Driving home today in a heat wave, I noticed my fan kicking on. My truck is totaly stock and has 75000 miles on it. When I got home I popped the hood while the truck was running and noticed little bubbles flowing in my degass bottle, when I shut the truck down the bubbles stopped. Could this be the beginning of head gasket failure or is this normal ?
Yup, sounds like it to me... If it is under the 100k warrenty just bring it in... If it turns out to be gaskets see if you can get ARP studs installed instead. It will be well worth the money...
Did you notice any white smoke out the tail pipe or just the bubbles?