2011 Mack Gu technical service bulletins
239 technical service bulletins and manufacturer communications cover the 2011 Mack Gu.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- CBR -Telematics Gateway (TGW) Connect Ability Issues
- Cbr
- Cbr
- CBR: For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left...
- Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family...
- Air Restriction Indicator
- Barksdale Leveling Valve, Leak Test
- Service Literature Published and Released in May, 2023
- CBR: eWarranty To UCHP Labor Code ( SCC Code ) Crossover, Conversion Information For Use With Campaigns (...
- CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19
- Stock Vehicle Storage and Maintenance
- Vibration Diagnostics
- Flywheel Housing Thread Repair
- 2007 document reformatted to be published as a TSB in Impact
- TSB-Charge Air Cooler t-clamp install.
- 2008 Document reformatted to be published as a TSB in Impact
- 2008 Document reformatted to be published as a TSB in Impact
- 2008 Document reformatted to be published as a TSB in Impact
- 2008 Document reformatted to be published as a TSB in Impact
- 2008 Document reformated to be published as a TSB in Impact
- 2008 Document reformated to be published as a TSB in Impact
- 2008 Document reformated to be published as a TSB in Impact
- 2008 Document reformatted to be published as a TSB in Impact
- 2008 Document reformatted to be published as a TSB in Impact
- 2008 Document reformatted to be published as a TSB in Impact
- 2009 Document reformatted to be published as a TSB in Impact
- 2009 Document reformatted to be published as a TSB in Impact
- 2008 document reformatted to be published as a TSB in Impact
- Vehicles Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F )
- US10 Emission Engines
- Automated Manual Transmission ( AMT ) I-Shift / mDRIVE
- Warranty Automated Manual Transmission ( AMT, I-Shift, mDrive ) Control Housing Assembly; Guidelines For...
- (Back Office)
- Programming Failure
- Premium Tech Tool (PTT)
- DEF Pump Troubleshooting Guide
- Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide
- NOx Sensor Troubleshooting Guide
- Mack Chassis
- NOx Sensor Troubleshooting Guide
- Use for new vehicles (US21+OBD22
- Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide
- DEF Pump Troubleshooting Guide
- Temperature Sensor Troubleshooting Guide
- Mack Chassis
- Mack Chassis
- Mack Chassis
- (Back Office Only) Mack Chassis
- Emcon (Spark Assist) Engine Aftertreatment System Troubleshooting Check Sheet
- Mack
- Manual Compression Test Adapter For Engines With Stainless Steel Injector Sleeves (Conical Tip Injectors)
- Low Oil Pressure Diagnostic Process For 11 Liter Engines
- Low Voltage Disconnect (LVD), Function Description
- Electronically Controlled Suspension (ECS) Losing Air Pressure
- No Start Condition After Over The Air Programing
- Mack Chassis
- DEF Pump Cycling periodically Hours After Key Off
- Mack Chassis
- Premium Tech Tool ( PTT ) Training Materials And Support Tools
- Sensor And Parameter Value Monitor
- Mack Chassis
- Volvo Chassis
- Aftertreatment Hydrocarbon Injector (AHI) Troubleshooting Guide
- Aftertreatment Control Module ( ACM ) Diagnostic Trouble Codes ( DTC ) U0001-88 and U0010-88 Lighting The...
- Engine Oil Analysis Specifications
- System Date And Time, Information; Diagnostic Tool ( J-Pro, Premium Tech Tool ( PTT ) ) Displays Incorrect...
- Regen Fails to Start/Initiate Or Starts And Immediately Stops
- Diagnostic Trouble Code (DTC) P04DB
- Intake Pre-heater Electrical Schematics (Diagrams)
- Volvo Chassis
- Volvo Chassis
- Mack Chassis
- Mack Chassis
- Automated Manual Transmission (AMT) (Spigot Bearing) Input Shaft Repair Kit And Shim Kit, Part Number...
- Mack Chassis
- Mack Chassis
- Diesel Fuel Information
- Aftertreatment Control Module (ACM) Offline/Not Visible/Missing From Control Unit Information in Premium...
