New to me 2017 Suburban, bought it with 38,000 miles. Loving it - went out to the Truck yesterday and Engine light came on and Loud ticking from Engine. Got a scan code tool and P0324 Code came up - Knock Sensor? Had to have it towed to dealership this morning. Not the dealership where I bought it - too far away. My Sales guy said it should be all covered - it was a certified pre owned. This is my first Chevy - any suggestions, Thoughts? I would not think 38K would hit a problem like this? Thanks.

 

Use never seize on the new components threads. Use dielectric grease on all electrical connections until you've covered the knock sensors completely, inside and out. Then use RTV sealer under and all ALL THE WAY around the seal. Thats not what GM says but it's up to you. Don't worry. If the pressure needs to be eliminated, it will find a path. You will no longer have to "baby" it when washing down the motor with a pressure washer and avoiding your knock sensors anymore. They are located below your intake manifold, so if you've any knowledge of mechanics you can swap them out yourself, for a fraction of the price of a pro doing it and he'll do it GM's way.

I am an expert on water-proofing Jeeps and 4WD vehicles. That includes modifying the spindles with double lip grease seals on older solid axle units, and water proffing the locking hubs.

When taking on deepwater pick a good path (watch other idiots get flooded out, being wussies, and watch their depth levels when they come to a stop by going too slow) and punch it to the floorboards As HARD AS YOU CAN. DON'T LET OFF AT ALL. You WANT the wave of water to keep it away as far as you can do so particularly with the independent front ends of newer vehicles.

Once your winch is underwater it's of no use to you. Use dialectical grease on everything. If you have a distributor, tape it up like no one's business (Not to worry you don't have one).Dielectrical grease all over it. You'll need to run your transmissions and TC vents up to the top of the firewall, of course, as with your axles. Yeah, you have two knock sensors, not one. Best of luck to you!

 

Loud tick, probably AFM lifter.

 

No report yet - waiting on dealer... Thanks for the responses so far

 

Just hear back - Engine needs a new lifter. Is this common? Dealership said its covered but will take about a week.....

 

If you are speaking of a cam lifter, if one is bad, might as replace them all.....with a different brand.

ME and Betsy are going to be with each other for a very a long time. She's 23 years old and has the emission levels WAY under what "The Book" says she ought to be putting out. Like they say" They just don't build them like they used to." No, bad O2 sensors, no new catalytic converter, no nothing. Original transmission and T-C.too. Bad water pump (barely seeping from the weep hole) 6 years ago. I love my Chevy!

 

There have been issues with AFM lifters. I have installed and have been using a Range AFM eliminator module in my '11 for 90k miles now to avoid possible issues with AFM lifters.
Yes highway mileage is down 1-2 mpg. but I have not needed a new camshaft and lifters either nor have I burnt more gas than the repair costs.