If you depend on using Iphone while in your truck - DO NOT BUY A SIERRA. It automatically dims the phone volume and when you get out of the truck, you will not hear the phone and miss calls. Also the iPhone contacts will not be called when you use voice commands. This problem ruins a otherwise good truck. GM is aware of problem and makes no effort to fix.
A D V E R T I S E M E N T S
If you depend on using Iphone while in your truck - DO NOT BUY A SIERRA. It automatically dims the phone volume and when you get out of the truck, you will not hear the phone and miss calls. Also the iPhone contacts will not be called when you use voice commands. This problem ruins a otherwise good truck. GM is aware of problem and makes no effort to fix.
- H F., Jonesboro, US