2014 MACK GU
0 recalls, 1 complaints - 303 TSBs
No recalls found for this vehicle.
Complaint Statistics
1 total complaints
1 crashes 1 injuries
Top Reported Components
| Component | Complaints |
|---|---|
| POWER TRAIN | 1 |
POWER TRAIN
Feb 16, 2021
Incident date: Nov 27, 2019
THE DRIVE SHAFT OF THIS TRUCK FELL OFF ON NORTHBOUND I-95 WHILE IT WAS DRIVING.*DT*JB
Crash
1 injured
Technical Service Bulletins, 2014 MACK GU
303 manufacturer communications from 187 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.
Most Affected Components
| Component | Bulletins |
|---|---|
| 060000 ENGINE AND ENGINE COOLING | 46 |
| 110000 ELECTRICAL SYSTEM | 31 |
| 100000 POWER TRAIN | 28 |
| 350000 EQUIPMENT | 25 |
| 060000 ENGINE (PWS) | 22 |
| 118000 ELECTRICAL SYSTEM:SOFTWARE | 15 |
| 020000 SUSPENSION | 13 |
| 063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL | 8 |
CBR-1008 202404
Apr 22, 2024
100000 POWER TRAIN
CBR: Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value In VDA And Default Settings Guidelines, ParameterP1AOB; Fault Code P1052-54, Error 40,Or Error 18 Encountered During Clutch Or Tran.
CBR-2350 202402
Feb 21, 2024
110000 ELECTRICAL SYSTEM
CBR -Telematics Gateway (TGW) Connect Ability Issues
CBR-2347 202402
Feb 16, 2024
110000 ELECTRICAL SYSTEM
CBR - Active "Set Park Brake" Message On Drivers Information Display (DID).
CBR-202 202402
Feb 16, 2024
100000 POWER TRAIN
CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.
CBR-2014 202402
Feb 16, 2024
020000 SUSPENSION
CBR - Driveline Noise, Suspension Ride Height Too High, Suspension Will Not Exhaust - Chassis Built 2016w01 And Newer.
CBR-2333 202401
Jan 18, 2024
110000 ELECTRICAL SYSTEM
CBR: TGW Will Not Connect After SIM Card Replacement
CBR-2320 202312
Dec 1, 2023
060000 ENGINE AND ENGINE COOLING
CBR: For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left side of the engine may move excessively and rub the area where it secures the line.
EC0028M 202312
Dec 1, 2023
980000 UNKNOWN OR OTHER
Emissions Campaign: Mack Trucks has determined that certain 2014 - 2018 commercial model year CXU, GU, LEU, LR, MRU Vehicles require a replacement Diesel Particulate Filter (DPF) along with updated software.
EC0028M 202312
Dec 1, 2023
060000 ENGINE AND ENGINE COOLING
Emissions Campaign: Mack Trucks has determined that certain 2014 - 2018 commercial model year CXU, GU, LEU, LR, MRU Vehicles require a replacement Diesel Particulate Filter (DPF) along with updated software.
M-465-001 202311
Nov 7, 2023
100000 POWER TRAIN
TSB: Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. The new HD shaft went into production on January 23rd, 2023 for 2.54 - 3.50 axle ratios and April 1st, 2023 for 3.56 - 3.
CBR-995 202310
Oct 19, 2023
117000 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
CBR: Telematics Gateway ( TGW, MID 142 ) Losing Communication With The Instrument Cluster ( IC ) - Counts Of Fault Code (FC) MID 140 PSID 239 FMI 12 Data Link, MID 142 Faulty Device or Component Logging, Possibly Following Engine Start.
CBR-995 202310
Oct 19, 2023
110000 ELECTRICAL SYSTEM
CBR: Telematics Gateway ( TGW, MID 142 ) Losing Communication With The Instrument Cluster ( IC ) - Counts Of Fault Code (FC) MID 140 PSID 239 FMI 12 Data Link, MID 142 Faulty Device or Component Logging, Possibly Following Engine Start.
