1/2 can seafoam = $3.50.....if the lifter was salvageable I would have tried it first. I have never had it not work on a gm with lifter tick.
That worked on my old 198k k1500 a couple weeks ago. I hadn't driven it in quite some time (weeks/months?...) and heard the telltale tick. About 1/4 can (at best) Seafoam and the tick is gone. Happened one other time as well, usually after a long "sit" of unuse. Airjer, do you always change the oil after a 100 or 1000 miles, or just go to next oil change? Last time I ran it hard for about 100 miles, and changed. This time I have about 400 miles on it without changing. Thanks for info.