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General Motors Industrial Powertrain Vortec 5.0 L Engine

The General Motors Industrial Powertrain Vortec 5.0 L is a 5 L 8-cylinder natural engine rated at 1800 rpm, producing up to 66.4 kW. It powers generator sets from Kohler and SDMO, including the 48RCL, 48RCL-LPG, 48RCL-NG and 50REZG. It holds 4.7 L (1.2 gal) of oil and 17 L (4.5 gal) of coolant.

Also known as: General Motors Industrial Powertrain Vortec 5.0 L

5.0 L

Displacement

Cylinders

1800 rpm

Rated speed

66 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ Service intervals Torque & specs Fluids Fault codes Procedures Wiring

Engine specifications

Oil capacity	4.7 L
Coolant capacity	17.0 L
Displacement	5.0 L
Cylinders	8
Aspiration	natural
Rated speed	1800 rpm
Gross power	66 kW

Generator sets powered by this engine

Shared across brands: Kohler, SDMO

Kohler 48RCL Kohler 48RCL-LPG Kohler 48RCL-NG Kohler 50REZG Kohler 50RZG SDMO G50

Common problems

Does not crank
Cause: Controller and Emergency Stop Switch
Cranks but does not start
Cause: Controller and Emergency Stop Switch
Trailer is unstable or noisy during towing.
Cause: Tire(s) worn or damaged
Fix: Check tire condition. Repair or replace.
Starts hard
Cause: Controller fault
Fix: Troubleshoot the controller.
Lacks power
Cause: Air cleaner clogged
Fix: Clean or replace the filter element.
Overheats
Cause: Governor inoperative
Fix: Adjust the governor.
No or low output voltage
Cause: Voltage regulation inoperative
Fix: Replace the junction box sensing fuses. If the fuse blows again, troubleshoot the controller.
Stops suddenly
Cause: Engine overload
Fix: Reduce the electrical load. See the generator set spec sheet for wattage specifications.
Excessive or abnormal noise
Cause: Vibration excessive
Fix: Tighten loose components.
Tow vehicle and trailer are unstable or noisy during braking
Cause: Tow vehicle brakes worn
Fix: Check brake fluid level. Add fluid as necessary.
Duplex circuit breaker(s) tripped or trips when reset
Cause: Circuit breaker overloaded
Fix: Reduce circuit load. Reset duplex circuit breaker(s).
Voltage selector switch knob does not rotate.
Cause: Padlock installed on lockout feature
Fix: Contact onsite electrician or rental distributor.
Main circuit breaker(s) tripped or trips when reset
Cause: Circuit breaker overloaded
Fix: Reduce circuit load. Reset circuit breaker.
High fuel consumption
Cause: Compression weak
Fix: Check the compression.
Duplex receptacles have no power
Cause: Generator set not running
Fix: Power to duplex receptacles is from the generator set—not shore power.

Compiled from service & troubleshooting documentation across every generator set that uses the General Motors Industrial Powertrain Vortec 5.0 L.

Maintenance schedule

Item	Spec	Capacity	Part #
Oil filter	Cartridge		GM16703	Amazon eBay $58.00 NAPA $3.59
Coolant		20.8 L	—
Oil		6.2 L	—

