The Used Car Index

2018 Mack GU problems

NHTSA lists 1 complaints for the 2018 Mack GU, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.

Data build 2026-10-08.

NHTSA lists this vehicle as MACK GU.

At a glance

Complaints
1
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
0
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
Unavailable
Investigations
0
Open investigations
0
Manufacturer communications
243

Complaints per 100k sold unavailable. No sales source is available for this record.

Where the complaints are

Top systems
SystemComplaintsShare of this vehicle's complaints
ELECTRICAL SYSTEM1100.0%
EXTERIOR LIGHTING1100.0%
VISIBILITY/WIPER1100.0%
Top subsystems
SystemSubsystemComplaints

One complaint can name several systems, so shares can add to more than 100 percent.

Model-generated complaint tags

These labels are model-generated, not NHTSA data.

Failure modes
LabelCountShare of taggedMean confidence
electrical electronic1100.0%0.47
Severities
LabelCountShare of taggedMean confidence
moderate1100.0%0.96

Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 1 tagged complaints of 1 complaints (100.0%).

Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.

Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.

Recalls

See new recalls and investigations this week.

0 recalls.

Investigations

0 investigations; 0 open.

Manufacturer communications

243 manufacturer communications.

Communications by system
SystemCount
ENGINE AND ENGINE COOLING93
ELECTRICAL SYSTEM53
POWER TRAIN42
EQUIPMENT36
ENGINE18
FUEL SYSTEM, DIESEL18
FUEL SYSTEM, GASOLINE17
SUSPENSION12

10253804

Date: 2024-04-22. Type: Service Bulletin/Repair Instructions. Systems: 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.

10253807

Date: 2024-04-02. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.

CBR: Turbo Compound (TC) Hot Side Noise, Diagnostic Information.

10251333

Date: 2024-02-21. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

CBR -Telematics Gateway (TGW) Connect Ability Issues

10251328

Date: 2024-02-16. Type: Service Bulletin/Repair Instructions. Systems: SUSPENSION.

CBR - Driveline Noise, Suspension Ride Height Too High, Suspension Will Not Exhaust - Chassis Built 2016w01 And Newer.

10251329

Date: 2024-02-16. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.

CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft.

10251331

Date: 2024-02-16. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

CBR - Active "Set Park Brake" Message On Drivers Information Display (DID).

10249553

Date: 2024-01-18. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

CBR: TGW Will Not Connect After SIM Card Replacement

10249551

Date: 2024-01-17. Type: Service Bulletin/Repair Instructions. Systems: STRUCTURE, SUSPENSION.

CBR: Frame Or Cab Lean

10248101

Date: 2023-12-01. Type: Service Bulletin/Repair Instructions. Systems: 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.

10248108

Date: 2023-12-01. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING, 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.

Notes on this record

  • Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
  • System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
  • Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
  • A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.

Other names NHTSA uses

None listed.

Matched NHTSA models

Matched labels and complaints
NHTSA model labelComplaints
GU1

Same model, other years

All model years | All Mack models

Other Mack models, 2018

Sources

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