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Old 10-04-2018, 09:27 PM   #71
Calvear0
 
Drives: Currently Looking for 2019 SS
Join Date: Dec 2017
Location: Orange County ,CA
Posts: 223
I have a 2016 ss with 25k miles on it and I have the shudder. My question is, does the dealer cover this under warranty?
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Old 10-04-2018, 10:19 PM   #72
chozn4service


 
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Drives: 2016 SS w/2SS A8 Blue Velvet
Join Date: Dec 2009
Location: 39.793153,-86.238223
Posts: 3,678
Mine was warranty work, including free rental car from dealership


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Old 10-05-2018, 06:00 AM   #73
msowers22
 
Drives: 2018 ZL1 Convertable
Join Date: Sep 2018
Location: Tampa
Posts: 34
#16-NA-175: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at a Steady State - (Sep 4, 2018)
Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at a Steady State



Brand:
Model:
Model Year:
VIN Breakpoint
Engine:
Transmission:
from
to
from
to
Cadillac
GM Passenger Cars and Trucks*
2015
2018
November 1, 2015
EOP
All
8L90 and 8L45 Automatic (RPOs M5U, M5T, M5N, M5X)
Chevrolet
GMC
*Excluding Chevrolet Colorado and GMC Canyon. For Colorado/Canyon, refer to Bulletin 18-NA-177.


Involved Region or Country
North America, N.A. Export Regions and Korea
Condition
Some customers may comment on any of the following conditions:
A shake and/or shudder during light throttle acceleration between 25 and 80 mph (40 and 128 km/h) steady state driving when transmission is not actively shifting gears.
A shudder feeling that may be described as driving over rumble strips or rough pavement.
Shudder feeling is evident in both Drive and M7 MY15-16 & L7 MY17 & MY18 mode.
Diagnosis Instructions
To ensure TCC Shudder is diagnosed correctly, please drive the following schedule on a smooth road with transmission sump temperature between 122°F (50°C) - 158°F (70°C).

Important: For some road conditions, it may be required to apply the brake pedal and throttle simultaneously to stay within desired gear, engine firing mode, engine torque range, and engine/vehicle speed ranges.

For Full Size Trucks/SUVs - Press and hold the tow-haul mode button for 5 seconds to disable grade braking to prevent downshifts during test.

Run the following tests for 3 operational modes:

A. Normal Operation (GDS2 for viewing only).

B. GDS2 Commanding TCC in Disabled Operation. (TCC Open).

C. GDS2 Commanding TCC in Enabled Operation. (TCC Locked).

Test:
Refer to the table below for conditions pertaining to specific applications. In each vehicle, constant throttle input on a smooth grade is desirable. PicoScope Measured Frequency is the approximate vibration frequency where TCC Shudder can be found, discussed in detail below.

Vehicle Information
Shudder Test Conditions
PicoScope
Make
Application:
Engine type
Engine RPO
Trans RPO
Gear
Engine Mode (V4, V6, V8)
Transmission Input Speed (rpm)
Vehicle Speed (mph)
Engine Torque (Nm)
Measured Frequency (+/- 2 Hz)
Cadillac
CTS
6 CYL. NA
LGX
M5N
8
V6
1100-1500
42-55
100-250
23
Cadillac
CTS
4 CYL. Turbo
LTG
M5N
8
V4
1100-1500
42-55
100-250
23
Cadillac
CTS-V
8 CYL. Supercharged
LT4
M5U
8
V8
1000-1500
42-62
200-375
28
Cadillac
ATS
4 CYL. NA
LCV
M5T
8
V4
1100-1500
42-55
100-250
23
Cadillac
ATS
6 CYL. NA
LGX
M5N
8
V6
1100-1500
42-55
100-250
23
Cadillac
ATS
4 CYL. Turbo
LTG
M5N
8
V4
1100-1500
42-55
100-250
23
Cadillac
ATS-V
6 CYL. Twin Turbo
LF4
M5U
8
V6
1100-1500
42-55
150-300
26
Cadillac
CT6
6 CYL. Twin Turbo
LGW
M5X
8
V6
1100-1500
42-55
150-300
26
Cadillac
CT6
6 CYL. NA
LGX
M5N
8
V6
1100-1500
42-55
100-250
23
Cadillac
CT6
4 CYL. Turbo
LTG
M5N
8
V4
1100-1500
42-55
100-250
23
Chevrolet
Camaro
6 CYL. NA
LGX
M5T
8
V6
1100-1500
42-55
100-250
23
Chevrolet
Camaro
4 CYL. Turbo
LTG
M5T
8
V4
1100-1500
42-55
100-250
23
Chevrolet
Camaro SS
8 CYL. NA
LT1
M5U
8
V4/V8
1000-1,500
40-55
(V4) 100-200 /(V8) 175-375
28
Chevrolet
Corvette
8 CYL. NA
LT1
M5U
8
V4 (Eco Driving Mode)
1000-1800
40-80
125-250
28
Chevrolet
Corvette Z06
8 CYL. Supercharged
LT4
M5U
8
V4 (Eco Driving Mode)
1000-1800
40-80
125-250
28
Chevrolet/GMC
Silverado/Sierra
8 CYL. NA
L83
M5U
8
V8
1050-1500
45-55
200-375
26
Chevrolet/GMC
Silverado/Sierra
8 CYL. NA BAS
L8B
M5X
8
V8
1050-1500
45-55
200-375
26
Chevrolet/GMC/Cadillac
Silverado/Sierra/Yukon Denali/Denali XL/Escalade/ESV
8 CYL. NA
L86
M5U
8
V8
1050-1500
45-55
200-375
26
*

