Service parts for the GGLA
Grouped by system, with how many of each the parts manual calls for.
Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Natural Gas |
|---|---|
| Controller | PowerCommand 2100 (PCC) |
| Oil capacity | 7.6 L |
| Voltage options | 12 V |
| Battery group | 31 |
| Battery cranking | 455 CCA |
| Battery voltage | 12 V |
| Coolant capacity | 22.3 L |
Maintenance & consumables
for the General Motors GM8.1L| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | — | ||||
| Oil filter | Filter, Oil (Fleetguard) (Not Shown) | LF16109 | eBay NAPA $3.59 | ||
| Battery | Ground Voltage: 12 Volts, Group Number: 31, Minimum Rating (Cold Soak): 455 CCA @ 0° F (-18° C) | — | |||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | Check the engine oil level. Keep the oil level near as possible to the dipstick high mark without overfilling. | — | |||
| Spark plug | — |
Common questions
What engine does the Cummins/Onan GGLA use?
The Cummins/Onan GGLA is powered by the General Motors GM8.1L engine.
What fuel does the Cummins/Onan GGLA use?
The Cummins/Onan GGLA runs on Natural Gas.
What is the cooling system capacity of the Cummins/Onan GGLA?
The Cummins/Onan GGLA cooling system holds 22.3 liters (5.9 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
How much oil does the Cummins/Onan GGLA take?
The Cummins/Onan GGLA has an engine oil capacity of 7.6 liters (8.0 US quarts), per the manufacturer specification sheet.
What voltage does the Cummins/Onan GGLA produce?
The Cummins/Onan GGLA is offered in 12 V.
How many cold cranking amps does the Cummins/Onan GGLA require?
The Cummins/Onan GGLA uses 12 V each, 455 CCA, group 31, per the manufacturer specification sheet.
What oil filter does the Cummins/Onan GGLA use?
The Cummins/Onan GGLA uses oil filter part number LF16109.
Troubleshooting
85Fault codes
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| 143 | PRE-LOW OIL PRES — Lamp: Warning | Engine oil pressure has dropped to an unacceptable level | If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow code 415 procedure |
| 146 | PRE-HIGH COOL TMP — Lamp: Warning | Engine has begun to overheat (coolant temperature has risen to an unacceptable level) | Reduce load if possible by turning off non-critical loads; Check air inlets and outlets and remove any obstructions to airflow; If engine can be stopped, follow code 151 procedure |
| 151 | HIGH COOLANT TEMP — Lamp: Shutdown | Engine has overheated (coolant temperature has risen above the shutdown trip point) | Allow engine to cool down completely before proceeding with the following checks: Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary; Check for obstructions to cooling airflow and correct as necessary; Check fan belt and repair or tighten if necessary; Check blower fan and circulation pumps on remote radiator installations; Reset control and restart after locating and correcting problem |
| 197 | LOW COOLANT LEVEL — Lamp: Warning (Optional) | Engine coolant level has fallen below the warning trip point | If generator is powering critical loads and cannot be shut down, wait until next shutdown period, then follow code 235 procedure; If engine can be stopped, follow code 235 procedure |
| 235 | LOW COOLANT LEVEL — Lamp: Shutdown (Optional) | Engine coolant level has fallen below the shutdown trip point | Allow engine to cool down completely before proceeding: Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary; Reset control and restart after locating and correcting problem |
| 359 | FAIL TO START — Lamp: Shutdown | Possible fuel system problem (engine cranks but fails to start) | Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required; Check for dirty fuel filter and replace if necessary; Check for dirty or plugged air filter and replace if necessary; Reset the control and restart after correcting the problem; See code 1311 (Page 4-7) and follow its procedures |
| 415 | LOW OIL PRESSURE — Lamp: Shutdown | Engine oil pressure has dropped below the shutdown trip point | Check oil level, lines and filters. If oil system is OK but oil level is low, replenish. Reset control and restart |
| 421 | OIL TEMP — Lamp: Warning (Optional) | Engine has begun to overheat (oil temperature has risen to an unacceptable level) | Reduce load if possible by turning off non-critical loads; Check air inlets and outlets and remove any obstructions to airflow; If engine can be stopped, follow code 151 procedure and also check engine oil level |
| 441 | LOW BAT VOLTAGE — Lamp: Warning | Battery voltage supply to the control is approaching a low level at which unpredictable operation will occur; Discharged or defective battery; Poor battery cable connections | Check the battery charger fuse. Recharge or replace the battery; Clean the battery cable terminals and tighten all connections; Check battery charge voltage float level if applicable (raise float level) |
