Car pulls to left/right on hit..and other issue

soceur77 · 08-11-2017, 08:20 AM

edit(should not read on hit should read from roll) I thought it was in my head at first , but my Z def pulls mostly to the left, but sometimes to the right when i floor it from a roll (about 45-50mph and below). Also on aggressive braking, I find the car seems a little unsettled for a sec before Im back at full confidence. Just wandering if anyone else have felt this, and if there is a fix for the first issue, and if the DSC solution would cure the latter issue?

Thanks!

CarFlow1 · 08-11-2017, 09:31 AM

hmm...I think I've noticed this myself, even took it to the dealer for an alignment.

Sub · 08-11-2017, 09:40 AM

wide tires = trammeling. Its just something you get used to.

Ray_Dogg · 08-11-2017, 09:40 AM

There have been a trio of issues guys have experienced and gotten fixed. This is all off the top of my head but will require a search.
One is wiring harness to steering coming loose or shorting. Gives steering loss and is an oh shit on the track.
Second was sway bars or something? Under-tightened at the factory. Causes car to be unstable and loose.
Third is the low speed clicking sound. Forgot what that was.

These should all be stickied in one thread with the solutions. JMHO.

Jmueller · 08-11-2017, 10:25 AM

If you’re experiencing a “swaying” feeling at full throttle, I have that feeling as well. It is not a traction issue. Also wondering if it’s related to the sway bars.

soceur77 · 08-11-2017, 11:02 AM

Quote:

Originally Posted by Jmueller

If you’re experiencing a “swaying” feeling at full throttle, I have that feeling as well. It is not a traction issue. Also wondering if it’s related to the sway bars.

Yea I could label it a swaying motion at times, the other times its like an deliberate jerk however slight to the left of right....def not loss of traction.

thompstl1 · 08-11-2017, 11:08 AM

Quote:

Originally Posted by Jmueller

If you’re experiencing a “swaying” feeling at full throttle, I have that feeling as well. It is not a traction issue. Also wondering if it’s related to the sway bars.

I've experienced that too and have mentioned it several times in different posts.

The issues concerns me with regard to participating in the Texas Mile later this year where I'll be in the 170 mph range.

Naturday13 · 08-11-2017, 12:05 PM

I've felt it under hard acceleration....I just thought it was the car fighting for traction on the tail end.

Tr6 · 08-11-2017, 12:20 PM

A couple of things when it comes to this deal. It could be just 1 thing or a few.

1: It's a 650hp/tq vehicle. It will pull left or/and right when you WoT even from a roll. It just depends how much sway we are talking about.

2: Does it pull on any direction on a straight road and just steady speed (like cruise control on @ 40 mph or highway speeds of 65/70/75)? If it is, most likely alignment issue which can happen even because of transporting the vehicle on a semi or hitting a small pothole. I like testing this on slow speeds, like 30 mph purely because the wind speed at 30 vs 70 is just too much and wind can be a massive factor to pull a vehicle unless you have the wind 100% behind you which is almost impossible lol.

3: Hard braking will cause pulling to either direction, completely normal. When braking, soft, do you feel a shake from the front brakes and/or steering wheel? Could be warped rotors (common issue with c7s even without tracking the car for example, warranty work due to having a brand spanking new vehicle and shouldn't be warping this fast).

4: Check or have checked all toe links, sway bar connections (bushings especially), rotor surfaces with degrees to see if warped or damaged in anyway and they can also check the steering rack for possible movement or damage to eliminate any suspension related deal.

gonabite · 12-20-2018, 07:13 PM

Back to the top with this. Has BMR been able to fix this issue with thier bushing kits? Im wondering if this is suspension deflection. This happens in the Gen 3 CTS Vs. The more power you have the worse it becomes. Something is not right.

bobby35ny · 12-20-2018, 07:43 PM

You need NEW tires, many threads on this. Ask Ted Jannetty about it.

SpeedLimit · 12-20-2018, 07:59 PM

possibly a common problem.... The rear OEM cradle bushing are defective and inadequate on the ZL1. Solution is to upgrade to ZL1 1LE solid rear cradle bushings...

gonabite · 12-20-2018, 08:07 PM

Quote:

Originally Posted by bobby35ny

You need NEW tires, many threads on this. Ask Ted Jannetty about it.

Thats definitely not the problem.

gonabite · 12-20-2018, 08:11 PM

Quote:

Originally Posted by SpeedLimit

It's possible you have a common problem.... The rear OEM cradle bushing are defective and inadequate on the ZL1. Solution is to upgrade to ZL1 1LE solid rear cradle bushings...

This is where Im thinking its coming from between the cradle, rear end and trailing arms Im going with its a bushing issue.

Im going to call BMR tomorrow and see what they have to say. I have never dealt with them and hopefully they have real data and just aren't looking to sell parts.

Its a logical reason that there is too much suspension deflection coming from the stock bushings.

