Fuel pumps and modules, injectors, filters, pressure regulators and throttle bodies to General Motors original specification for the full GM range.
Fuel delivery components are matched to the engine calibration by flow rate and spray pattern. On direct-injection GM engines the tolerance is tighter still, because injector opening time is measured in fractions of a millisecond and the module trims each cylinder against the others. An injector that flows five percent high sits within the module's correction range at idle and runs out of authority under load. We supply fuel system components to the original flow specification for the engine.
Pressure alone is not proof of health: a pump can meet pressure at idle and fall short on volume under load, which reads as a misfire only at high demand.
On direct-injection engines, replace the high-pressure pump and its lifter as a set where GM specifies it. A worn lifter destroys a new pump quickly and the failure looks identical to the original complaint.
We supply Fuel System components across every General Motors division:
On direct-injection GM engines, yes. Each injector has a trim value that must be entered into the engine control module, or fuelling will be incorrect from the first start.
On many GM platforms the filter is integrated into the pump module and is not separately serviceable. Send the VIN and we confirm which arrangement your vehicle uses.
Send the VIN and a description. We will identify the correct OE part and quote it back to you.
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