Posted 5/24/2020 06:19 (#8276415 - in reply to #8275721) Subject: RE: 2007 Chevy coilpack testing.
Had a 2007 suburban with a little miss at 190K miles. Turns out it was from fouling plugs. Piston ring and valvetrain issues on some if those motors. Front and rear ones on driver’s side (1&7). Motor was basically wore out. Good luck with what you find.
2007 Chevy coilpack testing.
