatically decrease the life of the overall transmission.

When I first had my tranny tuned the 1-2 shift was very aggressive even during parking lot driving. 1-2 shift near full throttle was not possible anymore and 2-3 chirped the oem 275 tire with no performance mods, just a tranny tune. After two years of this tranny tune it was noticeably become mellower/smoother and I think that is from the increased wear from the higher pressures on the clutch packs. As for the click sound, I hear a clamping sound on the 1-2 shift under light throttle I don't know if that would be the same sound you're hearing. If it is, I wouldn't consider it much of a click rather a small thump.

pedrosenedesi · 07-21-2021, 03:37 PM

Thanks guys, I'll go to another tuner to see if they can revert to the stock tune, and I'll ask him about the clicking I hear. If anything happens I will post here again.

morepowerjoe · 07-27-2021, 06:40 AM

Yeah it sounds like increased line pressure to me. If you go to a good tuner he should drive around with you and then he can determine the correct line pressure your looking for.

07-21-2021, 11:00 AM	#1
pedrosenedesi Drives: camaro 2012 ss automatic Join Date: Jul 2021 Location: brazil Posts: 3	Camaro 2012 SS Automatic Rough Shifting Hey guys, I have a 2012 Camaro with 15,000 miles on it. (yes, it's a low mileage car). Ever since I got the car in 2014, I've noticed that when the trans shifts from 2-3, it's really a rough shift, you feel like a bobble head. I had a brand new one in 2012 and I don't remember it being like that at all, even on full throttle. The one I have now even with half pedal, it stills feels brutal. And recently, when the car shifts from 2-3, theres an audible CLICK from under the car, even while just cruising. Anybody ever had this? should I be worried, or is it nothing to worry about? Thanks

07-21-2021, 12:47 PM	#2
ChibiBlackSheep Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012 Location: Southeast, PA Posts: 2,092	Do you know the history of the car, is it tuned? __________________ 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

07-21-2021, 01:41 PM	#4
ChibiBlackSheep Drives: 2012 2SS/RS, 1968 SS Join Date: Feb 2012 Location: Southeast, PA Posts: 2,092	Yeah it kind of sounds like there's just increased shift pressures still on the car. If you want to drop the pan and do a quick filter / fluid swap it's pretty easy and you can at least make sure that the fluid is clean. __________________ 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

07-27-2021, 06:40 AM	#7
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,105	Yeah it sounds like increased line pressure to me. If you go to a good tuner he should drive around with you and then he can determine the correct line pressure your looking for. __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817

07-21-2021, 02:47 PM	#5
redrum_maro Runs on caffeine Drives: 2010 Camaro SS Join Date: Apr 2020 Location: Somewhere driving fast Posts: 120	With the increased pressure on your clutch packs it'll wear them down faster. So the tuner is right in the sense that it wont have issues but the only downside is that clutch packs will have to be replaced sooner. Aside from increased wear from a properly tuned tranny, a badly tuned transmission will dramatically decrease the life of the overall transmission. When I first had my tranny tuned the 1-2 shift was very aggressive even during parking lot driving. 1-2 shift near full throttle was not possible anymore and 2-3 chirped the oem 275 tire with no performance mods, just a tranny tune. After two years of this tranny tune it was noticeably become mellower/smoother and I think that is from the increased wear from the higher pressures on the clutch packs. As for the click sound, I hear a clamping sound on the 1-2 shift under light throttle I don't know if that would be the same sound you're hearing. If it is, I wouldn't consider it much of a click rather a small thump.

07-21-2021, 03:37 PM	#6
pedrosenedesi Drives: camaro 2012 ss automatic Join Date: Jul 2021 Location: brazil Posts: 3	Thanks guys, I'll go to another tuner to see if they can revert to the stock tune, and I'll ask him about the clicking I hear. If anything happens I will post here again.