| 442 | HIGH BAT VOLTAGE — Lamp: Warning | Battery voltage supply to the control is approaching a high level at which damage to the control can occur | Check float level on battery charger if applicable (lower float level) |
| 1311 | ENGINE SHUTDOWN — Lamp: Shutdown | The ECM, rather than the PCC, will cause engine shutdown if low oil pressure, high engine temperature, overspeed, or failure to start occurs, and will send a signal to the PCC to display ENGINE SHUTDOWN (Code 1311) | Look up the previous fault in PCC fault history to determine whether engine shutdown is the real cause for generator set shutdown; If the previous fault is ENGINE SHUTDOWN, use the engine fault code enable switch to determine the numerical ECM fault code; For ECM Fault Codes 115 (low oil pressure), 521 (low coolant level) and 123 or 124 (high coolant temperature) follow PCC Code 415, 235 and 151 corrective actions, respectively; All other ECM Fault Codes will require an authorized service representative to correct the fault. Contact an authorized service center for assistance |
| 1417 | POWER DOWN ERROR — Lamp: Warning | The controller can not power down because of some unknown condition. Possible drain on battery | Contact an authorized service center for service |
| 1433 | EMERGENCY STOP — Lamp: Shutdown | Local Emergency Stop | Pull the button out; Move the O/Manual/Auto switch to O; Press the front panel Fault Acknowledge/Reset button; Select Manual or Auto, as required |
| 1434 | REMOTE E-STOP — Lamp: Shutdown | Remote Emergency Stop | See code 1433 to reset |
| 1435 | LOW COOLANT TEMP — Lamp: Warning | Engine coolant heater is not operating or is not circulating coolant; Coolant heater not connected to power supply; low coolant level | Check for blown fuse 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 |
| 1438 | FAIL TO CRANK — Lamp: Shutdown | Possible fault with control, speed sensing or starting system | See code 441 for corrective action |
| 1442 | WEAK BATTERY — Lamp: Warning | During cranking, the battery voltage is at or below the weak battery warning trip point for a time greater than or equal to the weak battery set time | See code 441 for corrective action |
| 1443 | BATTERY FAILED — Lamp: Shutdown | Dead battery − engine will not start | See code 441 for corrective action |
| 2342 | TOO LONG IN IDLE — Lamp: Warning | Genset has been in Idle mode too long (10 minutes maximum) | |
| 121 | Speed Signal Lost — Shtdn | ||
| 135 | Oil Pressure Sensor H — Wrng | ||
| 141 | Oil Pressure Sensor L — Wrng | ||
| 144 | Coolant Sensor High — Wrng | ||
| 145 | Coolant Sensor Low — Wrng | ||
| 212 | Oil Temp Sensor H — Wrng | ||
| 213 | Oil Temp Sensor L — Wrng | ||
| 234 | Overspeed — Shtdn | ||
| 1122 | Rated/Idle Trans | ||
| 1123 | Shutdown After BS — Shtdn | ||
| 1124 | Delayed Shutdown — Wrng | ||
| 1131 | Battle Sh Active — Wrng | ||
| 1313-1316 | Network Fault 1 thru 4 — Shtdn/Wrng/None | ||
| 1334 | Crit Scaler OR — Shtdn | ||
| 1335 | Noncrit Scaler OR — Wrng | ||
| 1337 | No Message | ||
| 1416 | Fail To Shutdown — Wrng | ||
| 1444 | KW Overload — Wrng | ||
| 1445 | Short Circuit — Shtdn | ||
| 1446 | High AC Voltage — Shtdn | ||
| 1447 | Low AC Voltage — Shtdn | ||
| 1448 | Under Frequency — Shtdn | ||
| 1449 | Over Frequency — Wrng | ||
| 1452 | Gen CB Not Close — Wrng | ||
| 1453 | Gen CB Not Open — Wrng | ||
| 1459 | Reverse Power — Shtdn | ||
| 1461 | Loss Of Field — Shtdn | ||
| 1466 | Modem Failure — Wrng | ||
| 1468 | Network Error — Wrng | ||
| 1469 | Speed/Hz Match — Shtdn | ||
| 1471 | Over Current — Wrng | ||
| 1472 | Over Current — Shtdn | ||
| 2323-2326 | Network Fault 5 thru 8 — Shtdn/Wrng/None | ||
| 2327 | PTC Fault — Wrng | ||
| 2329 | Low S1 Frequency — Wrng | ||
| 2331 | Low S1 Voltage — Wrng | ||
| 2335 | Excitation Fault — Shtdn | ||
| 2336 | Memory Error — Shtdn | ||
| 2337 | Pwr Tran Disabled — Wrng | ||
| 2338 | Pwr Tran Failure — Wrng | ||
| 2339 | Pwr Down Enabled — Wrng | ||
| 2341 | High Control Temp — Wrng | ||
| 2358 | High S1 Voltage — Wrng | ||
| 2396 | S1 CB Not Close — Wrng | ||
| 2397 | S1 CB Not Open — Wrng | ||
| 2966 | PTC Timeout — Wrng | ||
| 2967 | Governor Fault — Wrng | ||
| 2968 | AVR Fault — Wrng | ||
| 2969 | LON Failure — Wrng | ||
| 2972 | Field Overload — Shtdn | ||
| 115 | Oil Pressure Low | Check for low oil and add oil as necessary | |
| 521 | Low coolant level | Check for low coolant level and add coolant and repair leaks as necessary | |
| 261 | Low battery voltage | Clean and tighten battery cable connections at the set and at the battery; Recharge or replace the battery | |
