Lancaster
Member
Very, very, very unusual. Looks like you are under warranty anyway. That is what it is there for- please let us know what you find for posterity.
2012 Denali with 30k miles, Motor Needs Replaced
- Thread starter GAFan
- Start date
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TheAgency
Member
Sorry for the headache you have had to deal with. To share my story, I've got a 2008 LTZ Avalanche with a 6.0L motor, 106k that was weeks away from trade-in. Slowly I started to notice a similar "hammering sound", which progressively got worse in about a week's time before I brought it in the dealer.
They also initially suggested a motor replacement, but after pulling the motor out they discovered a lifter had gone bad. I elected to have the motor rebuilt with new lifters and camshaft, in lieu of a replacement motor. Total cost was $4,200 and work was done in a week with a 12,000 mile/1 year warranty.
Be thankful you have that warranty and spend the extra cash on really frequent oil changes.
They also initially suggested a motor replacement, but after pulling the motor out they discovered a lifter had gone bad. I elected to have the motor rebuilt with new lifters and camshaft, in lieu of a replacement motor. Total cost was $4,200 and work was done in a week with a 12,000 mile/1 year warranty.
Be thankful you have that warranty and spend the extra cash on really frequent oil changes.
SRTH8R
Full Access Member
I'm guessing this is a Displacment on Demand motor. Only ones I saw have issues the short time I worked at a gm dealer.
wow, 4,200$ for lifter and cam swap.
ThwopKing
Full Access Member
Any update on this?