M-258-014 202309
Sep 5, 2023
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
TSB: Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
M-258-014 202309
Sep 5, 2023
060000 ENGINE AND ENGINE COOLING
TSB: Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
M-141-001 202308
Aug 18, 2023
060000 ENGINE AND ENGINE COOLING
TSB: Air Restriction Indicator
M728-005A 202308
Aug 14, 2023
020000 SUSPENSION
TSB: Barksdale Leveling Valve, Leak Test
CBR-2112 202307
Jul 24, 2023
110000 ELECTRICAL SYSTEM
CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
CBR-2112 202307
Jul 24, 2023
100000 POWER TRAIN
CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
CBR-2112 202307
Jul 24, 2023
060000 ENGINE AND ENGINE COOLING
CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission
CBR-2303 202307
Jul 1, 2023
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
CBR: Mack DEF Dosing Valve Diagnostic Trouble Codes (DTC) P202D00, P208E00, P103B00 - US10+OBD13 And Newer Emissions
CBR-2303 202307
Jul 1, 2023
060000 ENGINE AND ENGINE COOLING
CBR: Mack DEF Dosing Valve Diagnostic Trouble Codes (DTC) P202D00, P208E00, P103B00 - US10+OBD13 And Newer Emissions
SLM23-005
May 31, 2023
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
Service Literature Published and Released in May, 2023
KC-503-Ver3
May 17, 2023
100000 POWER TRAIN
CBR: Automated Manual Transmission ( AMT ) -Transmission Electronic Control Unit ( TECU ) MID130 PSID 29 FMI 7 /P10AE81 Fault Codes Being Generated
KC-2229-Ver2
May 10, 2023
100000 POWER TRAIN
CBR: Automated Manual Transmission (AMT) Transmission Kickdown Mode
KC-474-Ver5
May 2, 2023
100000 POWER TRAIN
CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
M-170-003
Apr 18, 2023
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
TSB: Vibration Diagnostics
M-170-001
Apr 18, 2023
355200 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
TSB: Stock Vehicle Storage and Maintenance
KC-2248
Feb 21, 2023
100000 POWER TRAIN
Flywheel Housing Thread Repair
KC-2248
Feb 21, 2023
060000 ENGINE AND ENGINE COOLING
Flywheel Housing Thread Repair
M-852-001
Dec 14, 2022
020000 SUSPENSION
2007 document reformatted to be published as a TSB in Impact. Lateral cab movement bracket.
M-728-001
Sep 22, 2022
020000 SUSPENSION
2008 Document reformatted to be published as a TSB in Impact. Air suspension ride height.
M-265-002
Sep 22, 2022
060000 ENGINE AND ENGINE COOLING
TSB-Charge Air Cooler t-clamp install.
M-411-001
Sep 21, 2022
040000 SERVICE BRAKES, AIR
2008 Document reformatted to be published as a TSB in Impact. Two-Piece clutch brake.
M-823-002
Sep 21, 2022
160000 STRUCTURE
2008 Document reformatted to be published as a TSB in Impact. Grille bar, replacment.
M-874-002
Sep 21, 2022
100000 POWER TRAIN
2008 Document reformatted to be published as a TSB in Impact. HVAC fine particulate filter.
M-222-001
Sep 15, 2022
060000 ENGINE AND ENGINE COOLING
2008 Document reformatted to be published as a TSB in Impact. Loose oil filter spud.
M-260-001
Sep 15, 2022
060000 ENGINE AND ENGINE COOLING
2008 Document reformatted to be published as a TSB in Impact. Cooling system connections.
M-801-001
Sep 15, 2022
160000 STRUCTURE
2008 Document reformatted to be published as a TSB in Impact. Paint protection.
M-652-002
Sep 15, 2022
020000 SUSPENSION
2008 Document reformated to be published as a TSB in Impact. Torque rod interference.
M-823-001
Sep 15, 2022
160000 STRUCTURE
2008 Document reformated to be published as a TSB in Impact. Field repair for installing the grill.
M-374-001
Sep 15, 2022
110000 ELECTRICAL SYSTEM
2008 Document reformated to be published as a TSB in Impact. Revised battery ti battery cable
M-255-016
Aug 19, 2022
060000 ENGINE AND ENGINE COOLING
2009 Document reformatted to be published as a TSB in Impact. Turbo Actuator Connector Repair.
M-451-002
Aug 6, 2022
020000 SUSPENSION
2009 Document reformatted to be published as a TSB in Impact. Axle Carrier Pinion Angles
M-263-002
Jun 30, 2022
060000 ENGINE AND ENGINE COOLING
2008 document reformatted to be published as a TSB in Impact. Fan Ring clearance for GU Model Truck.
KC-750
Jun 28, 2022
060000 ENGINE AND ENGINE COOLING
US10 Emission Engines - Diagnostic Trouble Code ( DTC ) SPN 1231 FMI 9 Troubleshooting.
KC-751
Jun 28, 2022
100000 POWER TRAIN
Vehicles Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F ) - Transmission Oil Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer.
KC-745
Jun 22, 2022
100000 POWER TRAIN
Automated Manual Transmission ( AMT ) I-Shift / mDRIVE - Ribbon Harness Replacement - Speed Sensor Bolts, Possible Fault Codes P1058 - 21 Or MID 130 PID 161 FMI 1
KC-2112
Jun 21, 2022
110000 ELECTRICAL SYSTEM
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-2112
Jun 21, 2022
100000 POWER TRAIN
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-2112
Jun 21, 2022
060000 ENGINE AND ENGINE COOLING
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-2143
Jun 21, 2022
180000 VEHICLE SPEED CONTROL
(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).
