Colossus

your right, they don't know anything

I pulled into a parking spot at Best Buy and bumped into the front of a beautiful pearl white GMC Sierra 2500HD Duramax Denali. The driver was sitting in his truck. I got out immediatly apologized to him and asked him to give it a look over and let me know if he finds any damage on his truck. He was satisfied that there was no damage (had a bull bar) but pointed out a nice scratch on the front plastic bumper of my Impala but told him I don't care. It's just your basic rental car. We talked for a moment about his truck, told him about my old D-Max, shook his hand, apologized again and he said all was cool. I was very ashamed for having bumped into it but am grateful he was nice about it.

What I mean by the sending unit is the whole module in the fuel tank. The sending unit (aka the pump) the float (fuel level) and filter (if it does not have an external fuel filter, it is in the tank) Replace the whole thing which would be all those things. In the GMT-800s, they were known to go out between 60,000-100,000 miles, and the ones they were replaced with would last just about as long. However, when the pump goes out, it won't always just suddenly go bad. Sometimes it does, but most of the time it will give you a hard starting symptom like you were describing. I had an old 99 GMT-800 that more or less did what yours is doing. I would have to turn it to the on position for a few seconds to prime the pump, then turn it off, then back to on position a few seconds, then off, then on again, then turn to start, and it would start. But even that only worked for awhile before it got worse and I had to have it replaced. The FPR (fuel pressure regulator) were also very prone to leaking and failures on the GMT-800s too.

Fuel pumps don't always just die. The symptoms you are explaining leads me to believe 1 of 2 things. The fuel sending unit, and/or the fuel pressure regulator.

My trusty side-kick Daisy Another one of Ms. Daisy This is Mollie. My beautiful and awesome Ex-Wife and her puppy "Maggie" which she ended up having to get rid of due to ending up being allergic to dogs Friendship and love.

My truck is protected by Smith and Wesson as well as Glock, Remington, and Winchester. As for my dogs.. All they care about is going for a ride, otherwise they don't give a damn about my truck or car.

Well someone has to work out all those bugs for those of us who will buy one a bit later down the road