To confirm TCC Shudder, the vibration concern must be created in normal operation (Mode A) of the test. If the concern is gone with the torque converter clutch disabled (Mode B, TCC Open) and is gone with torque converter clutch enabled (Mode C, TCC Locked), then the vibration root cause is TCC Shudder, and the fluid flush procedure corrective action described below should be performed.

If the concern is not present in Mode A, then the vibration concern is NOT TCC shudder.

If the concern is still present with the torque converter clutch disabled (Mode B) or with the torque converter clutch enabled (Mode C, TCC slip speed at zero), then the vibration root cause is NOT TCC Shudder.

Vibrations not identified as TCC Shudder should be further investigated using the Vehicle Vibration Diagnosis in SI as a starting point.

Picoscope Test
The PicoScope (CH-51450) essential tool and NVH software can be used to confirm TCC Shudder, Engine, Tire, or Driveline component related conditions.

To confirm TCC Shudder, record the PicoScope data while driving in 8th gear in the application specific condition above. Minimize extraneous vibration input by testing on a smooth road and correct any other known vehicle vibration issues (tires, brakes, etc.) before conducting test. If TCC Shudder is present, a vibration peak will appear (highlighted by arrow below) within +/-2 Hz of the frequency listed in the table above. TCC Shudder vibration frequency is stationary in 8th gear. If the vibration frequency follows vehicle speed or engine speed, then it is NOT TCC Shudder.

Object ID: 4629472Click here for detailed picture of the image.
In the above illustration, frequency and default view have been selected.



Service Procedure
Important: Requires Mobil 1 Synthetic LV ATF DEXRON HP transmission fluid.

Drain, Clean pan/magnet, Replace Filter, Oil Fill, & Remove fluid from the oil cooler lines.
A.) Use filtered compressed air regulated to 60 psi to remove transmission fluid from the transmission oil cooler lines.
B.) Remove the transmission fluid pan and drain transmission fluid following SI procedures for the application you’re working on. Discard all oil.
Note: If you find that the fluid is cloudy, milky, or appears to be contaminated with water or engine coolant, DO NOT proceed with below steps. Follow Both SI Procedures for Cooling System Leak Testing and Engine Coolant/Water in Transmission.
C.) Clean the pan/magnet if any metallic particles present and replace transmission filter.
Install the transmission fluid pan and refill with new Mobil 1 Synthetic LV ATF DEXRON HP transmission fluid following the Fluid Fill Procedure in SI to obtain correct fluid level.

The shudder should be improved after the completion of this flush procedure.

Note: Shudder should improve directionally right away, but for full affect, the vehicle may need to be driven up to 200 miles (322 km) and a minimum of two cold to hot drive cycles before determining if the fluid flush corrected the condition or not. Do not re-evaluate vehicle for additional customer shudder concerns until the vehicle has been driven 200 miles (322 km).