- Automated Manual Transmission Gearbox Will Not Shift To High Range After Gearbox Repair; MID 130 PSID 24...
- Lighting Control Module ( LCM ) Replacement
- Transmission Oil Cooler Hose, Replacement
- Reman Engine Label Replacement
- Electronic Control Unit (ECU) Replacement (EMS, VECU, TECU, LCM)
- Assembled Camshaft
- Mack Chassis
- Automated Manual Transmission (AMT) Faults
- Expired
- Diagnostic Trouble Code ( DTC ) P02FA Illuminating The Malfunction Indicator Lamp (MIL)
- Diagnostic Trouble Code ( DTC ) P0420 Illuminating The Malfunction Indicator Lamp (MIL)
- Diagnostic Trouble Code ( DTC ) P0471 Illuminating The Malfunction Indicator Lamp (MIL)
- Particulate Matter ( PM ) Sensor Diagnostic Trouble Codes ( DTC ) Illuminating The Malfunction Indicator...
- Diagnostic Trouble Code ( DTC ) P009E
- Fuel Injector Offset Learning Diagnostic Trouble Codes ( DTC ) / Fault Codes Logged In Engine Control...
- Diagnostic Trouble Code ( DTC ) P009E
- ECM and ACM Reprogramming, OBD2015
- Mack Chassis
- Automated Manual Transmission ( AMT
- Service Only Regen Requested With No Warning
- Engine Diagnostic Trouble Codes ( DTC's ) P24A0 And P249F Lighting The Malfunction Indicator Lamp ( MIL )
- Mack Chassis
- Mack Chassis
- Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction Indicator Light ( MIL )
- Diagnostic Trouble Code ( DTC ) P249C Intermittently Lighting The Malfunction Indicator Lamp ( MIL )
- Mack Chassis
- Expired
- Unit Injector Yoke Hold-Down Bolt Torque Specification
- Some Mack trucks equipped with mDrive transmissions built between September 6, 2010 and August 14, 2017...
- MACK CHU, CXU, GR, GU, and PI trucks built from 2009 to 2017 and equipped with MP7, MP8, and MP10 engines...
- MACK CHU, CXU, GR, GU, and PI trucks built from 2009 to 2017 and equipped with MP7, MP8, and MP10 engines...
- Certain GU trucks equipped with forward steer axles (18,000 lb rated front axles) and built before 2012,...
- In some instances the exhaust rocker piston cap screw may become loose and back out causing loss of engine...
- On some mack chu, cxu, gu, and td truck models built between 04/31/2008 and 05/12/2014, the solenoid valve...
- Battery cable lug, failure
- HVAC flange, installation, chu, cxu, gu, td.
- Diagnostic trouble codes (DTCS), low oil pressure, cxu, gu, leu, mru.
- Brake chamber replacement recall.
- Brake chamber replacement recall
- Grade gripper solenoid, replacement
- On some MACK CHU, CXU, GU, and TD truck models built between 04/31/2008 and 11/30/2015, the solenoid valve...
- On certain mack chu, cxu, gu, and td trucks built between 07/06/2009 through 09/26/2014, equipped with...
- Clutch Pedal Micro Switch Replacement
- Clutch Pedal Micro Switch Replacement.
- Summary to be provided on a future date.
- Oil pan sealing ring, replacement
- Diagnostic trouble codes (DTCS), low oil pressure
- Grade gripper solenoid, replacement
- Brake electronic control unit (ECU), reprogramming (mid 136) certain mack chu, cxu, and gu trucks equipped...
- Engine Brake Loss
- Engine brake loss
- EGR mass flow rate low
- Grade gripper quick release valve, replacement. on some mack chu, cxu, and gu trucks built between...
- Cab harness insulation, installation
- Vehicle electronic control unit (VECU), reprogramming, 5TH wheel slide.
