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General Motors 4.3L V6 Engine

Name: General Motors 4.3L V6 Engine
Brand: General Motors

The General Motors 4.3L V6 is a 4.29 L 6-cylinder naturally aspirated engine rated at 3000 rpm, producing up to 78.3 kW. It powers generator sets from Power Solutions International, including the 4.3L. It holds 4 L (1.1 gal) of oil and 8.1 L (2.1 gal) of coolant.

Also known as: General Motors 4.3L V6

Part of the General Motors 4.3L engine family — 2 variants share parts & fitment.

4.294 L

Displacement

Cylinders

3000 rpm

Rated speed

78 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ

Engine specifications

Oil capacity	4.0 L
Coolant capacity	8.1 L
Displacement	4.294 L
Cylinders	6
Aspiration	Naturally aspirated
Rated speed	3000 rpm
Gross power	78 kW

Generator sets powered by this engine

Power Solutions International 4.3L

Common problems

Unit Not In Auto LED 12
Fix: Move the AUTO/OFF/MANUAL switch to the AUTO position for automatic starting.
Low Fuel LED 11
Fix: Check fuel supply and replenish as required.
Press To Test Button 13
Overcrank LED 17
Fix: Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. Check for dirty fuel filter and replace if necessary (See Maintenance section of Engine Manual). Check for dirty or plugged air filter and replace if necessary (See Maintenance section of Engine Manual).
No Engine Stop. 29
Fix: Check Engine Start Timer setting. Check Engine Start Connections. Investigate why the Engine Control Switch was put in Manual. Contact your Dealer or Distributor for assistance.
No Engine Start. 28
Fix: Check Engine Start connections. Investigate why the Engine Control Switch was put in Manual. Contact your Dealer or Distributor for assistance.
No AC Output Voltage. 27
Fix: Verify output with another meter if ok check meter, if ok check meter fuses. Regulator fuse is blown. Replace fuse. Contact your Dealer or Distributor if voltage build-up causes fuse to blow. Check rotating rectifier for damaged diodes. Replace all diodes if any are failed.
Low Water Temp LED 8
Low Oil Pressure Pre-alarm LED 10
Low Oil Pressure LED 16
Fix: Check oil level, lines and filters. If the oil system is okay but oil level is low, replenish.
Low Coolant Temperature LED 21
Fix: Check for the following conditions: Coolant heater not connected to power supply. Check for blown fuse, open circuit breaker or disconnected heater cord and correct as required. Check for low-coolant level and replenish if required. Look for possible coolant leakage points and repair as required.
Low Battery LED 23
Fix: Check electrolyte level and charger output or replace the battery.
High Engine Temp Pre-alarm LED 9
Fault LED on but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits. 24
Fix: Contact your Dealer or Distributor for service.
Engine will not crank. 26
Fix: Check for the following conditions: Fault lamp on. Correct fault and reset control. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. Discharged or defective battery. Recharge or replace the battery.

Compiled from service & troubleshooting documentation across every generator set that uses the General Motors 4.3L V6.

Maintenance schedule

Item	Spec	Capacity	Part #
Air filter			—
Fuel filter			—
Oil filter	Full-flow oil filter		—
Battery			—
Belt			—
Coolant			—
Oil		4.5 qt	—
Spark plug			—

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

Parts cataloged across the General Motors 4.3L family

Part #	Description	Category
G93G75818	Installing Balance Shaft	balance_shaft_installation
G93B75813	Intake Manifold Bolt Tightening Sequence (Upper Manifold)	bolt_sequence
G93C75814	Intake Manifold Bolt Tightening Sequence (Lower Manifold)	bolt_sequence
G95B27053	Cylinder Head Bolt Tightening Sequence	bolt_sequence
93A75812	Intake Manifold Assembly	intake_manifold
10452457	Rotor, Distributor (V6)	other_service
10452458	DISTRIBUTOR CAP	other_service
15190971	Foam Sleeve	other_service
G95F27057	Valve Stem Oil Seals	other_service
G95127050	Applying RTV Sealant Before Installing Intake Manifold	sealant_application
G00178767	CKP Sensor Reluctor Ring (Models Equipped With CKP Sensor)	sensor_replacement

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Common questions

What is the oil capacity of the General Motors 4.3L V6?

The General Motors 4.3L V6 engine has an oil capacity of 4.0 liters.

What is the displacement of the General Motors 4.3L V6?

The General Motors 4.3L V6 has a displacement of 4.294 liters with 6 cylinders.

Which generators use the General Motors 4.3L V6 engine?

The General Motors 4.3L V6 powers 1 generator set(s), including Power Solutions International 4.3L.

What is a common problem with the General Motors 4.3L V6 engine?

A commonly reported issue on generators using the General Motors 4.3L V6 is: Unit Not In Auto LED. Fix: Move the AUTO/OFF/MANUAL switch to the AUTO position for automatic starting..