Problems with 2007 GMC Sierra 1500 ENGINE AND ENGINE COOLING

I own a 2007 gmc sierra 1500 crew cab. i have some issues when i start my truck in the mornings, i get a tapping noise as if there are lifters stuck or not getting sufficient oil. i have always used the recommended ac oil filters that i purchase from the local dealership parts center so i know that the filter is not the problem. i am a mechanic so i know what an engine is supposed to sound like. the noise will continue until the engine warms up which is approximately 10-15 minutes and is very annoying. i am currently deployed to kandahar, afghanistan in support of operation enduring freedom and schedule to return to the us in late march 2012. i spoke to my wife today and she said that every time she start the vehicle for the first time the noise is there. i would appreciate if you could answer my question concerning this issue. i like the truck but the engine noise has to go. like i said before i have been a mechanic for over 30 years on construction equipment and automotive equipment for the us army. please do not try to give me a short answer to try to get rid of me, i know better. the crankcase is full of oil to the correct level on the dipstick and i use the recommended 5w30 oil. why am i having this issue? note: i am deployed so please don't try to contact me by phone. *tr

#sb-10-06-01-008 (problem) i am concerned with our safety due to the mechanical motor problem with the cylinders. gm warranty # [xxx] i have had oil consumption test done and they ordered parts and told me to bring it in. when bringing it in to "philips buick gmc" fruitland park florida, i was told that i would be able to get a comparable vehichle in exchange while mine is worked on. i get their and they try to give me a compact suv. i am 6'2", 200lbs. and drive a 2007 4 door sierra 1500 that i use for my commercial business every day for work. they were aware of this. i shut my business down to half of what it was in order to be able to afford loosing my truck for a couple days to waranty repairs. i was told i would get a full sized truck or suv. i still have to haul product for my business just to keep it 50% running for those couple days. i also have 4, 200+lbs guys to haul around for work as well, and a special needs daughter who needs the aditional space of a full sized vehichle. i paid over $40,000 for my truck. its not my fault that i have a warranty issue and it has to be worked on. so my business, family, and self shouldnt be the one who is inconvienanced for a gm warranty issue. gm needs to do what it takes to make this right. i spoke to gm and they told me to go rent one myself and pay myself. they said they would only give me $35 dollars a day for reimbursement. with this happening gm is making it impossible for me to work and get my truck fixed at the same time. information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tr

Tl*the contact owns a 2007 gmc sierra. the contact stated that the vehicle was losing oil. the dealer wanted the contact to allow them to check the oil every 1000 to 3000 miles to diagnose the vehicles oil consumption. the manufacturer then told the contact that all gm vehicles use excessive amounts of oil. the contact was concerned about the excessive oil use and why he was not advised when the vehicle was purchased. the manufacturer sent the contact a letter stating that the vehicle was designed to use 1 quart of oil every 2000 miles. the failure mileage was 50000 and the current mileage was 70000.

Tl*the contact owns a 2007 gmc sierra 1500. while driving 30-35 mph, the air bags on the ceiling of the vehicle deployed without an impact. the vehicle was taken to the dealer for repair. the failure and current mileages were 26,146. updated 11/24/08 *cn the vehicle had an exhaust leak, the drivers side window was inoperative, the window switch and connector had melted, the heater seats didnot work, the rear tires were out of balance. updated 11/26/08. *jb

Tl*the contact owns a 2007 gmc sierra 1500. after purchasing the vehicle, the contact began experiencing a drastic vibration. a defect was discovered; however, there is no remedy available. the dealer replaced the powertrain, wheel, wheel rotation, and driver assembly, but the failure still persists. general motors has yet to offer a response as to how they can assist. the failure and current mileages were 1,600. updated 03/04/08. *lj

Tl*the contact owns a 2007 gmc sierra 1500. while driving 15 mph, the brakes failed twice. the vehicle has been to the dealer approximately 15 times since it was purchased in august of 2007. the dealer turned the rotors and changed the brakes and the seat belt assembly. the dealer was unable to duplicate the failure. the fuel gauge failed and the bed of the vehicle separated from the frame. the engine lifters failed to function properly as well. the failure mileage was 12,000 and current mileage was 12,100.

Tl*the contact owns a 2007 gmc sierra 1500. while towing a boat at 35 mph the vehicle made a loud noise, and would not accelerate. the dealer stated that there was no failure. the failure mileage was 600. the current mileage was 4,000.