09/17/2026
This Yukon came in with a ticking noise. No check engine light, no codes, so Devon went hunting the old way, with a stethoscope to help track down where the noise was coming from. Valve covers off, and there it was: the rocker arm on cylinder 2 with way more play than it should have. Pushrod checked out fine, so the problem was deeper, a hydraulic lifter on its way out. That's why the whole cylinder head is coming off next.
One little tick. Sometimes it takes you pretty far into an engine.