[Prplcat]

So my 2010 Camaro just started P008 and P009 codes showing the need for a timing chain. At 125,000 miles. I have a couple questions.
1. I was quoted 1,600 out of my pocket for breakdown of the engine to see if my Waranty company ( Endurance) will cover the Timing chain repair. Does this sound right to you guys? Timing chain is listed in my Waranty book as covered but I was told they will probably challenge the repair. Does 1600 for just the breakdown sound right?
2. I'm getting a p0017 code with the P008 and P009. Does this code usually set because the chain has the timing just off, or is there really an issue with the crank sensor that will requir the engine to be pulled?