| 123 | High coolant temperature | Check for low coolant level and add coolant and repair leaks as necessary; Remove obstructions to air flow; Open stuck air dampers; Service the engine cooling system | |
| 124 | High coolant temperature | Check for low coolant level and add coolant and repair leaks as necessary; Remove obstructions to air flow; Open stuck air dampers; Service the engine cooling system | |
| F1 | Engine fails to crank | Fuse F1 in the engine harness blown | Check Fuse F1 in the engine harness and replace if blown (15 amp) |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| CUSTOMER INPUT #1 − #4 — Lamp: Warning/Shutdown or none for status message | The nature of the fault is an optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, Low Starting Hydraulic Pressure, Low Starting Air Pressure, etc. | Each of the fault functions can be programmed (using service tool), as follows: Enable/disable input (Default: enable); Status, Warning or Shutdown (Default: #1−None, #2 thru #4−Warning); Active closed or open (Default: closed [ground]); Change display name using up to 19 characters (Default: #1− Customer Fault 1, #2−Ground Fault, #3−Low Fuel, #4−Rupture Basin Fault) |
| Engine fails to crank | Loose or dirty battery cable connections at the set and at the battery | Clean and tighten the battery cable connections at the set and at the battery |
| Engine fails to crank | Battery discharged or defective | Recharge or replace the battery. (Refer to the battery manufacturer's recommendations.) |
| Engine cranks but fails to start | Closed manual fuel valves | Open all closed manual fuel valves |
| Engine cranks but fails to start | Cause of the failure to start indicated by engine fault codes (Fault Code 115 low oil pressure, Fault Code 521 low coolant level, Fault Code 261 low battery voltage) | Press the engine fault code enable switch (Page 5-3) to determine the cause of the failure to start; If Fault Code 115 (low oil pressure), check for low oil and add oil as necessary; If Fault Code 521 (low coolant level), check for low coolant level and add coolant and repair leaks as necessary; If Fault Code 261 (low battery voltage): clean and tighten battery cable connections at the set and at the battery, recharge or replace the battery |
| Engine cranks but fails to start | Engine coolant heater not plugged in or installed | Plug in or install an engine coolant heater |
| The generator set runs but there is no electrical output | Tripped circuit breaker | Reset any tripped circuit breaker |
| The generator set runs but there is no electrical output | Circuit breaker keeps tripping due to excessive connected load | If a circuit breaker keeps tripping, run the set with fewer connected loads |
| The generator set runs but there is no electrical output | Fault in connected load circuits causing circuit breaker to trip right away | If a circuit breaker trips right away, have the connected load circuits repaired |
| The generator set starts but shuts down | Cause of the shutdown indicated by engine fault codes (Fault Code 115 low oil pressure, Fault Code 521 low coolant level, Fault Code 123 or 124 high coolant temperature) | Press the engine fault code enable switch (Page 5-3) to determine the cause of the shutdown; If Fault Code 115 (low oil pressure), check for low oil and add oil as necessary; If Fault Code 521 (low coolant level), check for low coolant level and add coolant and repair leaks as necessary; If Fault Code 123 or 124 (high coolant temperature): check for low coolant level and add coolant and repair leaks as necessary, remove obstructions to air flow, open stuck air dampers, service the engine cooling system |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
10| Part # | Description | Qty | System | |
|---|---|---|---|---|
| A028Z105 | Sender, Low Coolant | 1 | Sender | Amazon eBay |
| A029A407 | Gasket, Mixer to Adapter | 1 | Gasket | eBay |
| LF16109 | Filter, Oil (Fleetguard) (Not Shown) | 1 | Oil filter | eBay NAPA $3.59 |
| 963-0601 | PowerCommand Control (2100 Series) | 1 | Service part / kit | Amazon eBay |
| A026D979 | Converter, Catalytic | 1 | Service part / kit | eBay |
| A026E804 | Muffler | 1 | Service part / kit | eBay |
| A026F055 | Muffler | Service part / kit | eBay | |
| A026H163 | Regulator, Fuel | 1 | Service part / kit | eBay |
| A026H171 | Regulator, Fuel | 1 | Service part / kit | eBay |
| A026H951 | Control, Fuel | 1 | Service part / kit | eBay |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 163.53 | 43.2 | |
| Standby | 176.78 | 46.7 |
Available documents
Parts manual — 963-0201 Cummins GGLA GGLB Parts Manual (8-2016) (Cummins/Onan)Service manual — 963-0101 Cummins GGLA Operators Manual (12-2003) (Cummins/Onan)Service manual — 963-0601 Cummins GGLA Installation Manual (12-2003) (Cummins/Onan)
This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.