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

Service intervals

Item	Action	Hours	Months	Notes
Engine oil level	Check	24 hr		Check the oil level in the crankcase every 24 hours of operation or before the engine is started each day
Air cleaner element	Inspect	100 hr
Change engine oil and filter	Change	100 hr
Check all bolts and nuts for tightness	Check	100 hr
Filter(s)	Replace	150 hr	3 mo	Service more frequently if operated in dusty areas
Oil	Change	150 hr	3 mo	Every 150 Hours or 3 Months
Blow dust out of alternator	Clean	300 hr		2 Yrs or 300 Hrs; service more frequently in dusty areas
Valve clearance	Adjust	500 hr		3 Yrs or 500 Hrs
Wire-cable insulation breakdown	Test	500 hr		3 Yrs or 500 Hrs
Air cleaner element	Replace	1000 hr
Belts and belt tension	Check	1000 hr
Coolant	Change	1500 hr		1500 Hours
Engine coolant	Replace	5000 hr	60 mo	When long-life coolant used
Alternator end bracket bearing	Replace	10000 hr		20--300 kW models; prime power applications
Check coolant level	Check		0 mo
Check engine oil level	Check		0 mo
Check for fluid leaks	Check		0 mo
Coolant temperature protection level	Check		6 mo	Six Months
Paralleling box	Inspect		12 mo	Annually by a Kohler authorized distributor/dealer, or when wear, damage, deterioration, or malfunction is evident or suspected.
Paralleling box internal components	Inspect		1 mo	Monthly or when a condition noticed during external inspection may have affected internal components; enclosure cover must be removed by trained personnel.
Safety and alarm operation	Check		6 mo	Six Months
Safety and alarm operation	Test		6 mo	Six Months
Tighten DC electrical connections	Check		6 mo	Six Months
Wheel lug nut torque	Check			First service — First 80/160 km (50/100 miles); then Quarterly or 3000 Miles

