[smggsm]

this sound new to me when push the start and will go away .. on 3rd sec in the video you hear it clearly.. it there is certain fluid movement upon start under the dash ?
http://www.youtube.com/watch?v=J3yKfqe2nMQ&feature=youtu.be

 

[Lormax]

Sounds like low coolant in one of the systems. Check the reservoirs.

 

[smggsm]

thank you.. how many are they,total of 3 ?
they all take same fluid ? what specs?

 

[Lormax]

Yes, 3 total. They all use GM Dexcool.

 

[FISCALI]

i checked them ,,all good only one 3/4 full added some ,, but the sound still there
i didn't use ice much last month 90% electric ..so i start the sport more drove for 30 mile the next day the sound gone back to normal
thanks lormax

 

[smggsm]

mine worked too .. my fluid levels were low
thanks