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General Motors 4.3L V-6 Engine

The General Motors 4.3L V-6 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: GM Powertrain 4.3L V-6

Part of the General Motors 4.3L engine family — 4 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 V-6.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Oil		4.5 qt	—

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
0A4637	Air Cleaner	Air filter
0A1232	D.C. ALTERNATOR ASSY	Alternator
G93G75818	Installing Balance Shaft	Balance shaft installation
0A4278A	BELT SERPENTNE 72.5"	Belt
0A4278B	SERPENTINE BELT 72-1/2	Belt
0A5264	V-BELT 3/8 X 41	Belt
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
0758720177	GASKET, WATER PUMP	Gasket
0758720225	GASKET, DISTR	Gasket
0A2440	GASKET THERMOSTAT	Gasket
0A37970137	GASKET, OIL PAN	Gasket
0A37970164	GASKET KIT, INT MANIF (INCLS GASKETS & INST SH)	Gasket
0A37970168	GASKET, VLV RKR ARM CVR	Gasket
0A37970177	GASKET, CYL HD	Gasket
0A37970213	GASKET, CR/SHF RR OIL SEAL HSG	Gasket
0A37970219	GASKET, W/PMP CVR	Gasket
0A37970239	GASKET KIT, CYL HEAD	Gasket
0A4085	GASKET EXHAUST MANIFOLD	Gasket
057448	HOSE 5/8 ID TYPE 3 SINGLE (12")	Hose
059057	HOSE 3/4 ID SAE-30R2	Hose
0A37970237	HOSE, W/PMP INL	Hose
93A75812	Intake Manifold Assembly	Intake manifold
0A37970001	FILTER OIL	Oil filter
0A37970191	COIL, DISTR PICK UP (DISTRIBUTOR PICK UP COIL)	Service part / kit
0A37970193	Distributor Ignition Module (4.3 Liter Gas)	Service part / kit
0A37970195	Distributor Rotor (4.3 Liter Gas)	Service part / kit
0A37970198	COIL, IGN	Service part / kit
0A37970201	CAP, DISTR (DISTRIBUTOR CAP)	Service part / kit
0A37970222	GEAR KIT, BALR SHF (1997-2001) (INCLS DRIVE & DRIVEN GRS, ITEMS 89 & 95)	Service part / kit
0A37970223	CHAIN KIT, TMG (1999-2001) (INCLS CHAIN, CR/SHF SPROCKET, CM/SHF SPROCKET)	Service part / kit
0A4215	DIP STICK 4.3L GM	Service part / kit
0A4244	CONNECTOR COIL TO DISTRIBUTOR	Service part / kit
10452457	Rotor, Distributor (V6)	Service part / kit
10452458	Cap, Distributor (V6)	Service part / kit
15190971	Foam Sleeve	Service part / kit
G95F27057	Valve Stem Oil Seals	Service part / kit
0A37970120	PUMP KIT, WATER	Pump
0A37970122	PUMP, OIL	Pump
0758720149	SEAL, CR/SHAFT RR OIL (1996)	Seal
0A37970127	SEAL, CR/SHAFT RR OIL (1997-98)	Seal
0A37970142	SEAL, CR/SHF FRT OIL	Seal
0A37970180	SEAL, INT VLV STEM OIL	Seal
0A37970208	SEAL, CR/SHAFT RR OIL (1999-2001)	Seal
0A37970217	SEAL, OIL PAN DRN PLUG	Seal
0A37970228	SEAL, EXH VLV STEM OIL	Seal
035606	SENSOR HI COOLANT SHUTDOWN	Sensor
053666	SENDER OIL PRESSURE	Sensor
053667	SENDER WATER TEMP	Sensor
057522	SENSOR COOLANT LEVEL	Sensor
0A8584	Switch	Sensor
0A37970172	SPARK PLUG	Spark plug
0A4277	WIRES SPARK PLUG 4.3L	Spark plug
059056A	STARTER	Starter
075885	THERMOSTAT 195 DEG	Thermostat

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 V-6?

The General Motors 4.3L V-6 engine has an oil capacity of 4.0 liters.

What is the displacement of the General Motors 4.3L V-6?

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

Which generators use the General Motors 4.3L V-6 engine?

The General Motors 4.3L V-6 powers 1 generator set(s), including Power Solutions International 4.3L.

What is a common problem with the General Motors 4.3L V-6 engine?

A commonly reported issue on generators using the General Motors 4.3L V-6 is: Unit Not In Auto LED. Fix: Move the AUTO/OFF/MANUAL switch to the AUTO position for automatic starting..