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Service specifications

Type	Item	Value	Unit	Condition
Gap	Spark plug gap	0.51	mm (0.02 in.)
Gap	Spark plug gap	0.7--0.8	mm (0.028--0.030 in.)
Gap	Spark plug gap	0.76	mm (0.03 in.)
Gap	Spark plug gap	0.8--0.9	mm (0.03--0.04 in.)
Gap	Spark plug gap	0.89	mm (0.035 in.)
Gap	Spark plug gap	0.9--1.0	mm (0.036--0.04 in.)
Other	10 in. weld flange bolt circle diameter B	361.95	mm (14.25 in.)
Other	10 in. weld flange outside diameter C	406.4	mm (16.0 in.)
Other	10 in. weld flange quantity of bolts / bolt hole diameter D	12, 25.40	mm (1.00 in.)
Other	12 in. weld flange bolt circle diameter B	431.80	mm (17.00 in.)
Other	12 in. weld flange outside diameter C	482.6	mm (19.0 in.)
Other	12 in. weld flange quantity of bolts / bolt hole diameter D	12, 25.40	mm (1.00 in.)
Other	14 in. weld flange bolt circle diameter B	476.25	mm (18.75 in.)
Other	14 in. weld flange outside diameter C	533.4	mm (21.0 in.)
Other	14 in. weld flange quantity of bolts / bolt hole diameter D	12, 28.58	mm (1.13 in.)
Other	16 in. weld flange bolt circle diameter B	539.75	mm (21.25 in.)
Other	16 in. weld flange outside diameter C	596.9	mm (23.5 in.)
Other	16 in. weld flange quantity of bolts / bolt hole diameter D	16, 28.58	mm (1.13 in.)
Other	18 in. weld flange bolt circle diameter B	577.85	mm (22.75 in.)
Other	18 in. weld flange outside diameter C	635.0	mm (25.0 in.)
Other	18 in. weld flange quantity of bolts / bolt hole diameter D	16, 31.75	mm (1.25 in.)
Other	20 in. weld flange bolt circle diameter B	635.00	mm (25.00 in.)
Other	20 in. weld flange outside diameter C	698.5	mm (27.5 in.)
Other	20 in. weld flange quantity of bolts / bolt hole diameter D	20, 31.75	mm (1.25 in.)
Other	5 in. weld flange bolt circle diameter B	215.90	mm (8.50 in.)
Other	5 in. weld flange outside diameter C	241.30	mm (9.50 in.)
Other	5 in. weld flange quantity of bolts / bolt hole diameter D	8, 22.23	mm (0.88 in.)
Other	6 in. weld flange bolt circle diameter B	254.0	mm (10.0 in.)
Other	6 in. weld flange outside diameter C	279.4	mm (11.0 in.)
Other	6 in. weld flange quantity of bolts / bolt hole diameter D	8, 22.23	mm (0.88 in.)
Other	8 in. weld flange bolt circle diameter B	298.45	mm (11.75 in.)
Other	8 in. weld flange outside diameter C	342.9	mm (13.5 in.)
Other	8 in. weld flange quantity of bolts / bolt hole diameter D	8, 22.23	mm (0.88 in.)
Other	Alternator protection current/time limits	200%: 40 seconds; 300%: 10 seconds; 425%: 5 seconds; 950%: 1 second		rated current percentage
Other	Battery specific gravity (charge threshold)	1.215	specific gravity	at 26.7 C (80 F); charge if below
Other	Battery specific gravity (fully charged)	1.260	specific gravity	at 26.7 C (80 F) electrolyte temperature
Other	Controller operating temperature range	--40 to 70 C (--40 to 158 F)
Other	Controller power drain	400 milliamps at 12V; 200 milliamps at 24V
Other	Engine speed adjustment	50		default setting; settings between 40 and 60 acceptable; 52 increases speed by 2 RPM, 49 decreases by 1 RPM
Other	Gaseous fuel tank maximum safe fill level	80	% of total fuel tank volume
Other	Generator to bus phase angle	-10 to 10	degrees	verify with contactor closed
Other	LP gas fuel system leak test pressure	6--8 ounces per square inch (10--14 inches water column)	oz/in2 (in. water column)	test pressurized
Other	Reactive droop	1	%	default setting; range 0.5 - 2%
Other	Weld flange angle A (10, 12, 14 in. nominal pipe size)	30	deg.
Other	Weld flange angle A (16, 18, 20 in. nominal pipe size)	22.5	deg.
Other	Weld flange angle A (5, 6, 8 in. nominal pipe size)	45	deg.
Other	Wheel stud size	1/2-20
Pressure	Fuel tank pressure relief valve (close)	1937--2130	kPa (281--309 psi)
Pressure	Fuel tank pressure relief valve (open)	2151	kPa (312 psi) min
Pressure	LPG vapor fuel supply pressure	1.24-2.74	kPa	at inlet
Pressure	Natural gas fuel supply pressure	1.74-2.74	kPa	at inlet
Pressure	Tire inflation pressure @ rated load	552 (80 psi)	kPa (psi)
Speed	Overfrequency default setting	110% of nominal	%
Speed	Overfrequency setting range	102%--140% of nominal	%
Speed	Overfrequency time delay	10	sec
Speed	Underfrequency default setting	90% of nominal	%
Speed	Underfrequency setting range	80%--95% of nominal	%
Speed	Underfrequency time delay	10 (short term), 60 (long term)	sec
Temperature	Block heater thermostat cut-off temperature	27--38	°C	coolant temperature
Temperature	Block heater thermostat cut-off temperature	80--100	°F	coolant temperature

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

Fluid	Grade	Standard	Ambient	Capacity	Notes
Coolant	50% ethylene glycol			0.6 L	Provides freezing protection to --37_C (--34_F) and overheating protection to 129_C (265_F). Do not use alcohol or methanol antifreeze. Coolant added after block heater installation is approximately 0.6 L (0.2 gal).
Coolant	Long-life coolant				Change interval 5000 hours or 5 years when long-life coolant used; do not mix coolant types
Engine oil	SAE 5W-30	API Starburst (for gasoline engines)	below -18°C	4.7 L	For below -18C (0F)
Engine oil	SAE 10W-30	API Starburst (for gasoline engines)	above -18°C	4.7 L	For -18C (0F) and above; CC/CD classification and straight-weight industrial/stationary oils not acceptable
Grease	Lithium complex				Axle bearing grease type
Grease	Multipurpose grease				Lubricate trailer hitch/coupler contact points
Grease	Petroleum jelly, silicon grease, or other nonconductive grease				Coat battery terminals after reconnecting
Grease	White lithium grease				Apply a small amount behind the brake shoe where it rubs against the backing plate

