After searching through many threads, yes I do think I have the bump from behind problem. But I have some other problems that I haven't found on here yet and don't know if they're related or not.
First, yesterday while driving home from work, doing between 60-65 it happened probably 6-7 times. It feels like the truck lunges forward or something is slipping. There's also like a clunking sound like something is dropping out of place. This has happened before but not nearly as frequent as yesterday.
Second, if I drive at 50 and slow down to 40ish, I will still be in 6th gear and the rpm's are at about 1000. This I can replicate almost anytime I want if there's a slight hill. While driving up a slight hill (and I mean very slight) at 40-42mph in 6th gear, the truck will change gears to 5th and it feels and sounds like the rear diff/drive shaft/tranny is going to drop out. It's a little more than the bump from behind that many seem to have.
So my questions are, should I have the tranny fluid and rear diff looked at be someone other than the dealer? Or could it be the rear diff pin is out of place and I should look into an Auburn diff? I dont really know what's going on here. Any insight would be very helpful.
First, yesterday while driving home from work, doing between 60-65 it happened probably 6-7 times. It feels like the truck lunges forward or something is slipping. There's also like a clunking sound like something is dropping out of place. This has happened before but not nearly as frequent as yesterday.
Second, if I drive at 50 and slow down to 40ish, I will still be in 6th gear and the rpm's are at about 1000. This I can replicate almost anytime I want if there's a slight hill. While driving up a slight hill (and I mean very slight) at 40-42mph in 6th gear, the truck will change gears to 5th and it feels and sounds like the rear diff/drive shaft/tranny is going to drop out. It's a little more than the bump from behind that many seem to have.
So my questions are, should I have the tranny fluid and rear diff looked at be someone other than the dealer? Or could it be the rear diff pin is out of place and I should look into an Auburn diff? I dont really know what's going on here. Any insight would be very helpful.