Duramax fuel filter head replacement April 23, 2022, 04:29:59 pm Hi All, My Duramax fuel filter head/housing is leaking pressure causing a stall/limp mode. I have parts to replace it. It looks simple, 2 bolts, hoses and electric.....but the rear bolt (towards firewall) is not visible/accessible from under the hood or thru the doghouse. It's appears to be covered by a casting on the bracket. Any ideas / experience would be appreciated. Thank you. Quote Selected