Check engine light came on the other day. Plugged in the tuner and it said i have bad glow plug (number six). An independant diesel shop near me said they would fix it for $115 P&L, or because i still have a few months on the warranty left, i could take it to the dealer, but they want a $100 deductible so cost wise it's sort of a wash. How hard are these things to change? I'm not a mechanic, but i know how to change a light bulb. Any advice?
thanks, as always.