Wipers do not work and the tractor lights turn off ALL of the lights the trailer lights go out as well the fuse for these electrical components gets very hot, this makes it very dangerous when driving at night and when it's raining. The driver has to pull over till he can get the lights to come back on
The worst 2018 Mack Gu problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Electrical1
- Lights1
- Visibility1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Electrical1
- Lights1
- Visibility1
Recalls
No recalls on record for this model year.
Technical service bulletins for the 2018 Mack Gu 243
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- CBR: Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value...
- CBR: Turbo Compound (TC) Hot Side Noise, Diagnostic Information.
- CBR -Telematics Gateway (TGW) Connect Ability Issues
- Cbr
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- Cbr: tgw
- CBR: Frame Or Cab Lean
- CBR: For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left...
- Emissions Campaign: Mack Trucks has determined that certain 2014
What 2018 Mack Gu owners say
Most recent owner complaints, unedited.
Compare the 2018 Mack Gu
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Questions about the 2018 Mack Gu
Is the 2018 Mack Gu reliable?
Owners have filed 1 complaint about the 2018 Mack Gu, close to a typical Gu model year.
What is the most common problem with the 2018 Mack Gu?
Electrical system, with 1 complaint. Next is lights (1).
How many recalls does the 2018 Mack Gu have?
No recalls on record.
VIN decoder
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