persistent
TYF Newbie
- Joined
- Nov 10, 2023
- Posts
- 9
- Reaction score
- 14
my wife's 2020 tahoe started giving episodic check engine lights and had a rough idle a couple weeks ago. i do basic maintenance on this car and change the oil every 5k mi and oil filter every 20k mi. engine oil level looked fine, and when i used a scan tool (launch x431) it didn't show any notable engine-related trouble codes. as a result of having so little to go on for diagnostics, i had her take the car to a nearby dealership last friday.
the dealership takes 4 business days to make a substantive diagnostic response, where they eventually note some historical misfires, that they're checking spark plugs and fuel injectors, and a cylinder has low compression and is being tested for leaks. after 5 buiness days, they say "we removed the valve cover and found some sludge built up" and "there is a stuck lifter in engine. recommend replace engine". the quote to replace the engine is $14k.
based on what i know about the 2020 tahoe, i am to understand that stuck lifters that require replacement is not an uncommon scenario, but suggesting a wholesale engine replacement seems ridiculous. i did some searching here on the forum and found this recent thread where it sounds like a similar scenario has led to the (questionable) suggestion of an engine replacement from a dealership. as a result of what i read in that thread, i plan to get a 2nd opinion from an independent shop.
i appreciate any input here, thanks for reading.
the dealership takes 4 business days to make a substantive diagnostic response, where they eventually note some historical misfires, that they're checking spark plugs and fuel injectors, and a cylinder has low compression and is being tested for leaks. after 5 buiness days, they say "we removed the valve cover and found some sludge built up" and "there is a stuck lifter in engine. recommend replace engine". the quote to replace the engine is $14k.
based on what i know about the 2020 tahoe, i am to understand that stuck lifters that require replacement is not an uncommon scenario, but suggesting a wholesale engine replacement seems ridiculous. i did some searching here on the forum and found this recent thread where it sounds like a similar scenario has led to the (questionable) suggestion of an engine replacement from a dealership. as a result of what i read in that thread, i plan to get a 2nd opinion from an independent shop.
i appreciate any input here, thanks for reading.
