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Service bulletin 01-073

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10164369
Published by NHTSA2019-09-05
Manufacturer's number01-073
Manufacturer's date2019-08-02
NHTSA componentEQUIPMENT; EQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

Fix as Fail HVAC system may demonstrate inadequate temperature control, be stuck in defrost mode, or have intermittent changes in fan speed that can be remedied with an updated HVAC software.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories, Heating and air conditioning

Vehicles listed
KENWORTH T6802011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
KENWORTH T8802011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
KENWORTH W9902019
PETERBILT 5672013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
PETERBILT 5792013, 2014, 2015, 2016, 2017, 2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
15V6410002015-10-09. EQUIPMENT
15V1320002015-03-06. EQUIPMENT:OTHER:LABELS; TIRES
12V3330002012-07-16. EQUIPMENT:OTHER:LABELS
12V3320002012-07-16. EQUIPMENT
12V2490002012-06-01. EQUIPMENT

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
02-1742023-09-01. Service bulletin. Certain W990 hood-mounted engine air intake covers could loosen and rattle or separate from vehicle. New air intake covers are available with improved retention. Installation of new covers requires hood modification. Procedures are available for replacement of hood-mounted engine air intake covers.
01-0792023-07-05. Service bulletin. Fix-as-Fail - HVAC Intermittently Stops Blowing Cold Air
04-0192022-05-05. Service bulletin. A roof fairing reinforcement kit increases structural support for one-piece 579 roof fairings that are experiencing fatigue from external forces such as reverse towing.
13-0572022-04-05. Service bulletin. Fix-As-Fail – A hill start assist (HSA) valve plumbing revision eliminates ice buildup in the HSA valve exhaust in cold weather.
51-0132022-03-04. Service bulletin. Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a primary antenna may experience this degradation
51-0132022-03-04. Service bulletin. Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a primary antenna may experience this degradation.
34-0902022-03-04. Service bulletin. A frame mounted left-hand marker light bracket interferes with the rear fuel tank fill location. A redesigned bracket can be purchased that relocates the marker bracket to the front fuel tank bracket to eliminate interference.
41-0202022-03-04. Service bulletin. The Turbo Inlet Elbow is susceptible to tearing, potentially allowing dust to enter the engine. The Turbo Inlet Elbow will be replaced with an improved part.
21PBN2022-02-04. Service bulletin. Interim Safety Recall – Methane detection system will not warn the operator if the system loses power. The driver could be unaware of an issue with the methane detection system or excessive methane present, increasing the risk of a fire, crash and/or personal injury. The repair procedure will be added when it is available.
52-0042021-08-05. Service bulletin. Fix-as-Fail: Radio does not mute when truck with auto trans is placed in reverse. Software flash resolves issue.