Parts Information
Note: U.S. dealers must order the Mobil 1 Synthetic LV ATF DEXRON HP fluid through your local General Motors oil distributor. When contacting the General Motors oil distributor, request Mobil 1 Synthetic LV ATF DEXRON HP. Canadian dealers must order part number 19355657 through Kem Krest Canada.

Causal Part
Description
Part Number
Qty
N/A*
Mobil 1 Synthetic LV ATF DEXRON HP (Quarts/Liter)
19355656 (U.S.)
12 qts
19355657 (Canada)
11 liters
Transmission Oil Filter
Refer to EPC**
1
*For warranty transactions, DO NOT mark this part as the Casual part. Enter the word “Bulletin” in the Causal Part Description free-flow text field.
**Use the latest part number listed in the EPC with the VIN filter on.
Warranty Information
For vehicles repaired under the Powertrain coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.

Labor Operation
Description
Labor Time
8480478*
Flush and Drain Fluids for Transmission Shake and/or Shudder Repair
Use Actual Clock Time
*This is a unique Labor Operation for Bulletin use only.


Version
12
Modified
June 1, 2016 – Added a breakpoint date.
November 29, 2016 – Added the 2017 Model Year and updated information including graphics under Diagnosis Instructions.
February 27, 2017 – Updated the Model section and added additional information to Test section.
April 18, 2017 – Updated the Shudder Chart information.
August 24, 2017 – Updated information.
September 19, 2017 – Updated the Service Procedure.
October 4, 2017 – Updated VIN breakpoints.
December 1, 2017 – Added the 2018 Model Year and updated Service Procedure sections.
December 14, 2017 – Removed the NOTE statement regarding the use of DEXRON VI to flow and flush transmission cooling system.
June 05, 2018 – Removed Colorado/Canyon Models, added Bulletin reference for Colorado/Canyon to Models section and updated the first Note under Service Procedure regarding Canadian dealer orders.
September 04, 2018 – Added the Parts Information section.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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Old 10-05-2018, 09:01 AM   #74
lokitwitch04
 
Drives: 2017 Camaro SS 2SS
Join Date: Jun 2017
Location: Hamilton, MI
Posts: 191
Quote:
Originally Posted by msowers22 View Post
#16-NA-175: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at a Steady State - (Sep 4, 2018)
Subject: Shake and/or Shudder During Light Throttle Acceleration Between 25 and 80 MPH (40 and 128 KM/H) at a Steady State



Brand:
Model:
Model Year:
VIN Breakpoint
Engine:
Transmission:
from
to
from
to
Cadillac
GM Passenger Cars and Trucks*
2015
2018
November 1, 2015
EOP
All
8L90 and 8L45 Automatic (RPOs M5U, M5T, M5N, M5X)
Chevrolet
GMC
*Excluding Chevrolet Colorado and GMC Canyon. For Colorado/Canyon, refer to Bulletin 18-NA-177.


Involved Region or Country
North America, N.A. Export Regions and Korea
Condition
Some customers may comment on any of the following conditions:
A shake and/or shudder during light throttle acceleration between 25 and 80 mph (40 and 128 km/h) steady state driving when transmission is not actively shifting gears.
A shudder feeling that may be described as driving over rumble strips or rough pavement.
Shudder feeling is evident in both Drive and M7 MY15-16 & L7 MY17 & MY18 mode.
Diagnosis Instructions
To ensure TCC Shudder is diagnosed correctly, please drive the following schedule on a smooth road with transmission sump temperature between 122°F (50°C) - 158°F (70°C).

Important: For some road conditions, it may be required to apply the brake pedal and throttle simultaneously to stay within desired gear, engine firing mode, engine torque range, and engine/vehicle speed ranges.

For Full Size Trucks/SUVs - Press and hold the tow-haul mode button for 5 seconds to disable grade braking to prevent downshifts during test.

Run the following tests for 3 operational modes:

A. Normal Operation (GDS2 for viewing only).

B. GDS2 Commanding TCC in Disabled Operation. (TCC Open).

C. GDS2 Commanding TCC in Enabled Operation. (TCC Locked).

Test:
Refer to the table below for conditions pertaining to specific applications. In each vehicle, constant throttle input on a smooth grade is desirable. PicoScope Measured Frequency is the approximate vibration frequency where TCC Shudder can be found, discussed in detail below.

