Navy Vet

UPDATE: I ended up having the truck towed to a dealer shop about 50 miles away. I called GM roadside and my file had no record of customer care authorizing anything with the tow and they wanted $379 to take it to the dealer, citing it was out of warranty. I called my insurance company and, in contrast to GM, they helped out. I was just notified by the service department that #5 cylinder had a bent pushrod and due to lifter failure. It also wiped the cam and scattered shrapnel throughout the motor. In the end, new engine. The dealer has gone back to GM to see if they will cover it under the power train warranty. Given the widespread history of this failure with these engines, I certainly hope they will do the right thing. The dealership (Chapman Payson, AZ) I went to was very helpful, as was their regional manager. GM picked up 90% of the engine swap and I ended up with one of GMs reman 5.3. GM customer care was just about useless and provided nothing but empty promises. My recommendation if you have lifter issues is find a dealership that is willing to help you.

I have a 2019 Silverado L84 5.3 with a failed lifter on #5 cylinder. This happened with 60,123 miles on the truck - yep, 123 miles out of GM's warranty. So far, GM has done nothing to remedy this, despite the widespread lifter issue with these engines. They did offer to pay for the towing. . . . then changed it to the first 25 miles. . . . . then no record of any such authorization. I have been a lifetime GM owner and have also built and raced GM products. Stunning! Needless to say, I will never own another one. Their gross mishandling of a serious design and product flaw is utterly despicable.

I don't want to speculate, but the misfire could be a couple of things. Given how intermittent the problem is, the most obvious would be either the lifter or the oil control solenoid valve. A visual inspection would not identify either of these unless the lifter spring was permanently collapsed. However, it could also be spark related with wiring, coil, spark plug and spark plug wire. But, this type of problem should be fairly consistent, unless you have something like an intermittent grounding issue. It could be fuel related, such as an intermittent injector issue (stuck/power/debris). Given the inherent lifter-related defects with these engines, I would start there.

I also have a 2019 Silverado RST 5.3L with 60,123 miles on it. Last week I was driving home multiple errors popped up (service esc, service parking brake, check engine, etc.), engine has a ticking noise (rocker/lifter) and is missing and down on power. I am 123 miles out of warranty. GM has graciously offered to pick up the first 25 miles of towing, so I'm on the hook for a $5-7K repair bills, $11K if it wiped the cam. 123 miles - unbelievable. With the widespread lifter failure inherent with these engines and the cost of repairs, I am not surprised that GM did not issue a recall. I have owned, built or raced nothing but GM in my lifetime, and I will never buy or own another one. Utterly disgusted with GM. Does anyone know of a reliable fix or retrofit to replace the DFM lifter setup? Thanks for any help!!