On the 2011 silverado 1500 what causes the check engine light to come on simultaneously with the traction control light(and stays on),then the warnings flash first"service traction control", then,"ser

Hook up a professional grade scan tool to the vehicles computers an check for DTC'S diagnostic trouble codes , that will tell a professional mechanic what to check.

Read the codes. The traction controls will stop working when the computer see a drivability problem. Repair the problem and the rest should go away.

Valve timing may be off. Check timing marks. Also check transmission fluid level.

engine light also is for the transmission faults
run the fault codes to find the servo/ solenoid that is not allowing ratio changes

First you need to have EBCM - electronic brake control module check for DTC'S - diagnostic trouble code's . If the light is on there is a code stored . I think most part stores can do this and for free . After you find out what code is stored , looking up that code in service repair information for diagnostic trouble shooting chart would be next step . There are a few codes too.
DTC C0035 or C0040
DTC C0045 or C0050
DTC C0110
DTC C0131
DTC C0161
DTC C0186
DTC C0196
DTC C0201
DTC C0240
DTC C0241 or P0856
DTC C0244 or P1689
DTC C0245
DTC C0283
DTC C0287
DTC C0290 or C0292
DTC C0455
DTC C0550
DTC C0558

Find the code do the diagnostic's , fix the problem , wiring issue's , a sensor , bad module ,what ever it is . The light will go out then . Here is a sample of code discription .
• DTC C0035 Left Front Wheel Speed Sensor Circuit
• DTC C0040 Right Front Wheel Speed Sensor Circuit

PDF]2011 Chevrolet Impala Owner Manual

https://www.chevrolet.com/.../Ownership/Manuals.../2011_Impala... Chevroletyou need to see your owner manual .... inside, pull up or push down on the manual ....The exterior lamps control is located .... The vehicle may have a traction.

[PDF]2015 Chevy Silverado 1500 Owner's Manual - Chevrolet

https://www.chevrolet.com/.../Ownership/Manuals.../2015-silvera... ChevroletJun 20, 2014 - 2015 Chevrolet Silverado Owner Manual M. In Brief . ... Exterior Lighting . .... you need to see your owner manual ... d : Traction Control/StabiliTrak® ..... From inside, use the power door ... The driver window mayhave the.

[PDF]2015 Chevy Traverse Owner's Manual - Chevrolet

https://www.chevrolet.com/.../Ownership/Manuals.../2015-travers... ChevroletMar 27, 2014 - 2015 Chevrolet Traverse Owner Manual M. In Brief . ... Exterior Lighting . .... you need to see your owner manual for additional ... t : Traction Control/StabiliTrak® .... From the inside use the door ..... have buttons located on the.

[PDF]2014 Cadillac ATS Owner Manual

https://www.cadillac.com/.../Owners/Manuals.../2014_ATS_Owners... CadillacCadillac ATS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico- ... Exterior Lighting . .... you need to see your owner manual ... d : Traction Control/StabiliTrak® .... From the inside, to lock a rear ..... The vehicle may also have the Front.

There are a lot of things that can cause this. Get the check engine light test done for free at a local auto parts chain.

you have one of your wheel sensor wires either shorted or a bad sensor.. usually your scan will tell you which one.

For this VCS and traction lights coming ON,its advisable to check/click this help links :----
VCS maintenance required ? http://howtobyme.blogspot.com/2011/11/vcs-maintaince-required-on-toyota-camry.html------- VCS and ABS lights go on and off intermittently? http://howtobyme.blogspot.com/2011/11/vcs-and-abs-lights-go-on-and-off.html
--------Traction control message? http://schematicsdiagram.blogspot.com/2012/01/traction-control-message.html
---------The ABS and Traction Control Lights stays ON dash of car? http://schematicsdiagram.blogspot.com/2011/06/abs-and-traction-control-lights-stays.html
----------This will help.Thanks.

I am gonna suggest that rent a scanner to have an idea what is causing it before do any further.. but if your at the house drinking beer with your friends and wanna just check what maybe causing it well lets start at the speed sensor all your wheel has its sensor for your ABS if one of them is out of spec it can turn off your ABS and traction control i may suggest that record all the reading use Ohm check the reading and compare to each other i cant give you numbers but if one of them is far from each other you just eliminate the problem...