Recipe - GM 6.0L V8 Gasoline (GM HD, LY6-L96 2008-2019; Express/Savana vans 2008-2020)
Specific Fix build
Reliability tier: verified - verify before ordering, see /disclosure/
Fuel delivery repair for the HD 6.0 gas (mode Fuel delivery: pump, injectors, pressure (L96/LY6), the top VOQ cluster): long cranks and lean misfire trace to the injector/pressure side. The in-tank pump module PN is not surfaced by the dealer catalog (disclosed catalog gap) - work the verified injector/rail records and source the module by VIN at the counter.
Parts
- GM 6.0L HD Fuel Injector (OEM) - fuel injector, current PN (12738849; 2010+ window) (qty 1)
- GM 6.0L HD Fuel Injection Rail (OEM) - fuel injection rail (12660710) on leak/damage findings (qty 1)
Install order
- log fuel pressure hot vs cold; separate sensor lies from real drops
- injector balance / smoke-test for vacuum leaks before hardware
- renew the failed injector(s); rail only on leak or damage findings
- in-tank pump module: source by VIN at the counter (catalog gap, disclosed)
Expected outcome
Stable fuel pressure, no lean misfire, clean hot restarts.
Do not
- do not condemn the pump without pressure logs at rail and pump
Parts budget
About $45-$200 in parts. It depends on what the diagnosis finds; each option below is what you buy together. Prices marked "at Dave's" are Dave's Auto Center's, the same as in his store; the others are approximate prices from OEM and maker catalogs, rounded (a manufacturer's list price can run higher). Parts only, no labor.