L99/6L80E Issues - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

jame2ss · 10-15-2020, 05:18 PM

hey guys, having some problems with my transmission as of recent. The car is a 2015 2SS with an L99 and the 6l80E. The trans does not want to shift at anything above light throttle all the way through wide open. However, the only time it appears to be an issue, is the 2-3 shift. The car has a set of headers, a catback exhaust, a cold air intake, and a street tune from a local performance shop. I brought the car to the tuner first, and he could not find a problem with the tune, and even after resetting the trans to the stock tune, it was still having the same issue. Any, and I mean any, insight will help. I'm pulling my hair out trying to figure out what could be causing this. Just had the trans flushed as well by the dealer at 55k miles.

RJT Impala · 10-15-2020, 07:11 PM

Was it an issue before the tranny flush?

ariZona28 · 10-15-2020, 07:19 PM

How about when you shift in manual mode with the tap shift? Have you tried different traction control settings? May want to check fluid level also. I'm sure the techs at the dealer filled it properly but you never know.

InFiD3ViL · 10-15-2020, 08:05 PM

I wonder if the tuner tried an adapt reset/relearn. Arizona28 has a good point concerning behavior in Tap Shift mode.

I would be checking fluid levels first off. Dealer service bays are not immune to mistakes.

Inferno dogg · 10-19-2020, 10:06 AM

Mine will slip between 2nd and 3rd on first start up. It will not do it after that until it cools all the way down again.

Moto-Mojo · 10-19-2020, 06:51 PM

I lost a torque converter after a tune. Can’t say if it was related or not. But imo, it was. Never the less, shifts got all jacked up. Hung in gears, NEVER would go into 6th, early, high rpm downshifts, higher rpm upshifts, etc. Finally got the CEL. Had to replace the TC. Dealer job...

2014Cama · 05-13-2021, 10:03 AM

hey guys .Im having trouble with my trans shifting up in M tap mode on its own .

1JEWLDSSRS · 05-13-2021, 02:51 PM

Are you saying it doesn't upshift on it's own in M, tap mode? If so, it is not supposed to till YOU do it.

Moto-Mojo · 05-13-2021, 03:50 PM

^^ This. If not, Are you tuned? Recently?

1JEWLDSSRS · 05-13-2021, 06:51 PM

Guess he didn't really have a problem and figured it out? lol.

2014Cama · 05-14-2021, 07:38 AM

morning peeps. Yes ,stage 2 cam . cold air intake .kooks headers ,Borla Exhaust .
tuned by CJ tunes .
Set in Manual mode . Ill tap shift up the gears . most often . Tap into 3 rd . on its own . will go to fourth, right away . sometimes 4th to fifth. no engine lights, more often at higher speeds, does not hit the limiter.

2014Cama · 05-14-2021, 07:40 AM

took it to the shop that put the tune in. and installed the cam .Excellent shop known around the metro for his good work .
Do you think he could get it to up shift .... not

Moto-Mojo · 05-14-2021, 07:50 AM

Again, as strange as a torque converter sounds for creating tap and auto shift issues, that’s what mine was. It took quite a while for the CEL to light. Right after a tune!

2014Cama · 05-14-2021, 08:22 AM

Very strange . I was thinking it was the switch itself . I would have thought The Tuner/ mech. Would have figured that out . Still at the shop , Im telling him to keep it until it up shifts on him . Like have a horse with three legs .

10-15-2020, 05:18 PM	#1
jame2ss Drives: 2015 Chevrolet Camaro 2SS Join Date: Aug 2019 Location: Louisiana Posts: 5	L99/6L80E Issues hey guys, having some problems with my transmission as of recent. The car is a 2015 2SS with an L99 and the 6l80E. The trans does not want to shift at anything above light throttle all the way through wide open. However, the only time it appears to be an issue, is the 2-3 shift. The car has a set of headers, a catback exhaust, a cold air intake, and a street tune from a local performance shop. I brought the car to the tuner first, and he could not find a problem with the tune, and even after resetting the trans to the stock tune, it was still having the same issue. Any, and I mean any, insight will help. I'm pulling my hair out trying to figure out what could be causing this. Just had the trans flushed as well by the dealer at 55k miles.

