Tell that to the bastards at GM. I had the GM rep finally come out to "look" at the vehicle. He didn't even drive it. Just poured some shit in the gas tank and claimed it was fixed.
The stupid thing was that the manager said "this is normal" when he gave me a new suburban as a loaner while the GM rep was coming in to see it. The suburban ran nice and quietly. When I brought it back we did a side by side comparison and he acknowledged that my vehicle wasn't "normal" but said he couldn't do anything about it. I then suggested we do an engine swap and I'd stop complaining.
I have the same problem with my 2002 Silverado, I contacted GM warranty service and they offered me a free 6 year or 100,000 mile extended warranty on this engine, excluding vehicles registered in California. contact gm warranty
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