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Fault codes

Code	Name	Meaning	Severity	Action
AC Sens Lost	AC Sensing Lost	In Auto mode, generator output AC sensing is lost; starts 10 seconds after crank disconnect. Warning after 1 second if no output detected after crank disconnect; shutdown after 3 seconds if voltage was present and then lost.	Warning	Contact an authorized distributor/dealer for service.
AC Sensing Lost			Warning
Accy PwrOver	Accessory Power Overload	Over current fault on the accessory controller power output	Warning
Accy PwrOver Warning	Accessory Power Overload	An over current fault (short circuit) on the accessory controller power output.	Warning	Contact an authorized distributor/dealer for service.
Alt Protect Shtdwn	Alternator Protection Shutdown	High generator current detected; shuts down to protect alternator windings from overheating (38RCL only).	Shutdown	Reduce the load.
Alternator Protection			Shutdown
ATS Com Error	ATS Communication Error	Warning is displayed if RXT interface connection is lost.	Warning	Check communication wiring between transfer switch interface board and generator set.
ATS PhaseRot	ATS Phase Rotation Mismatch	Transfer switch phase rotation does not match; ATS will not transfer.	Warning	Correct the ATS connection per the ATS Installation manual, wiring diagrams, and labels on the transfer switch.
Aux Input	Auxiliary Input	An optional customer-connected input is closed (digital input from optional PIM).	Shutdown	Check customer-supplied equipment.
Auxiliary Input			Warning
Avg Current	High		Warning
Avg Gen Voltage L-L	Low		Warning
Batt Chg Flt	Battery Charger Fault	Input to PIM from an external battery charger (not the built-in charger).	Warning	Check external battery charger.
Battery Charger Fault			Warning
Battery Voltage High	Battery Voltage High	Engine starting battery voltage rises above 125% of the battery voltage setting for more than 10 seconds; inhibited during crank cycle.	Warning	Check the battery rating and condition; check the battery charger operation.
Battery Voltage Low	Battery Voltage Low	Engine starting battery voltage falls below the battery voltage setting (typically 12.5 volts) for more than 90 seconds when engine not running; inhibited during crank cycle.	Warning	Check the battery rating and condition; check the battery charger operation; charge or replace the battery.
Cabinet Intrusion Alarm			Warning
CAN comm fault	CAN Communications Fault	Engine CAN communications fault.	Shutdown	Check wiring to ECM; check power to ECM.
Coolant Pressure	Low		Warning
Cranking Voltage	Low		Warning
ECM Communication Loss			Shutdown
ECM Model Mismatch			Shutdown
Electrical Metering Communication Loss			Shutdown
Emergency Stop			Shutdown
Engine Coolant Level	Low		Shutdown
Engine Coolant Temperature	Low		Warning
Engine Coolant Temperature High	Engine Coolant Temperature High	Engine coolant temperature exceeds the maximum temperature for more than 5 seconds; active after crank disconnect.	Shutdown	Check for blocked air inlets and exhaust outlets.
Engine Derate Active			Warning
Engine Fuel Level	Low		Warning
Engine Oil Level	Low		Warning
Engine Oil Pressure	Shorted High		Warning
Engine Oil Pressure Low	Engine Oil Pressure Low	Engine ECM indicates low oil pressure for more than 5 seconds; active 30 seconds after crank disconnect.	Shutdown	Check for leaks in the lubrication system; check the oil level and add oil if low.
