Weak start (2016 SS)

Vyncynt · 06-29-2017, 02:47 PM

Took my 2016 SS to the dealer for weak start analysis. They said they ran a diagnostic on the battery, alternator, and starter, but it diagnosed normal.

After I picked up my car, there was a "Test Report" (receipt paper) on the dash with the diagnostic results. It showed this:

BAC CODE 171600

Diagnostic Mode
Test Info
CCA 700
Out of Vehicle
Flooded

Results
Good Battery
Rated: 700 CCA
Measured: 794 CCA
Measured Volts: 12.42
Amp Hours: 0.0

I read around on the forums and noticed "heat soak". I think that might be a factor because it tends to happen after my car is hot and I restart it.

It did not do this last Summer, but I'm worried that when it hits 100+ degrees this Summer that it might fail and leave me stranded.

Is there a GM bulletin or warranty covered fix for this?

Adrian97c · 06-29-2017, 04:27 PM

I live in FL, I have the weak start daily.

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nancygrl · 06-30-2017, 10:23 AM

With the battery in the trunk would the amount of heat soak really be that much compared to an engine bay? Only askin' as I'm in the south too, haven't had an issue but only had my car 4 months.

bybcous · 06-30-2017, 10:30 AM

Is this only occasional weak start? I have the same problem.

RCF · 06-30-2017, 06:07 PM

Quote:

Originally Posted by nancygrl

With the battery in the trunk would the amount of heat soak really be that much compared to an engine bay? Only askin' as I'm in the south too, haven't had an issue but only had my car 4 months.

Think he's referring to heat soak of the starter.

nancygrl · 07-02-2017, 10:37 AM

Quote:

Originally Posted by RCF

Think he's referring to heat soak of the starter.

Ah, ok...wasn't even thinking of that, lol.

Robert215 · 07-03-2017, 09:55 PM

Same here.. after a good 30 mins of being on when I try to turn it right back on it will sometimes hesitate for even a half second between cranks. Dealer couldn't find anything wrong either

CruzySS · 07-04-2017, 07:45 AM

Noticed it turns over slightly slower than a on a cold start when the motor is hot. I'm not worried about it.

grnflash · 07-04-2017, 09:16 PM

Heat soak and a slow (... like WAY slow) starter are a well-known peculiarity of this car. Lots of people have reported very slow cranking when engine is hot, but no one—to my knowledge—has reported a failure to start. If it actually fails to start, that would be news.

MSboy91 · 07-05-2017, 06:29 AM

Same here people. I wouldn't too much worry about it unless it decides to not start at all.

AdvanSuper · 07-05-2017, 03:27 PM

This happens to me between autocross runs if I turn the car off. I leave it on now because it's a pain in the ass to remember to put it into track mode then comp mode.

soloknight6 · 07-27-2017, 12:46 AM

I have the same issue with my car currently, but I don't believe mine is related to heat soak. Do any of you have an accessory charger plugged in? I notice that when i leave a device plugged in to the accessory charger with the engine off, even for a few minutes, the starter turns wayyyyyyyy slower. Like the charger is sapping power, or the car continues to supply power even while its off. (enough to quickly drain the battery)

I just completed a long drive from los angeles to san diego and back. traffic on the way down, traffic on the way up. engine was definitely warm, but the starter would work fine if i remembered to remove my accessory charger.

2016 2ss btw, 10k miles

Adrian97c · 07-27-2017, 06:35 AM

Quote:

Originally Posted by soloknight6

I have the same issue with my car currently, but I don't believe mine is related to heat soak. Do any of you have an accessory charger plugged in? I notice that when i leave a device plugged in to the accessory charger with the engine off, even for a few minutes, the starter turns wayyyyyyyy slower. Like the charger is sapping power, or the car continues to supply power even while its off. (enough to quickly drain the battery)

I just completed a long drive from los angeles to san diego and back. traffic on the way down, traffic on the way up. engine was definitely warm, but the starter would work fine if i remembered to remove my accessory charger.

2016 2ss btw, 10k miles

The USB charger?

Sent from my iPhone using Tapatalk

Sub · 07-27-2017, 06:51 AM

Normal. One of the car mags even commented on it..

06-29-2017, 02:47 PM	#1
Vyncynt Drives: 2016 Camaro 2SS (on order) Join Date: Mar 2016 Location: Alabama Posts: 330	Weak start (2016 SS) Took my 2016 SS to the dealer for weak start analysis. They said they ran a diagnostic on the battery, alternator, and starter, but it diagnosed normal. After I picked up my car, there was a "Test Report" (receipt paper) on the dash with the diagnostic results. It showed this: BAC CODE 171600 Diagnostic Mode Test Info CCA 700 Out of Vehicle Flooded Results Good Battery Rated: 700 CCA Measured: 794 CCA Measured Volts: 12.42 Amp Hours: 0.0 I read around on the forums and noticed "heat soak". I think that might be a factor because it tends to happen after my car is hot and I restart it. It did not do this last Summer, but I'm worried that when it hits 100+ degrees this Summer that it might fail and leave me stranded. Is there a GM bulletin or warranty covered fix for this? __________________ 2016 Camaro 2SS Garnet Red V8, Dual Exhaust, MRC, Nav, Sunroof, Loaded "Ahhh! Take care to get what you like or you will be forced to like what you get!" - Lyrics from a song from Scooter: "Apache Rock the Bottom!" Previously owned 1998 BMW 540 w/M-series package 1991 Trans Am GTA 1985 Saab 900 Turbo (Burned leaded fuel on the Autobahn) 1985 Firebird (R.I.P.) 1976 Camaro LT