Vehicle Information
Shudder Test Conditions
PicoScope
Make
Application:
Engine type
Engine RPO
Trans RPO
Gear
Engine Mode (V4, V6, V8)
Transmission Input Speed (rpm)
Vehicle Speed (mph)
Engine Torque (Nm)
Measured Frequency (+/- 2 Hz)
Cadillac
CTS
6 CYL. NA
LGX
M5N
8
V6
1100-1500
42-55
100-250
23
Cadillac
CTS
4 CYL. Turbo
LTG
M5N
8
V4
1100-1500
42-55
100-250
23
Cadillac
CTS-V
8 CYL. Supercharged
LT4
M5U
8
V8
1000-1500
42-62
200-375
28
Cadillac
ATS
4 CYL. NA
LCV
M5T
8
V4
1100-1500
42-55
100-250
23
Cadillac
ATS
6 CYL. NA
LGX
M5N
8
V6
1100-1500
42-55
100-250
23
Cadillac
ATS
4 CYL. Turbo
LTG
M5N
8
V4
1100-1500
42-55
100-250
23
Cadillac
ATS-V
6 CYL. Twin Turbo
LF4
M5U
8
V6
1100-1500
42-55
150-300
26
Cadillac
CT6
6 CYL. Twin Turbo
LGW
M5X
8
V6
1100-1500
42-55
150-300
26
Cadillac
CT6
6 CYL. NA
LGX
M5N
8
V6
1100-1500
42-55
100-250
23
Cadillac
CT6
4 CYL. Turbo
LTG
M5N
8
V4
1100-1500
42-55
100-250
23
Chevrolet
Camaro
6 CYL. NA
LGX
M5T
8
V6
1100-1500
42-55
100-250
23
Chevrolet
Camaro
4 CYL. Turbo
LTG
M5T
8
V4
1100-1500
42-55
100-250
23
Chevrolet
Camaro SS
8 CYL. NA
LT1
M5U
8
V4/V8
1000-1,500
40-55
(V4) 100-200 /(V8) 175-375
28
Chevrolet
Corvette
8 CYL. NA
LT1
M5U
8
V4 (Eco Driving Mode)
1000-1800
40-80
125-250
28
Chevrolet
Corvette Z06
8 CYL. Supercharged
LT4
M5U
8
V4 (Eco Driving Mode)
1000-1800
40-80
125-250
28
Chevrolet/GMC
Silverado/Sierra
8 CYL. NA
L83
M5U
8
V8
1050-1500
45-55
200-375
26
Chevrolet/GMC
Silverado/Sierra
8 CYL. NA BAS
L8B
M5X
8
V8
1050-1500
45-55
200-375
26
Chevrolet/GMC/Cadillac
Silverado/Sierra/Yukon Denali/Denali XL/Escalade/ESV
8 CYL. NA
L86
M5U
8
V8
1050-1500
45-55
200-375
26
*

To confirm TCC Shudder, the vibration concern must be created in normal operation (Mode A) of the test. If the concern is gone with the torque converter clutch disabled (Mode B, TCC Open) and is gone with torque converter clutch enabled (Mode C, TCC Locked), then the vibration root cause is TCC Shudder, and the fluid flush procedure corrective action described below should be performed.

If the concern is not present in Mode A, then the vibration concern is NOT TCC shudder.

If the concern is still present with the torque converter clutch disabled (Mode B) or with the torque converter clutch enabled (Mode C, TCC slip speed at zero), then the vibration root cause is NOT TCC Shudder.

Vibrations not identified as TCC Shudder should be further investigated using the Vehicle Vibration Diagnosis in SI as a starting point.

Picoscope Test
The PicoScope (CH-51450) essential tool and NVH software can be used to confirm TCC Shudder, Engine, Tire, or Driveline component related conditions.

To confirm TCC Shudder, record the PicoScope data while driving in 8th gear in the application specific condition above. Minimize extraneous vibration input by testing on a smooth road and correct any other known vehicle vibration issues (tires, brakes, etc.) before conducting test. If TCC Shudder is present, a vibration peak will appear (highlighted by arrow below) within +/-2 Hz of the frequency listed in the table above. TCC Shudder vibration frequency is stationary in 8th gear. If the vibration frequency follows vehicle speed or engine speed, then it is NOT TCC Shudder.

