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Service bulletin 01-076

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 id10174760
Published by NHTSA2020-05-06
Manufacturer's number01-076
Manufacturer's date2020-04-08
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM

NHTSA's summary

Fix as Fail: Model 520 trucks manufactured between 6/20/2017 and 8/10/2018 with LH and RH Steer may have a Recirculation Air Blend Door that does not work properly. Resolution is to remove the unneeded circuit and seal the wires.

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

Electrical system, Equipment and accessories

Vehicles listed
PETERBILT 5202017, 2018

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

Recalls for the same vehicles and component
20191992019-04-24. Electrical
19V2820002019-04-09. ENGINE; ELECTRICAL SYSTEM

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
E3262026-05-06. Emissions. EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines.
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.
34-0742021-05-03. Service bulletin. The current chassis harness connector contains a wire that is no longer necessary with the latest electrical architecture. The presence of the wire could result in a false fault code.
02-1602021-03-10. Service bulletin. Information Only – Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
13-0552020-11-05. Service bulletin. Fix as Fail: Peterbilt has introduced an improved mounting bracket for low mount air tanks for vehicles built between January 01, 2017 and July 06, 2020. Torsional vibration may stress the currently-installed brackets and cause them to fail near the bottom of the frame rail.
32-0152020-07-03. Service bulletin. Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
18PBB2020-05-06. Service bulletin. Safety Recall Bulletin: Updated with permanent repair path for phase 1 vehicles. The Tractor ABS Lamp May Not Illuminate When ABS Controller Loses Battery and/or Ignition Power. NHTSA recall number is 18V368. Non compliance to FMVSS and CMVSS 121 and 136. Resolution is to Reflash software.
34-0852020-04-03. Service bulletin. Information Only – Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.
32-0162020-04-03. Service bulletin. Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
34-0852020-03-04. Service bulletin. Information Only: Vehicles may have the connector seal on the wheel speed sensor incorrectly installed, which may lead to sensor corrosion.