06-29-2017, 04:27 PM	#2
Adrian97c Drives: Wife's 14' IS 250 Join Date: Mar 2014 Location: PSL, FL Posts: 2,207	I live in FL, I have the weak start daily. Sent from my iPhone using Tapatalk __________________ 2016 Camaro HBM A8, 2SS, NPP, Sunroof, Kalahari Interior/kneepads, Black bowties, 56v: -11% tint all around Ordered • 2/06/16 Built on • 3/22/16 Adopted • 4/07/16 Sold on 2/05/16: 2014 Camaro SW L99, 2SS, RS, NAV, Inferno Orange Interior: -Borla ATAK catback -Range AFM delete -15% tint all around -Red LED interior bulbs -55k white Cree LED fogs -License plate LED bulb swap -12" Sub Kit, BA amp swap -Oracle ghosted LED sidemarkers

06-30-2017, 10:23 AM	#3
nancygrl 雪の玉 Drives: '22 Z71 RST Silverado Join Date: Feb 2011 Location: South Posts: 3,415	With the battery in the trunk would the amount of heat soak really be that much compared to an engine bay? Only askin' as I'm in the south too, haven't had an issue but only had my car 4 months. Last edited by nancygrl; 06-30-2017 at 10:34 AM.

06-30-2017, 10:30 AM	#4
bybcous Drives: 2016 Hyper Blue 1SS Join Date: Jul 2015 Location: hampton roads Posts: 2,763	Is this only occasional weak start? I have the same problem. __________________ 1ss/Auto-Hyper Blue acs carbon flash spoiler, bmr springs, gm clear tails. Texas speed cam, 223/227 .635/.635 116 LSA, Kooks Long Tube Headers with green cats, MSD Atomic Air Force Intake, CAI Cold Air Intake, QTP cutouts. 503 hp Best so far 11.5 at 123 with a 1.83 60ft. BMR lower and upper trailing arms and upper control arms,E85 DELIVERED 12/29/15 http://youtube.com/bybcous " no talking only racing on my youtube"

07-04-2017, 09:16 PM	#9
grnflash Drives: Hard Join Date: Feb 2016 Location: Bentonville, AR Posts: 83	Heat soak and a slow (... like WAY slow) starter are a well-known peculiarity of this car. Lots of people have reported very slow cranking when engine is hot, but no one—to my knowledge—has reported a failure to start. If it actually fails to start, that would be news. __________________ '16 2SS, 6MT, MRC, NPP, sways, square 285's—and an ear-to-ear grin!

07-03-2017, 09:55 PM	#7
Robert215 Drives: 2016 hyper blue SS Join Date: Sep 2014 Location: Cape Coral FL Posts: 339	Same here.. after a good 30 mins of being on when I try to turn it right back on it will sometimes hesitate for even a half second between cranks. Dealer couldn't find anything wrong either

07-04-2017, 07:45 AM	#8
CruzySS Drives: 2016 Camaro 2ss Join Date: May 2017 Location: Annandale MN Posts: 588 View My Garage	Noticed it turns over slightly slower than a on a cold start when the motor is hot. I'm not worried about it.

07-05-2017, 06:29 AM	#10
MSboy91 Drives: Hyper Blue Metallic 2016 2SS M6 Join Date: Nov 2013 Location: Ridgeland, MS Posts: 45	Same here people. I wouldn't too much worry about it unless it decides to not start at all.

07-05-2017, 03:27 PM	#11
AdvanSuper Drives: 1SS HBM w/MRC NPP Join Date: Apr 2016 Location: Raleigh, NC Posts: 297	This happens to me between autocross runs if I turn the car off. I leave it on now because it's a pain in the ass to remember to put it into track mode then comp mode.

07-27-2017, 12:46 AM	#12
soloknight6 SoCal HT5! SD Drives: 2016 red hot 2ss M6 Join Date: Nov 2011 Location: San Diego CA, Posts: 1,929	I have the same issue with my car currently, but I don't believe mine is related to heat soak. Do any of you have an accessory charger plugged in? I notice that when i leave a device plugged in to the accessory charger with the engine off, even for a few minutes, the starter turns wayyyyyyyy slower. Like the charger is sapping power, or the car continues to supply power even while its off. (enough to quickly drain the battery) I just completed a long drive from los angeles to san diego and back. traffic on the way down, traffic on the way up. engine was definitely warm, but the starter would work fine if i remembered to remove my accessory charger. 2016 2ss btw, 10k miles __________________ http://www.camaro5.com/forums/showth...37#post5437037 By my deeds, I honor him. V8!!! Last edited by soloknight6; 07-27-2017 at 12:59 AM.

07-27-2017, 06:51 AM	#14
Sub Drives: 2017 ZL1 Join Date: Oct 2016 Location: Ny Posts: 859	Normal. One of the car mags even commented on it.. __________________ My Car Blog and mods. Previous Chevys: 2016 2ss, 2015 C7 z51, 2004 C5 Z06

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