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Home›Engines›General Motors 5.7L LPG and CNG Injected Engines

General Motors 5.7L LPG and CNG Injected Engines Engine

The General Motors 5.7L LPG and CNG Injected Engines is a 2.7 L engine. It powers generator sets from General Motors and Kem/Power Engines, including the 5.7L LPG and CNG Injected Mobile Alternative Fueled Engines and Base Engine Assembly.

Also known as: GM Powertrain 5.7L LPG and CNG Injected Engines

2.7 L
Displacement
On this pageSpecsGenerator setsMaintenanceFAQ

Engine specifications

Displacement2.7 L

Generator sets powered by this engine

2

Shared across brands: General Motors, Kem/Power Engines

General Motors 5.7L LPG and CNG Injected Mobile Alternative Fueled EnginesKem/Power Engines Base Engine Assembly

Common problems

14
  • Vehicle Speed Sensor (VSS) Voltage Below Normal SPN 84 FMI 4
  • Vehicle Speed Sensor (VSS) Voltage Above Normal or Shorted High SPN 84 FMI 3
  • Vehicle Speed Sensor (VSS) Data Valid but Below Normal SPN 84 FMI 1
  • Vehicle Speed Sensor (VSS) Data Erratic, Intermittent or Incorrect SPN 84 FMI 2
  • SPN 65559 is set SPN 65559
    Fix: Refer to SPN 65559
  • Scan tool does not power up
    Fix: Refer to Scan Tool Does Not Power Up
  • Scan tool does not communicate with one or more of the expected control modules
    Fix: Refer to Scan Tool Does Not Communicate with CAN Device
  • Fuel Level Sensor 2 Circuit Voltage Below Normal or Shorted Low SPN 38 FMI 4
  • Fuel Level Sensor 2 Circuit Voltage Above Normal or Shorted High SPN 38 FMI 3
  • Fuel Level Sensor 1 Circuit Voltage Below Normal or Shorted Low SPN 96 FMI 4
  • Fuel Level Sensor 1 Circuit Voltage Above Normal or Shorted High SPN 96 FMI 3
  • Engine does not crank (if equipped) SPN 66002
    Fix: Refer to SPN 66002; if the vehicle is not equipped with an ECM controlled starter relay, repair the starting system
  • Engine does not crank SPN 66001
    Fix: Refer to SPN 66001
  • Engine cranks but does not run
    Fix: Refer to Engine Cranks But Does Not Run

Compiled from service & troubleshooting documentation across every generator set that uses the General Motors 5.7L LPG and CNG Injected Engines.

Maintenance schedule

ItemSpecCapacityPart #Interval
Air filterService the air cleaner more frequently under severely dusty or dirty conditions.—
Fuel filter—750 hr
Oil filterevery 1000 hours or 6 monthsPF-251000 hr Amazon eBay $475.00 eBay $399.99
BatteryCheck battery condition and cables frequently.—3000 hr
Belt—2000 hr
Coolant—
Oilevery 1250 hours or 8 months6.0 qts—1250 hr
Spark plug41-9932000 hr Amazon eBay $13.48

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Common questions

What is the displacement of the General Motors 5.7L LPG and CNG Injected Engines?

The General Motors 5.7L LPG and CNG Injected Engines has a displacement of 2.7 liters.

Which generators use the General Motors 5.7L LPG and CNG Injected Engines engine?

The General Motors 5.7L LPG and CNG Injected Engines powers 2 generator set(s), including General Motors 5.7L LPG and CNG Injected Mobile Alternative Fueled Engines, Kem/Power Engines Base Engine Assembly.

How often should you change the oil in the General Motors 5.7L LPG and CNG Injected Engines?

The General Motors 5.7L LPG and CNG Injected Engines oil change interval is every 1250 hours.

What is a common problem with the General Motors 5.7L LPG and CNG Injected Engines engine?

A commonly reported issue on generators using the General Motors 5.7L LPG and CNG Injected Engines is: Vehicle Speed Sensor (VSS) Voltage Below Normal.