- Grade gripper solenoid, replacement
- Vehicle electronic control unit (VECU), reprogramming fifth wheel slide
- Mack: when the output from the vecu gets shorted out to gnd, there is no warning and causes 5TH wheel to...
- Brake drum, replacement (steer axle) some mack cxu, chu, gu, and td trucks built between 08/29/2011 and...
- Mack: when suspension, on some trucks, is left dumped, there are no warning light, buzzer or road speed...
- Mack: brake shoes protrudes beyond brake drum and CAN be resolved by installing brake shoes 152MM (6.0 in)...
- Mack: the protrusion of brake shoes beyond brake drum is being replaced with new 152MM (6.0 in) brakes...
- Mack: when suspension is left dumped, no warning light, road speed limit or buzzer due to software in...
- Mack truck: mounted outside of frame rail, is new fuel tank ventilation filter mounting sleeve, using fuel...
- Mack truck: to increased protection against fuel injector tip erosion, a new fuel tank ventilation filter...
- Mack truck: the grade gripper feature, on some trucks, are prone to harsh environments with internal...
- Certain gu model chassisÂ’ equipped with haldex slack adjusters and ridewell suspension with build dates...
- Mack trucks: slack adjuster control arm
- Interference between the brake lining and the spring cap was discovered on some mack chu, cxu, gu, td,...
- Power wires, rerouting, certain mack chu, cxu, gu, and td truck models built between 01/01/07 and...
- Frame rail ground stud, on certain mack trucks built from 01/01/2010 to 10/7/2013 the main ground stud,...
- Some mack vehicles with mp engines built between january 2004 and january 2013 may experience a main oil...
- Mack trucks: improvement was made for protection for stackable batteries from environment to prevent...
- Mack truck: due to oil contamination into engine wire harness, main oil gallery pressure sensor or piston...
- Mack: on some trucks, more leg and knee room was provided for operator comfort due to air operated clutch...
- Mack: due to supplier manufacturing issue with connector, some trucks may experience multiple open...
- Mack: air disc brake experiencing thermal overload condition that over adjustment of normal pad wear...
- Some mack vehicles built between 2004 and october 2013 experience an oil level sensor failure that leads...
- Mack: on some trucks, oil contamination into engine wire harness, may be from oil level sensor failure and...
- Mack: the door stop bracket will fail, on some trucks, due to an over extension of door, but a new door...
- During long hard pull conditions, diagnostic trouble codes (DTC) spn 100 fmi 1 or P052400 CAN log on...
- The incompatibility of hose inside diameter and compressor fitting size has caused the compressor hoses to...
- Mack trucks: under certain conditions, some trucks may have experience regeneration service failures, that...
- Mack: fittings for current air compressor coolant hoses are not the same size at each end and...
- Mack: under certain conditions, higher than expected turbocharger wheel speed, uneven engine speed, low T2...
- The incompatibility of hose id and compressor fitting size has caused the compressor hoses to come...
- Mack truck: regarding the breaking or cracking, at starter solenoid stud, of 90 degree positive battery...
- Mack trucks: low oil pressure
- Mack truck: flashers are to be removed due to durability issues
- Mack trucks:due to excessive moisture in the climate unit, some vehicles may develop a blower motor failure
- Mack trucks: the air assisted clutch cable on some vehicles may fray at the clevis
- Mack trucks: new switch mounting bracket was developed to replace existing turn signal switch mounting...
- Mack trucks: there are four missing bolts in the engine frame and mount
- Radio replacement, some mack models built between june 28, 2010 to february 10, 2012, may experience a...
- Mack trucks: rear suspension adjustment washers
- Mack trucks: rear suspension hardware torque
- Battery cable mounting clamps, may experience the battery cable clamps breaking or cracking.
- Mack truck: torque issue and material may be causing battery cable clamps to crack or break
- Instrument cluster reprogramming, vehicle built from jan
- Mack trucks: information on replacement procedures for the slack adjuster control arm and suspension shock...
- Mack: an unreliable signal to engine vgt actuator from engine variable geometry turbocharger (VGT)...