EngineSpeed High	Engine Speed High	Engine speed exceeds 115% of normal running speed for more than 0.3 seconds.	Shutdown	Contact an authorized distributor/dealer for service.
EngineSpeed Low	Engine Speed Low	Engine speed drops below 85% of normal running speed for more than 3 seconds.	Shutdown	Reduce the load; contact an authorized distributor/dealer for service.
Exer Not Sch	Exercise Not Scheduled	No exercise has been scheduled on the RDC2 controller.	Warning	See exerciser setup instructions.
Failure To Synchronize			Warning
Fuel Pressure	Low		Warning
Fuel Tank Leak			Warning
Fuel Temperature	High		Warning
Gen Battery Voltage	Low		Warning
Generator Frequency	Low		Warning
Generator Frequency High	Generator Frequency High	Governed frequency exceeds 110% of the system's frequency setpoint for more than 10 seconds; active 10 seconds after engine start.	Shutdown	Contact an authorized distributor/dealer for service.
Generator Frequency Low	Generator Frequency Low	Governed frequency falls below 90% of system frequency setting for more than 10 seconds, or 1 Hz below setting for more than 60 seconds; active 10 seconds after engine start.	Shutdown	Reduce the load and restart the generator set; contact an authorized distributor/dealer for service.
Generator Voltage L1-L2	Low		Shutdown
Generator VoltageL1-L2 High	Generator Voltage High	Output voltage exceeds 120% of the system nominal voltage for more than 2 seconds.	Shutdown	Contact an authorized distributor/dealer for service.
Generator VoltageL1-L2 Low	Generator Voltage Low	Output voltage falls below 80% of the nominal system voltage for more than 10 seconds.	Shutdown	Reduce the load and restart the generator set; contact an authorized distributor/dealer for service.
Ground Fault Input			Warning
Injector Wiring Fault			Warning
Intake Air Temperature	High		Warning
Lo Crank Vlt	Low Cranking Voltage	Battery voltage falls below 60% of system battery voltage for more than 6 seconds while the starter is engaged.	Warning	Charge or replace the battery.
Locked Rotor	Locked Rotor	No engine rotation is sensed during cranking; shuts down 3 seconds after the fault is detected.	Shutdown	Check the battery; check for loose connections; contact an authorized distributor/dealer for service.
MainPwrOverL Shutdown	Main Power Overload	An over current fault on the controller power output (short circuit).	Shutdown	Contact an authorized distributor/dealer for service.
Maximum Alternator Current	Low		Shutdown
Not in Auto	Not in Automatic Mode	The generator set is not in Automatic (standby) mode; remote start/stop commands from a transfer switch or remote switch will be ignored.	Warning	Press AUTO to place the generator set in Automatic mode, when appropriate.
Not In Auto			Warning
Over Crank	Over Crank	Three unsuccessful starting attempts.	Shutdown	Check the fuel supply, spark plug, and battery; check for loose connections; contact an authorized distributor/dealer for service.
Reserve Oil Empty			Warning
Run Relay Coil Overload			Shutdown
Speed Sensor Fault	Speed Sensor Fault	Engine speed sensor has failed or engine stalled.	Shutdown	Contact an authorized distributor/dealer for service.
Starter Relay Coil Overload			Shutdown
System Frequency	High		Warning
System Voltage	High		Warning
Total Power (Generator Total Real Power)	Low		Warning
Total Power High ShtDwn	Total Power High Shutdown	Measured load is greater than 102% of the generator set power rating for more than 1 minute (38RCL only).	Shutdown	Reduce the load.
Total Reactive Power	Low		Warning
Water In Fuel			Warning