KC-405
Jun 21, 2022
100000 POWER TRAIN
Warranty Automated Manual Transmission ( AMT, I-Shift, mDrive ) Control Housing Assembly; Guidelines For Filing A Claim For Chassis Return Visit With Transmission Issues After A Repair Requiring Control Housing Removal And Reinstallation -
KC-735
Jun 6, 2022
350000 EQUIPMENT
Premium Tech Tool (PTT) - Message For Data Mismatch, Product Configuration Mismatch; Instruction To Run An Accessory Kit Displayed When Attempting To Run Diagnostics For Diagnostic Trouble Codes (DTC) Or Programming - US10+OBD13 And Newer E
KC-2116
Jun 3, 2022
060000 ENGINE AND ENGINE COOLING
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions.
KC-2158
Jun 3, 2022
060000 ENGINE AND ENGINE COOLING
Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions.
KC-2165
Jun 3, 2022
060000 ENGINE AND ENGINE COOLING
DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions.
KC-731
May 27, 2022
100000 POWER TRAIN
Mack Chassis - Equipped With An Automated Manual Transmission Model D or F (mDrive, AMT-D, AMT-F) - Transmission Oil Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And New
KC-2165
May 26, 2022
060000 ENGINE AND ENGINE COOLING
DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-2116
May 26, 2022
060000 ENGINE AND ENGINE COOLING
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-2131
May 26, 2022
060000 ENGINE AND ENGINE COOLING
USE FOR NEW VEHICLES (US21+OBD22 Emissions) - Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E
KC-2158
May 26, 2022
060000 ENGINE AND ENGINE COOLING
Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-2171
May 26, 2022
060000 ENGINE AND ENGINE COOLING
Temperature Sensor Troubleshooting Guide - US10+OBD13 And Newer
KC-714
May 25, 2022
060000 ENGINE AND ENGINE COOLING
Mack Chassis - Diagnostic Trouble Codes ( DTC's ) - P020113, P020213, P020313, P020413, P020513, P020613, Cylinders 1 Through 6 Injector A Open Circuit
KC-698
May 24, 2022
060000 ENGINE AND ENGINE COOLING
Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After DEF Pump Failure Or System Contamination
KC-699
May 24, 2022
110000 ELECTRICAL SYSTEM
Mack Chassis - Bendix Vendor Configuration Program ( VCP ) Software Download Information
KC-686
May 20, 2022
180000 VEHICLE SPEED CONTROL
(Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
KC-686
May 20, 2022
251000 ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)
(Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
KC-663
May 18, 2022
060000 ENGINE AND ENGINE COOLING
Emcon (Spark Assist) Engine Aftertreatment System Troubleshooting Check Sheet - US07 Emissions
KC-644
May 17, 2022
060000 ENGINE AND ENGINE COOLING
Manual Compression Test Adapter For Engines With Stainless Steel Injector Sleeves (Conical Tip Injectors) - US07 And Newer Emissions, Model Year 2008 And Newer
KC-648
May 17, 2022
980000 UNKNOWN OR OTHER
Mack - PTO Pump Speed Calculator
KC-648
May 17, 2022
100000 POWER TRAIN
Mack - PTO Pump Speed Calculator
KC-652
May 17, 2022
060000 ENGINE AND ENGINE COOLING
Mack Low Oil Pressure Diagnostic Process For 11 Liter Engines
KC-2170
May 16, 2022
020000 SUSPENSION
Electronically Controlled Suspension (ECS) Losing Air Pressure
KC-2169
May 16, 2022
110000 ELECTRICAL SYSTEM
Low Voltage Disconnect (LVD), Function Description
KC-2172
May 16, 2022
110000 ELECTRICAL SYSTEM
No Start Condition After Over The Air Programing - VECU5 No Start "Safe State"
KC-2172
May 16, 2022
980000 UNKNOWN OR OTHER
No Start Condition After Over The Air Programing - VECU5 No Start "Safe State"
KC-2161
May 13, 2022
060000 ENGINE AND ENGINE COOLING
DEF Pump Cycling periodically Hours After Key Off
KC-633
May 13, 2022
200000 WHEELS
Mack Chassis - Front Hub With Unit-Bearings ( Unitized Wheel Bearings ), Inspection Information And Guidelines - Commonly Model Year 2008 And Newer
KC-627
May 9, 2022
350000 EQUIPMENT
Premium Tech Tool ( PTT ) Training Materials And Support Tools
KC-626
May 9, 2022
100000 POWER TRAIN
Mack Chassis - Vehicles Equipped With An Automated Manual Transmission Model F ( AMT-F, mDrive ), Premium Tech Tool ( PTT ) Gearbox Calibration Failure; Gearbox Calibration Operation Stops And Fails At 33% When Run With Transmission Removed
KC-629
May 9, 2022
350000 EQUIPMENT
Mack SNM14-038 When And How To Contact Tech Support ( eService & Phone )