10-15-2020, 07:19 PM	#3
ariZona28 Give speed a chance Drives: 2015 Camaro 2LS, 2015 Camaro Z/28 Join Date: Nov 2019 Location: Mesa, Az Posts: 2,233	How about when you shift in manual mode with the tap shift? Have you tried different traction control settings? May want to check fluid level also. I'm sure the techs at the dealer filled it properly but you never know. __________________ 2LS: a TREMENDOUS machine. Z/28: it's a BIT MORE POWERFUL, of course.

10-15-2020, 08:05 PM	#4
InFiD3ViL Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016 Location: Spring Hill, FL Posts: 4,575	I wonder if the tuner tried an adapt reset/relearn. Arizona28 has a good point concerning behavior in Tap Shift mode. I would be checking fluid levels first off. Dealer service bays are not immune to mistakes. __________________ 2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI

10-19-2020, 10:06 AM	#5
Inferno dogg Drives: 2010 Camaro 2SS Join Date: Mar 2018 Location: Michigan Posts: 157	Mine will slip between 2nd and 3rd on first start up. It will not do it after that until it cools all the way down again. __________________ GPI SS3 cam with top end goodies,Circle D 4c 3800 w/Derale trans cooler kit sold by GPI,3.90 yukon gears,Kooks long tube headers,Roto fab cold air intake, Corsa extreme 3" cat back, Dyno tuned by Andrews Auto Georgetown MI, Heritage Grille, T4 splitter with under tray, Anvil spoiler,MRR 228 reps with Nitto NT555G2 tires 315 rear 275 fronts,BMR poly bushings,HD Diff cover from RDP,Raytech install kit

10-19-2020, 06:51 PM	#6
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,973	I lost a torque converter after a tune. Can’t say if it was related or not. But imo, it was. Never the less, shifts got all jacked up. Hung in gears, NEVER would go into 6th, early, high rpm downshifts, higher rpm upshifts, etc. Finally got the CEL. Had to replace the TC. Dealer job... __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

10-15-2020, 07:11 PM	#2
RJT Impala Stovebolt BluFlame 6 Drives: '12 2LT/RS, IBM; '20 Traverse Prem Join Date: Oct 2011 Location: Wherever! Posts: 893 View My Garage	Was it an issue before the tranny flush?

05-13-2021, 10:03 AM	#7
2014Cama Drives: 2014 Camaro SS / 2SS Join Date: May 2021 Location: Minnesota Posts: 4	hey guys .Im having trouble with my trans shifting up in M tap mode on its own .

05-13-2021, 02:51 PM	#8
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 11,435	Are you saying it doesn't upshift on it's own in M, tap mode? If so, it is not supposed to till YOU do it. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

05-13-2021, 03:50 PM	#9
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,973	^^ This. If not, Are you tuned? Recently? __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

05-13-2021, 06:51 PM	#10
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 11,435	Guess he didn't really have a problem and figured it out? lol. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

05-14-2021, 07:38 AM	#11
2014Cama Drives: 2014 Camaro SS / 2SS Join Date: May 2021 Location: Minnesota Posts: 4	morning peeps. Yes ,stage 2 cam . cold air intake .kooks headers ,Borla Exhaust . tuned by CJ tunes . Set in Manual mode . Ill tap shift up the gears . most often . Tap into 3 rd . on its own . will go to fourth, right away . sometimes 4th to fifth. no engine lights, more often at higher speeds, does not hit the limiter.

05-14-2021, 07:40 AM	#12
2014Cama Drives: 2014 Camaro SS / 2SS Join Date: May 2021 Location: Minnesota Posts: 4	took it to the shop that put the tune in. and installed the cam .Excellent shop known around the metro for his good work . Do you think he could get it to up shift .... not

05-14-2021, 07:50 AM	#13
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,973	Again, as strange as a torque converter sounds for creating tap and auto shift issues, that’s what mine was. It took quite a while for the CEL to light. Right after a tune! __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

05-14-2021, 08:22 AM	#14
2014Cama Drives: 2014 Camaro SS / 2SS Join Date: May 2021 Location: Minnesota Posts: 4	Very strange . I was thinking it was the switch itself . I would have thought The Tuner/ mech. Would have figured that out . Still at the shop , Im telling him to keep it until it up shifts on him . Like have a horse with three legs .