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

Calibration adjustment

⚠ Copying personality profiles from one controller to another can overwrite calibration coefficients and requires re-calibration.

Tools: Calibrated multimeter with recent calibration verification

Use a calibrated multimeter to measure the generator voltage and enter the correct value in the CONTROLLER CONFIG -> CALIBRATION screen.
Use a calibrated multimeter to measure the bus voltage and enter the correct value in the CONTROLLER CONFIG -> CALIBRATION screen.

Electric Brake Adjustment adjustment

⚠ Never use compressed air to clean brake components; some components may contain asbestos.

Tools: Adjustment tool or large slotted screwdriver, Jack stands

Raise the trailer with wheels off the ground and block safely with jack stands; remove the wheel.
Remove the rubber plug from the backing plate slot.
Insert an adjustment tool or large slotted screwdriver in the slot and rotate the star wheel to expand the shoe against the drum.
Expand the shoe until the drum can't be turned by hand to center each shoe.
Back off the adjustment in the other direction until the drum turns freely with slight resistance.
Replace the rubber plug in the backing plate slot.
Repeat procedure for remaining wheels.

RDC2 Voltage Calibration Using SiteTech adjustment

Tools: digital voltmeter, personal computer, SiteTech software

Connect PC to controller via USB
With generator off, connect multimeter across L1/L2 (AC volts)
Start generator set
Compare voltmeter reading to controller display
Calculate new Genset Calibration Factor Voltage using (Vmeter / Vcontrol) x Fold = Fnew
Enter new value into SiteTech and click Apply Changes
Verify voltmeter matches controller display
Repeat for L2-L3 and L3-L1 if three-phase
Press OFF to stop generator set

RDC2 Voltage Calibration Using the Controller Keypad adjustment

Tools: digital voltmeter

With generator off, connect digital multimeter across L1 and L2, set to AC volts
Start generator set with RUN button
Navigate to Generator Metering menu, press Select; Volts L1-L2 displayed
Press Select; voltage number flashes
Use up/down arrows to match voltmeter reading
Press Select to confirm
Step to Return screen
Press OFF to stop generator set

VSC Current (Load) Calibration Using the Controller Keypad adjustment

Tools: clamp-on DC current probe or DC current meter

Connect DC current probe/clamp meter to measure generator current
Start generator with RUN button
Adjust system voltage to obtain rated current output with battery bank attached (or use load bank)
Trip output breaker
Navigate to Generator Metering menu, select Generator Load
Press and hold Select for No-Load Calibration; verify breaker open, confirm Yes
Close output breaker; verify rated output current, confirm Yes
Verify displayed load is correct; recalibrate if necessary
Press OFF to stop generator set

Obtain DC2 Controller Password and Serial Number diagnostic

Press OFF and verify that the generator set is not running.
Press and hold the Exercise button until Press Again to Reset OnCue Plus PW is displayed.
Release the Exercise button and press it again within 5 seconds.
Write down the serial number (S/N) and password.

Obtain RDC/DC Controller Password diagnostic

Press OFF to place the controller into OFF mode.
Press the down arrow button (RDC) or exercise button (DC) 5 times.
Note the four-digit code displayed on the controller; this is the controller password.
Write down the password and press OFF to clear the display.

Obtain RDC2 or VSC Controller Password and Serial Number diagnostic

Press the controller down arrow button to navigate to the Networking Information menu.
Follow the reset password procedure shown in Figure 1-3.
Write down the serial number (S/N) and password displayed for 10 seconds.

Power Cycle the Controller diagnostic

Disconnect all input power for two minutes to allow capacitors to discharge.
Remove the battery negative cable or disconnect P1 from the back of the controller.
Disconnect the battery charger 120 VAC input power supply or disconnect P5 from the back of the controller.
Unplug the USB mini-B connector from the front of the controller if plugged in.
Wait two minutes, then reconnect power, hooking up battery power (P1) first.

Procedure to Reset the Controller after a Fault Shutdown diagnostic

⚠ Always identify and correct the cause of a fault shutdown before resetting the controller.

Press the Select button to go to the Overview menu.
Press Select again to display the active fault.
Press Select; Confirm Clear Fault: NO is displayed.
Press the Up arrow button; Confirm Clear Fault: YES is displayed.
Press the Select button to enter YES and clear the fault.
Press the Select button to return to the overview menu.
Press AUTO to put the generator set into automatic mode.

Use Telnet to Check Server Connection diagnostic

Tools: Command prompt, Telnet Client

Activate Telnet Client on the computer if necessary.
Open a command prompt window.
Enter telnet devices.kohler.com 5253.
Successful connection displays the symbols shown in Figure 3-8.