KC-916
May 3, 2022
353400 EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.
Mack Chassis - Replacement / Upgrade Of The Programmable Global Audio ( GLAD ) Radio With A Non-programmable Radio
KC-916
May 3, 2022
350000 EQUIPMENT
Mack Chassis - Replacement / Upgrade Of The Programmable Global Audio ( GLAD ) Radio With A Non-programmable Radio
KC-611
Apr 28, 2022
350000 EQUIPMENT
Mack SNM14-015 " Revised " Alternative Towing Procedures For m-DRIVE Equipped Chassis
KC-610
Apr 28, 2022
350000 EQUIPMENT
Mack Delphi Radio Theftlock Code Generator
KC-257
Mar 18, 2022
350000 EQUIPMENT
Volvo Chassis - FSB 237 - 020, Unit Injector Yoke Hold - Down Bolt Torque Specification
KC-257
Mar 18, 2022
060000 ENGINE AND ENGINE COOLING
Volvo Chassis - FSB 237 - 020, Unit Injector Yoke Hold - Down Bolt Torque Specification
KC-826
Mar 16, 2022
060000 ENGINE AND ENGINE COOLING
Volvo Chassis - Crankcase Ventilation ( CCV ) Oil Leaks - Technical Service Bulletin M-257 - 004, Technical Service Bulletin M-257 - 006 - US14 And US15 Emissions
KC-561
Feb 22, 2022
060000 ENGINE AND ENGINE COOLING
Engine Oil Analysis Specifications - US10 And Newer Emissions
KC-552
Feb 22, 2022
060000 ENGINE AND ENGINE COOLING
Aftertreatment Control Module ( ACM ) Diagnostic Trouble Codes ( DTC ) U0001-88 and U0010-88 Lighting The Malfunction Indicator Lamp ( MIL ); Possible Derate Warning a?? US10 And Newer Chassis
KC-495
Feb 16, 2022
110000 ELECTRICAL SYSTEM
Intake Pre-heater Electrical Schematics (Diagrams) - US10+OBD13, US14+OBD13 To US14+OBD16 Emissions
KC-495
Feb 16, 2022
060000 ENGINE AND ENGINE COOLING
Intake Pre-heater Electrical Schematics (Diagrams) - US10+OBD13, US14+OBD13 To US14+OBD16 Emissions
KC-492
Feb 16, 2022
063110 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)
Diagnostic Trouble Code (DTC) P04DB - Crankcase Ventilation Disconnected; US10+OBD13 To US14+OBD16 Emissions
KC-492
Feb 16, 2022
060000 ENGINE AND ENGINE COOLING
Diagnostic Trouble Code (DTC) P04DB - Crankcase Ventilation Disconnected; US10+OBD13 To US14+OBD16 Emissions
KC-2157
Feb 10, 2022
060000 ENGINE AND ENGINE COOLING
Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-2157
Feb 10, 2022
980000 UNKNOWN OR OTHER
Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-478
Jan 26, 2022
060000 ENGINE AND ENGINE COOLING
Variable Geometry Turbocharger ( VGT ) Function Test ( 2551-08-03-02 ), OBD13 Model Year ( MY ) 2014 And Newer
KC-450
Jan 21, 2022
063100 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
Diagnostic Trouble Codes ( DTC ) P20EE, P207F And P103C, Diagnostic Procedure - REPLACES GUIDED DIAGNOSTICS IN PREMIUM TECH TOOL ( PTT ) - US10+OBD2013 to US14+OBD2016 (Non-Common Rail) Emissions, Commonly Model Years 2014 To 2017
KC-450
Jan 21, 2022
060000 ENGINE AND ENGINE COOLING
Diagnostic Trouble Codes ( DTC ) P20EE, P207F And P103C, Diagnostic Procedure - REPLACES GUIDED DIAGNOSTICS IN PREMIUM TECH TOOL ( PTT ) - US10+OBD2013 to US14+OBD2016 (Non-Common Rail) Emissions, Commonly Model Years 2014 To 2017
KC-415
Jan 20, 2022
060000 ENGINE AND ENGINE COOLING
Diagnostic Trouble Code ( DTC ) P26E8 Intermittently Lighting The Malfunction Indicator Lamp ( MIL ); Possible Derate Warning - US10+OBD13 And Newer Emissions, Model Year 2014 And Newer
Showing 100 of 303 bulletins.
MACK GU - All Years Overview
Complete safety history for the MACK GU across all model years (2007, 2011).
27
Total Recalls
9
Total Complaints
0
Investigations
1
Reported Crashes
0
Reported Fires
0
Reported Deaths