This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
While driving a loud knocking noise was heard from the front. Consumer was able to drive the vehicle to dealer for inspection, and mechanic determined that a carbon build up on the piston caused the knocking.
When starting the vehicle, there is a very audible engine knock. It seems to go away after about 30 seconds or so. Doesn't get beter nor does it get worse but it is very noticeable.
2002 Yukon - brief engine knock when vehilce is started. Also, has an exhaust noise/rattle at approximately 40-42 mph, 1000=1300 rpms. Noises started at approximately 2000 miles.
- Chesterfield, VA, USA
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- Placentia, CA, USA