. started to experience a knock in the motor. REMEMBER this truck is still under the 3yr-36,000. mile warranty! called GMC, they said take it to another dealer, they said i had a problem and replaced the lifters. truck was did not make a sound for 2-3 weeks. took it back NOW IT IS A COLD ENGINE KNOCK. and that that is normal. then GMC sends me a 100,000. mile warranty that i didn't except. NOW THEY WON"T FIX THE PROBLEM AND THERE DEALER SAYS " THEY WILL FIX IT WHEN IT BLOWS UP" ALL THEY SAY IS IT IS NORMAL TO MAKE THIS NOISE. I WILL NEVER BUY A GM PRODUCT AGAIN AND I WILL HOPEFULLY STOP SOMEONE FROM MAKING THE SAME MISTAKE AS ME" BUYING A GM PRODUCT"
This is a great truck. Very high build quality and still drives like a new truck. Usual problem with the parking brake dying early and at about 70000 miles echoes of the 'piston slap' problem. New brakes cost $1300 at 120000 miles partially due to problems complicated by the parking brake issue. At 125000 I've got a minor but annoying rear main seal leak.
Pros: Nice paint (I love the Metallic Blue), Engine!! (4.8L has the power)...I'm sure 5.?L would burn up tires. Decently designed interior. Stereo is adequate. Cons: Poor build quality with noises in dash and electrical problem right off of the lot! Reliability ratings are poor at best from my readings but my experience has been okay so far. I would recommend the truck for the love of driving a powerful Chevy truck that looks nice...don't buy it for a long-term owner... SF