- Mack truck: due to vehicle electronic control unit (VECU) output wire PT02, the circuit CB7A is in wrong...
- Mack truck: aftertreatment diesel particulate filter (DPF) inlet pipe may possibly exhibit an exhaust leak
- Mack truck: information provided regarding modification of EGR valve on engines and removal of poppet...
- Marck truck: information regarding two upper huck bolts for fuel tank j bracket and aftertreatment control...
- Mack trucks: engine tubocharger compressor bypass valve, airline routing
- Mack trucks: EGR differential pressure sensor pin fretting
- Mack trucks: four way flasher ABS fault
- Mack: due to fretting of connector pins in engine vgt actuator connector, a new mounting arrangement has...
- Mack truck: information regarding the sleeper cab suspension leveling valve bracket that was installed...
- Mack: on the right side of truck, is the mounted stanchion exhaust bracket and fuel vent lines, which the...
- Mack: during extreme downward articulation of rear axle, the air spring may separate at mounting bell.
- Mack trucks: frame flange contacting suspension crossmember
- Mack trucks: severe fretting damage of the engine variable geometry turbocharger actuator (engine vgt...
- Mack trucks: oil seepage at flywheel housing
- Mack: torque rod replacement on front rear axle
- Mack: the aftertreatment diesel exhaust fluid (DEF) tank filler neck is being replaced with an improved...
- Mack: on certain mack vehicles built before 2/13/2012, the front chassis to urea tank connection, located...
- Mack trucks: software update installation of engine turbocharger compressor bypass valve kit for the...
- Mack truck: between aftertreatment hydrocarbon dosing module initial design and boss on MP8 engine, an...
- Mack truck: expansion tanks may have persistent coolant leaks that requires inspection
- Mack truck: trucks will be reprogram with the latest software version of vehicle electronic control unit...
- Mack truck: there is fuel leakage at tandem fuel pump
- Mack truck: passenger door peep window is loosening from door
- Mack trucks: on certain trucks (chu, cxu gu td), all aftertreatment diesel exhaust fluid (DEF) coolant...
- Mack truck: fuel tank mounting
- Mack trucks: there are cracks in a steel oil tube that CAN lead to leaking
- Mack: there are new bull gear mounting fastener torque procedures
- Mack truck: on certain trucks, there is a loss of speed (LOW) assist
- Mack truck: on certain truck chassis, there may be possible damage to components cause by loosening of the...
- Mack truck: on certain vehicles, the aftertreatment diesel exhaust fluid (DEF) solenoid valve was...
- Mack: clutch operation error prevents starter engagement unless pedal is fully depressed
- Mack trucks: torque rod to mounting bracket bolts were installed incorrectly
- Mack trucks: there are new EGR outlet hose clamps
- Mack: fan rings are cracking during extreme service
- Mack trucks: the location of the nitrous oxyde sensor and piping around it has been changed to protect it...
- Mack trucks: there are engine ECM software updates
- Mack trucks: the fuse identification decal is being corrected
- Mack trucks: the transmission shift instruction label has been updated
- Mack: procedure to fix the an insulation blanket in the exhaust system that CAN deteriorate over time
- Mack trucks: the diagnostic connector may become loose
- Mack truck: there is a software update
- Mack trucks: there is a new thermostat seal and cover to prevent coolant leakage
- Mack: engine ECU reprogramming
- Mack: power steering hose, replacement
- Mack: diesel exhaust fluid pump, repair
- Mack trucks: the clutch pedal CAN rub agains the anti-lock brake harness causing the malfunction light to...
- Mack trucks: if there is a failed outer valve spring there is a replacement procedure
- Mack truck: rear trim panel wear plate, installation
- Mack truck: engine ECM and acm software updates
- Mack truck: cab/dashboard panel cracks may form due to excessive cab flexing during extreme use of the trucks
- Mack trucks: there are new revised torque procedures to prevent the bull gear mounting screws from loosening
- Mack truck: the oil slinger threads on the input shaft of the transmission were threaded incorrectly and...
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