A8 shudder, fluid flush

sinlinson · 08-03-2022, 08:47 AM

Brought my new to me, SS to the local dealer for the dreaded A8 tranny shudder. The car drives fine at highway speed, but shudders around 20-35 mph. I printed the service bulletin (which I know they love to see), and spoke with the service manager. She said it may be covered under my certified used car warranty, but wasn't sure. Which means it's not covered. Said it would be $695 for the fluid flush if I had to pay. Got a call at the end of the day saying they didn't do the flush because 3 of my wheels are bent. I know anything is possible, but how could I have 3 bent rims and the car drive perfectly at 80 mph? They want $160/ wheel to straighten, then they will diagnose the transmission. Sound reasonable? I took the car home untouched.

KingLT1 · 08-03-2022, 09:11 AM

I would take it somewhere else. Even if the wheels were slightly bent, it wouldn't replicate trans shudder between 20-35mph. And the trans flush price sounds about double of what it should be.

arpad_m · 08-03-2022, 10:46 AM

OP, now you have to scrape the answers together from multiple threads (sigh).

Chutzpah · 08-03-2022, 11:42 PM

Could be wrong, but sounds like a bait and switch on the wheel repair. I mean seriously, how would you know if they did anything at all to repair them? I agree that you’d feel a vibration at higher speeds with bent wheels.

As far as the low speed vibration: When the car is in V4 mode, at the speed you reference, there’s a mild vibration that’s considered “normal”. Not sure if that’s what you’re feeling or not, but it annoys the crap out of me.

You could try a Range device to eliminate the V4 mode altogether (about $225) That’s what I’ve done (as have others).

WillyZ83 · 08-04-2022, 07:31 AM

Is it possible the afm is kicking in? Just an idea to consider

Flyer · 10-08-2022, 01:38 PM

Price issues aside... Do the TSB as preventative maintenance anyway.

Spaceme1117 · 10-08-2022, 02:38 PM

Quote:

Originally Posted by sinlinson

Brought my new to me, SS to the local dealer for the dreaded A8 tranny shudder. The car drives fine at highway speed, but shudders around 20-35 mph. I printed the service bulletin (which I know they love to see), and spoke with the service manager. She said it may be covered under my certified used car warranty, but wasn't sure. Which means it's not covered. Said it would be $695 for the fluid flush if I had to pay. Got a call at the end of the day saying they didn't do the flush because 3 of my wheels are bent. I know anything is possible, but how could I have 3 bent rims and the car drive perfectly at 80 mph? They want $160/ wheel to straighten, then they will diagnose the transmission. Sound reasonable? I took the car home untouched.

Go to another dealership and see what they say. Do not say anything about the previous dealership or their diagnosis.

Seems a bit suspicious to me.

NewCamaroOrder · 11-23-2022, 12:31 PM

I just took my 2017 2SS into my local dealership here in SoCal and they said if it wasn't covered under warranty it would cost $850. They stated they still do the triple flush and the transmission takes 20 liters of fluid.

I took the car home.

08-03-2022, 08:47 AM	#1
sinlinson 2016 2SS Convertible Drives: 2011 Camaro 2SS convertible Join Date: May 2019 Location: NY Posts: 85 View My Garage	A8 shudder, fluid flush Brought my new to me, SS to the local dealer for the dreaded A8 tranny shudder. The car drives fine at highway speed, but shudders around 20-35 mph. I printed the service bulletin (which I know they love to see), and spoke with the service manager. She said it may be covered under my certified used car warranty, but wasn't sure. Which means it's not covered. Said it would be $695 for the fluid flush if I had to pay. Got a call at the end of the day saying they didn't do the flush because 3 of my wheels are bent. I know anything is possible, but how could I have 3 bent rims and the car drive perfectly at 80 mph? They want $160/ wheel to straighten, then they will diagnose the transmission. Sound reasonable? I took the car home untouched. Last edited by sinlinson; 08-22-2022 at 01:45 PM.

08-03-2022, 09:11 AM	#2
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,797	I would take it somewhere else. Even if the wheels were slightly bent, it wouldn't replicate trans shudder between 20-35mph. And the trans flush price sounds about double of what it should be. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

08-03-2022, 10:46 AM	#3
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,602 View My Garage	OP, now you have to scrape the answers together from multiple threads (sigh). __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18

08-04-2022, 07:31 AM	#5
WillyZ83 Drives: 18 zl1 garnet red Join Date: Aug 2021 Location: TX Posts: 287	Is it possible the afm is kicking in? Just an idea to consider __________________ IG - @zl1_will 2022 zl1 740hp / 730tq stolen 2018 zl1 Maggie - 2" headers - flex fuel - lowside fuel ssytem - +30 injectors - cordes ice tank - spl rear linkage arms

10-08-2022, 01:38 PM	#6
Flyer Drives: 2016 Camaro SS and an old Lexus SUV Join Date: May 2015 Location: Hawaii Posts: 81	Do the TSB anyway Price issues aside... Do the TSB as preventative maintenance anyway. __________________

08-03-2022, 11:42 PM	#4
Chutzpah Drives: Wild Cherry LT1 Join Date: Dec 2016 Location: Massachusetts Posts: 1,925	Could be wrong, but sounds like a bait and switch on the wheel repair. I mean seriously, how would you know if they did anything at all to repair them? I agree that you’d feel a vibration at higher speeds with bent wheels. As far as the low speed vibration: When the car is in V4 mode, at the speed you reference, there’s a mild vibration that’s considered “normal”. Not sure if that’s what you’re feeling or not, but it annoys the crap out of me. You could try a Range device to eliminate the V4 mode altogether (about $225) That’s what I’ve done (as have others).

11-23-2022, 12:31 PM	#8
NewCamaroOrder Drives: 2017 Camaro 2SS Nightfall Gray 1LE Join Date: Mar 2017 Location: SoCal Posts: 86	I just took my 2017 2SS into my local dealership here in SoCal and they said if it wasn't covered under warranty it would cost $850. They stated they still do the triple flush and the transmission takes 20 liters of fluid. I took the car home.

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