Verify Generator Operation diagnostic

⚠ Generators must all operate at the same frequency, voltage, and phase connection in order to parallel.

Tools: SiteTech software

Ensure the load is not connected or is drawing less power than a single generator can provide.
Navigate to CONTROLLER CONFIG -> COMMUNICATION SETUP and verify PGEN Nodes Online indicates the correct number of nodes.
Verify alternator connection (voltage selector switch position), system voltage, and voltage regulator target on each generator.
Start a single generator by pressing the Run button; the paralleling box contactor should close and the Generator Connected to Bus indicator should light.
Verify bus and generator voltages match and generator to bus phase angle is between -10 and 10 degrees.
Verify the load bus is energized and available at the load.
Stop the generator by pressing the OFF button; the contactor should open.
Repeat for each generator in the paralleling system.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Voltage reconnection

Voltage	Phase	Connection	Leads	Notes
		12-Lead		Alternator Reconnections diagram ADV-5875B-M (page 16)
		12-lead optional voltage connections	12	Alternator optional feature
		4-Lead		Alternator Reconnections diagram ADV-5875A-M (page 15)
		4-lead dedicated voltages	4	Alternator standard feature
	1	Camlocks (left to right)	Green=GND; White=L0; Black=L1; Red=L2	Single-phase uses four camlocks
	3	Camlocks (left to right)	Green=GND; White=L0; Black=L1; Red=L2; Blue=L3	Three-phase uses all five camlocks
100/200	1	Single
100/200	3	Delta
110/127/139/240/254/277	single-phase	switchable		Towable generator model specifications; some models n/a
110/220	1	Single
110/220	3	Delta
115/230	1	Single
120	1	Single		Genset System Voltage/Frequency/Phase table for controller setup
120/208	3	4P7BX 12-lead	12	Three-phase
120/208	3	Low wye	L0-L1: 120; L1-L2: 208; L1-L3: 208; L2-L3: 208	Voltage selector switch position Low wye; selector switch factory set Pos. 2 Volts 120/208, 60 Hz, Three Phase Wye
120/208	3	Wye
120/240	1	4Q7BX 4-lead	4	Single-phase
120/240	1	Single
120/240	1	Single-phase	L0-L1: 120; L1-L2: 240	Voltage selector switch position Single-phase; selector switch factory set Pos. 3 Volts 120/240, 60 Hz, Single Phase Dogleg (3-position switch only)
120/240	3	Delta
127/220	3	4P7BX 12-lead	12	Three-phase
127/220	3	Wye
208/220/240/415/440/480	3-phase	reconnectable		Towable generator model specifications
208/220/240/415/440/480	3-phase	switchable		Towable generator model specifications
220	1	Single
220/380	3	Wye
230	1	Single
230/400	3	Wye
240	1	Single
240/416	3	Wye

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What is the oil capacity of the General Motors Industrial Powertrain Vortec 5.0 L?

The General Motors Industrial Powertrain Vortec 5.0 L engine has an oil capacity of 4.7 liters.

What is the displacement of the General Motors Industrial Powertrain Vortec 5.0 L?

The General Motors Industrial Powertrain Vortec 5.0 L has a displacement of 5.0 liters with 8 cylinders.

Which generators use the General Motors Industrial Powertrain Vortec 5.0 L engine?

The General Motors Industrial Powertrain Vortec 5.0 L powers 6 generator set(s), including Kohler 48RCL, Kohler 48RCL-LPG, Kohler 48RCL-NG, Kohler 50REZG, Kohler 50RZG.

What is a common problem with the General Motors Industrial Powertrain Vortec 5.0 L engine?

A commonly reported issue on generators using the General Motors Industrial Powertrain Vortec 5.0 L is: Does not crank. Cause: Controller and Emergency Stop Switch.