Load whistling from the back

[JF1957]

Recently i hear a load whistling that seem to came from the back of the truck. Its whistle for about 5 seconds when i start. This was the second time happening and both time only when starting. Hope that isn't the gas pump !

Help please

Thanks

[GMCustomerService]

Unfortunately I primarily specialize in working with customers in the US. I would recommend that you contact GM of Canada at 800-263-3777. The hours of operation are M-F 7:30am - 11:30pm, Sat 7:30am - 6:00 EST. Please feel free to keep me posted or contact me with further questions. Thank you.

 

Tricia, GM Customer Service.