Object ID: 4629472Click here for detailed picture of the image.
In the above illustration, frequency and default view have been selected.



Service Procedure
Important: Requires Mobil 1 Synthetic LV ATF DEXRON HP transmission fluid.

Drain, Clean pan/magnet, Replace Filter, Oil Fill, & Remove fluid from the oil cooler lines.
A.) Use filtered compressed air regulated to 60 psi to remove transmission fluid from the transmission oil cooler lines.
B.) Remove the transmission fluid pan and drain transmission fluid following SI procedures for the application you’re working on. Discard all oil.
Note: If you find that the fluid is cloudy, milky, or appears to be contaminated with water or engine coolant, DO NOT proceed with below steps. Follow Both SI Procedures for Cooling System Leak Testing and Engine Coolant/Water in Transmission.
C.) Clean the pan/magnet if any metallic particles present and replace transmission filter.
Install the transmission fluid pan and refill with new Mobil 1 Synthetic LV ATF DEXRON HP transmission fluid following the Fluid Fill Procedure in SI to obtain correct fluid level.

The shudder should be improved after the completion of this flush procedure.

Note: Shudder should improve directionally right away, but for full affect, the vehicle may need to be driven up to 200 miles (322 km) and a minimum of two cold to hot drive cycles before determining if the fluid flush corrected the condition or not. Do not re-evaluate vehicle for additional customer shudder concerns until the vehicle has been driven 200 miles (322 km).

Parts Information
Note: U.S. dealers must order the Mobil 1 Synthetic LV ATF DEXRON HP fluid through your local General Motors oil distributor. When contacting the General Motors oil distributor, request Mobil 1 Synthetic LV ATF DEXRON HP. Canadian dealers must order part number 19355657 through Kem Krest Canada.

Causal Part
Description
Part Number
Qty
N/A*
Mobil 1 Synthetic LV ATF DEXRON HP (Quarts/Liter)
19355656 (U.S.)
12 qts
19355657 (Canada)
11 liters
Transmission Oil Filter
Refer to EPC**
1
*For warranty transactions, DO NOT mark this part as the Casual part. Enter the word “Bulletin” in the Causal Part Description free-flow text field.
**Use the latest part number listed in the EPC with the VIN filter on.
Warranty Information
For vehicles repaired under the Powertrain coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.

Labor Operation
Description
Labor Time
8480478*
Flush and Drain Fluids for Transmission Shake and/or Shudder Repair
Use Actual Clock Time
*This is a unique Labor Operation for Bulletin use only.


Version
12
Modified
June 1, 2016 – Added a breakpoint date.
November 29, 2016 – Added the 2017 Model Year and updated information including graphics under Diagnosis Instructions.
February 27, 2017 – Updated the Model section and added additional information to Test section.
April 18, 2017 – Updated the Shudder Chart information.
August 24, 2017 – Updated information.
September 19, 2017 – Updated the Service Procedure.
October 4, 2017 – Updated VIN breakpoints.
December 1, 2017 – Added the 2018 Model Year and updated Service Procedure sections.
December 14, 2017 – Removed the NOTE statement regarding the use of DEXRON VI to flow and flush transmission cooling system.
June 05, 2018 – Removed Colorado/Canyon Models, added Bulletin reference for Colorado/Canyon to Models section and updated the first Note under Service Procedure regarding Canadian dealer orders.
September 04, 2018 – Added the Parts Information section.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
So when they are doing the flush they are only flushing the trans? I thought they were pulling the trans out of the car and flushing the TC.
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Old 10-05-2018, 09:37 AM   #75
SSport16


 
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Drives: 2016 Garnet Red Camaro 2SS
Join Date: Jul 2015
Location: North Carolina
Posts: 5,435
So in other words, the above is what their supposed "fix" has been since day 1. Mine needs to go in, but I am indecisive at this point. Do I bring it in and get a Band-Aid fix, or do I wait to a real fix is in place (which probably will never come)? I will not keep the car if there is no real fix, because I lost of ton of enthusiasm driving my car now and it sucks, such a great car but poor application of the A8 in the Camaro and poor response to have these issues resolved by GM! Come on GM, give us something that will fix this.
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3800 Status - 10/13/15 (Built)
6000 Status - 12/22/15 (Delivered)
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Old 10-05-2018, 10:53 AM   #76
tom's2005gto
 
