Fix as Fail The HVAC system, on model 579 and 567 vehicles manufactured since 1/20/2012 may have...
Kenworth technical service bulletin 01-079 for 2012 Kenworth T680, 2013-2021 Peterbilt 579 and 2012 Kenworth W900 and others.
- Bulletin number
- 01-079
- Component
- Electrical system
- Summary
- Fix as Fail The HVAC system, on model 579 and 567 vehicles manufactured since 1/20/2012 may have inadequate temperature control. The HVAC may intermittently stop blowing cold air, typically after a truck restart. Driver may notice the system returns to normal after key cycle. The remedy is updating HVAC software.
Owners of these vehicles have filed 11 complaints in the electrical category.
Vehicles covered
- Kenworth T680 2012 2012
- Peterbilt 579 2013-2021 20142015201620172018201920202021
- Kenworth W900 2012 2012
- Kenworth T880 2012 2012
- Peterbilt 567 2013-2021 20142015201620172018201920202021
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