# Service campaign 26PACD

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.

- Type: Service campaign
- NHTSA id: 11037543
- Published by NHTSA: 2026\-09\-29
- Manufacturer's number: 26PACD
- Manufacturer's date: 2026\-09\-19
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

"The PKC Group power distribution center \(PDC\) in certain vehicles may be contaminated with oil, which could result in a loss of power to the engine, antilock brake system, exterior lighting, windshield wipers, and/or defrost system. This issue may also result in non\-compliance with multiple Federal Motor Vehicle Safety Standard \(FMVSS\) and Canadian Motor Vehicle Safety Standard \(CMVSS\) regulations, such as FMVSS/CMVSS 103 \(windshield defrosting and defogging systems\), 104 \(windshield wiping and washing systems\), and 108 \(lamps, reflective devices, and associated equipment\). PDC serial numbers of suspect trucks in the field will be inspected against the 26PACD Suspect Serial Number List in the Links section. If a match is identified, the PDC will be replaced."

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037543-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037543-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2027 KENWORTH T280
- 2027 KENWORTH T380
- 2027 KENWORTH T480
- 2027 KENWORTH T680
- 2027 KENWORTH T880
- 2027 KENWORTH W990
- 2027 PETERBILT 536
- 2027 PETERBILT 537
- 2027 PETERBILT 548
- 2027 PETERBILT 567
- 2027 PETERBILT 579
- 2027 PETERBILT 589

## Recalls for the same vehicles and component

- [2026405](/recalls/tc/2026405.md), 2026-08-21: Electrical
- [2026367](/recalls/tc/2026367.md), 2026-07-27: Electrical
- [26V485000](/recalls/nhtsa/26V485000.md), 2026-07-27: ELECTRICAL SYSTEM:WIRING:POWER DISTRIBUTION MODULE/IPDM

## Other bulletins for the same vehicles and component

- [S024](/bulletins/11037540.md), 2026-09-29, Service bulletin: ELECTRICAL SYSTEM; SEATS. "\(KW\) Parts Shortage – Due to supplier constraints, certain T680 and T880 chassis were shipped without KIMS A/C refrigerant hose assembly. Parts are now available for installation. \(PB\) Parts Shortage – Due to supplier constraints, certain Model 567 and 579 chassis were shipped without Peterbilt SmartAir A/C refrigerant hose assembly. Parts are now available for installation."
- [01\-094](/bulletins/11037479.md), 2026-09-23, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. \[SmartAir / KIMS\] A/C systems may shut down prematurely when voltage levels drop below a certain threshold.
- [P003](/bulletins/11036295.md), 2026-08-20, Service bulletin: ENGINE; ELECTRICAL SYSTEM. "For Peterbilt: Chassis list has been updated to include 1 chassis. The total chassis count is now 7. For Kenworth: Chassis list has been updated to include 1 chassis. The total chassis count is now 8."
- [32\-009](/bulletins/11035110.md), 2026-07-21, Service bulletin: ELECTRICAL SYSTEM. The battery care, maintenance, and charging guidelines have been updated to include Absorbent Glass Mat \(AGM\) battery information. Dealers are responsible for maintaining inventory trucks and on\-shelf batteries.
- [31\-002](/bulletins/11035109.md), 2026-07-21, Service bulletin: ELECTRICAL SYSTEM. An installation guide is now available for temporary solar battery maintainers used on vehicles in dealer inventory. Using solar battery maintainers according to the attached guide can reduce instances of dead or undercharged batteries in stock vehicles at dealerships. Use of solar maintainers is considered a best practice for battery maintenance.

JSON: [/v1/bulletins/11037543](/v1/bulletins/11037543)

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