Drives: 2016 2SS A8 Convertible
Join Date: Aug 2010
Location: Nashville, TN.
Posts: 194
I'm to the point of buying a $1300 aftermarket converter, and finding the right place to install, but key is the ability to flush the lines and cooler.
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Old 10-05-2018, 06:38 PM   #77
crosive

 
Drives: 18 zl1
Join Date: Aug 2017
Location: central alabama
Posts: 935
Quote:
Originally Posted by tom's2005gto View Post
I'm to the point of buying a $1300 aftermarket converter, and finding the right place to install, but key is the ability to flush the lines and cooler.
If you are paying someone to do it, then figure 1300 for TC. Maybe 400 for install if you're lucky. 200 to unlock tcm if you're 2017+. 400 for software and credits, if *you* tune it. Prolly 4-500 if you don't.
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Old 10-05-2018, 06:45 PM   #78
msowers22
 
Drives: 2018 ZL1 Convertable
Join Date: Sep 2018
Location: Tampa
Posts: 34
Get it done. It fixes most of the cars
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Old 10-05-2018, 06:48 PM   #79
msowers22
 
Drives: 2018 ZL1 Convertable
Join Date: Sep 2018
Location: Tampa
Posts: 34
If it continues to do it after 200 miles they will put a replacement parts or trans in it.

Note: Shudder should improve directionally right away, but for full affect, the vehicle may need to be driven up to 200 miles (322 km) and a minimum of two cold to hot drive cycles before determining if the fluid flush corrected the condition or not. Do not re-evaluate vehicle for additional customer shudder concerns until the vehicle has been driven 200 miles (322 km).
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Old 10-05-2018, 07:38 PM   #80
blpadge2
 
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Drives: 2016 Camaro Convertible 2SS
Join Date: Nov 2016
Location: Gastonia, NC
Posts: 102
Just had the tonneau cover break for the 2nd time in 2 years. Guess I'll demand they check it for shudder too while it is in the shop.
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Old 10-05-2018, 07:41 PM   #81
tom's2005gto
 
Drives: 2016 2SS A8 Convertible
Join Date: Aug 2010
Location: Nashville, TN.
Posts: 194
Quote:
Originally Posted by crosive View Post
If you are paying someone to do it, then figure 1300 for TC. Maybe 400 for install if you're lucky. 200 to unlock tcm if you're 2017+. 400 for software and credits, if *you* tune it. Prolly 4-500 if you don't.
Have already been tuning it (engine and trans) with HPT. Converter and fluid is $1400. Ordered filter and pan gasket $58

Have been quoted $520 for install.
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Old 10-05-2018, 08:35 PM   #82
70chevelleSS
 
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Drives: 2017 Camaro SS 1970 chevelle SS
Join Date: Oct 2016
Location: Florida
Posts: 231
Quote:
Originally Posted by tom's2005gto View Post
I'm to the point of buying a $1300 aftermarket converter, and finding the right place to install, but key is the ability to flush the lines and cooler.


Looks like you and I are in the same boat at this point. Tuned and with an obviously voided warranty with a toasted converter.


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FBO With all porting and tuning done by PRAY
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Old 10-05-2018, 10:12 PM   #83
EMTNLSS
 
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Drives: 2016 Hyper Blue 2SS
Join Date: Feb 2016
Location: Layton, UT
Posts: 498
I'm in the same boat as you 2 also. I didn't notice any shuddering before I got it tuned but I faintly start to feel it now so it's probably toast.
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Old 10-09-2018, 07:40 PM   #84
Gettingood
2016 2SS NPP MRC Glowtie
 
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Drives: 2016 Hyper Blue 2SS
Join Date: Jul 2015
Location: Buffalo NY
Posts: 31
Purchased my car in Feb of 2016. I had the triple flush at 15000 mi The first TC at 20000 mi and the second TC at 21500 mi. The triple flush helped for about 3000 mi and then the shudder came back and became steadily worse. The First TC lessened the shudder but it did it on the way home from the dealer. Within 1000 mi it was like driving over a wash board on a daily basis. The 2nd TC took 2 days to start shuddering again. New rebuilt transmission installed and car bucks and sputters. I spent $48,000 on this car and have not enjoyed driving a mile in over a year!
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