08-11-2017, 08:20 AM	#1
soceur77 Drives: 17 NFG ZL1 17 GTR 22 RS6 Join Date: Apr 2017 Location: Upper Marlboro MD Posts: 625	Car pulls to left/right on hit..and other issue edit(should not read on hit should read from roll) I thought it was in my head at first , but my Z def pulls mostly to the left, but sometimes to the right when i floor it from a roll (about 45-50mph and below). Also on aggressive braking, I find the car seems a little unsettled for a sec before Im back at full confidence. Just wandering if anyone else have felt this, and if there is a fix for the first issue, and if the DSC solution would cure the latter issue? Thanks! Last edited by soceur77; 08-11-2017 at 09:04 AM.

08-11-2017, 09:40 AM	#3
Sub Drives: 2017 ZL1 Join Date: Oct 2016 Location: Ny Posts: 859	wide tires = trammeling. Its just something you get used to. __________________ My Car Blog and mods. Previous Chevys: 2016 2ss, 2015 C7 z51, 2004 C5 Z06

08-11-2017, 09:40 AM	#4
Ray_Dogg Drives: ‘06 GTO(sold), ‘14 Audi S4, ‘17 ZL1 Join Date: Apr 2017 Location: San Francisco Posts: 101	There have been a trio of issues guys have experienced and gotten fixed. This is all off the top of my head but will require a search. One is wiring harness to steering coming loose or shorting. Gives steering loss and is an oh shit on the track. Second was sway bars or something? Under-tightened at the factory. Causes car to be unstable and loose. Third is the low speed clicking sound. Forgot what that was. These should all be stickied in one thread with the solutions. JMHO. __________________ ZL1 Coupe Nightfall Gray Metallic, A10, Carbon Fiber Hood, PDR

08-11-2017, 12:05 PM	#8
Naturday13 Drives: 2017 ZL1 Join Date: Dec 2016 Location: NC Posts: 155	I've felt it under hard acceleration....I just thought it was the car fighting for traction on the tail end. __________________ 2017 Camaro ZL1, M6, summit white

08-11-2017, 12:20 PM	#9
Tr6 The Dogfather Drives: #1 off the line for a customer. '16 Join Date: Oct 2015 Location: Andover, KS Posts: 2,621	A couple of things when it comes to this deal. It could be just 1 thing or a few. 1: It's a 650hp/tq vehicle. It will pull left or/and right when you WoT even from a roll. It just depends how much sway we are talking about. 2: Does it pull on any direction on a straight road and just steady speed (like cruise control on @ 40 mph or highway speeds of 65/70/75)? If it is, most likely alignment issue which can happen even because of transporting the vehicle on a semi or hitting a small pothole. I like testing this on slow speeds, like 30 mph purely because the wind speed at 30 vs 70 is just too much and wind can be a massive factor to pull a vehicle unless you have the wind 100% behind you which is almost impossible lol. 3: Hard braking will cause pulling to either direction, completely normal. When braking, soft, do you feel a shake from the front brakes and/or steering wheel? Could be warped rotors (common issue with c7s even without tracking the car for example, warranty work due to having a brand spanking new vehicle and shouldn't be warping this fast). 4: Check or have checked all toe links, sway bar connections (bushings especially), rotor surfaces with degrees to see if warped or damaged in anyway and they can also check the steering rack for possible movement or damage to eliminate any suspension related deal. __________________ 2SS, Garnet Red with Adrenalin red, NPP, MRC M6 coupe #33 off the line #1 order for Customer. Build thread HERE! Story of my delivery HERE!

08-11-2017, 09:31 AM	#2
CarFlow1 Drives: 2017 ZL1 A10 (Summit White) Join Date: Apr 2017 Location: Detroit,MI Posts: 195	hmm...I think I've noticed this myself, even took it to the dealer for an alignment.

08-11-2017, 10:25 AM	#5
Jmueller Drives: 2017 ZL1 A10 Nightfall Gray Join Date: Jul 2017 Location: Fort Lauderdale Posts: 236	If you’re experiencing a “swaying” feeling at full throttle, I have that feeling as well. It is not a traction issue. Also wondering if it’s related to the sway bars.

12-20-2018, 07:13 PM	#10
gonabite Drives: 2016 CTS V Join Date: Feb 2012 Location: The Drag Strip Posts: 76	Back to the top with this. Has BMR been able to fix this issue with thier bushing kits? Im wondering if this is suspension deflection. This happens in the Gen 3 CTS Vs. The more power you have the worse it becomes. Something is not right.

12-20-2018, 07:43 PM	#11
bobby35ny Drives: 18 ZL1 A10 Join Date: Nov 2008 Location: South East, FL Posts: 3,024	You need NEW tires, many threads on this. Ask Ted Jannetty about it. __________________ 2017 ZL1 M6 Bog City, 2013 ZL1 M6, 2010 2SS M6 ZL1::J-E-T-S JETS JETS JETS

12-20-2018, 07:59 PM	#12
SpeedLimit Drives: 2019 F150 Join Date: Jul 2016 Location: Virginia Posts: 203	possibly a common problem.... The rear OEM cradle bushing are defective and inadequate on the ZL1. Solution is to upgrade to ZL1 1LE solid rear cradle bushings... Last edited by SpeedLimit; 12-20-2018 at 08:10 PM. Reason: grammer

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