Alexandre Dubé

Hello, 
 
I own a 2016 Chevrolet spark 2LT. I live in Canada and I've used chains every winter to reach my cabin on a private road that is not always plowed. 
I've never had any problems with them or any damage done to my car by them. 
 
These are the models I've used:
Peerless Security Chain Company 0152505 Auto-Trac Tire Chains
https://www.amazon.com/dp/B0091RCHNQ/ref=cm_sw_r_cp_awdb_t1_5EyoCbV14Q78Z
 
and:
Peerless Security Chain Company Z-539 Z-Chain
https://www.amazon.com/dp/B001H9IRS0/ref=cm_sw_r_cp_awdb_t1_-ByoCb0C0CAN1
 
I've found that the first set works best on ice, and the second one on snow.
 
I hope this helps, 

Hi! 
I think these might be for unscrewing the tire valve caps? They seem to be the right size and shape. 
 
I don't know why someone would need a tool for that though... 

There's a Technical Service Bulletin for an issue  similar to yours (linked to this post).  Depending on your model year, it might still be covered under warranty.
16-NA-094_Document ID_ 4287507.pdf

Well, these are not pictures, but actual diagrams of the door panels for your 2014 Spark. 
From what I've been able to see, there's really no room at all. 
You also have to be careful, because there's a sensor in the door for the side airbag (refer to #20 on the third picture, you see the sensor location in the door panel on the last picture):
(20) B63LF Side Impact Sensor – Left Front – Located inside the left front door
 
I hope that it might help a bit. 

After a bit of researching, I've found the complete TSBs from GM (linked to this post).
 
@Retired old Gearhead
Also, I've found a lot of technical information about the Jatco CVT7 if you're interested (including the inner workings/ gear ratios and etc).
I've zipped (Transmission.zip) it and linked it to this post also.
Maybe someone more knowledgeable than me can make use of it!
16-NA-107_Document ID_ 4481927.pdf
16-NA-108_Document ID_ 4454099.pdf
16­NA­109_Document ID_ 4484722.pdf
PIP5328A_Document ID_ 4360226.pdf
Transmission.zip

Well, it looks like there's a TSB related to the Powertrain released for the 2016 Spark.
I found it on the NHTSA website: Source linked here
 
Manufacturer Communication No.: PIP5328 
Component(s): POWER TRAIN
NHTSA ID Number: 10075742
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
 
In fact, there are 3 other TSB that have been released related to that car this week (I've check last week and it wasn't there).
For the 2 TSBs related to the MyLink radio, I've experience some of those errors.
 
Manufacturer Communication No.: SB-16-NA-109 
Component(s): STEERING
NHTSA ID Number: 1007843
"THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO INSPECT THE STEERING GEAR FOR A NORMAL CONDITION OF GREASE OR SEALANT ON EXTERIOR CASE OF GEAR DUE TO THE MANUFACTURING PROCESS."
 
Manufacturer Communication No.: SB-16-NA-108 
Component(s): ELECTRICAL SYSTEM , EQUIPMENT
NHTSA ID Number: 10078427
THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE RADIO TO CORRECT A CUSTOMER CONCERN OF BUZZ OR STATIC NOISE FROM RADIO AUDIO SPEAKERS, ANDROID AUTO CONNECTION ISSUES, INTERMITTENT BLACK SCREEN OR SIRIUS XM REVERTS TO XM1 CHANNEL INTERMITTENTLY.
 
Manufacturer Communication No.: SB-16-NA-107 
Component(s): ELECTRICAL SYSTEM
NHTSA ID Number: 10078420
THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE RADIO TO CORRECT A CUSTOMER CONCERN OF RADIO INOPERATIVE, BLUE SCREEN, AM CLIPPING NOISE, HD ON/OFF STATUS NOT RETAINED IN STATIONS, TIME LAG ON TRANSITIONS, NO AUDIO WITH INTERNAL AMP, PARK ASSIST SYMBOL POSITION WRONG IN REAR VIEW CAMERA.

Thanks for the answers!
I'll try to film the issue so I can show my dealer what I mean, because they'll want proof.
I don't know yet if they have a fix for that.
 
I've looked around on the web, and from what I can find the 2016 Spark uses the same transmission model as in the previous years. As you said, The model is Jatco CVT7 JF015E.
 
I've found the product brochure on their website (File attached to my post). From what I can see on the description, I think this problem is related to how the gearbox on the CVT works:
 
"Utilization of the gear for switching between moving forward/reversing as auxiliary gearbox CVTs originally have planetary gears used for switching between moving forward and reversing. Those gears are utilized as an auxiliary gearbox through adding two-step shift transmission elements. On top of the original CVT function of shifting from low gear to high gear, this new function makes it possible to shift  from first speed to second speed while driving.
In order to ensure that the driver does not experience any discomfort by shift shock, the pulley controls shift change to minimize gear ratio variance before and after shifting. This high level of control technologies for carrying out smooth two-step shift change is one of the important advancements CVT with an auxiliary gearbox. JATCO’s high level of control technologies and knowhow cultivated over many years makes this new product possible."
 
So if the pulley is slow to adujst after a hard braking, that might be the reason why there is a loss of power, because the pulley cannot "tell" the gearbox to engage in first gear? I don't know if I understood that right :P
 
Jatco CVT7 - JF015E.pdf