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October 16, 2026 Service bulletin

Certain Gra-Mag seats have an internal seat harness manufactured without heat-shrink on the resistor/diode...

Kenworth technical service bulletin 26PACE for 2027 Kenworth T680, 2027 Peterbilt 579 and 2027 Kenworth T880 and others.

Bulletin number
26PACE
Component
Electrical system
Summary
Certain Gra-Mag seats have an internal seat harness manufactured without heat-shrink on the resistor/diode ends in a harness splice. Missing heat-shrink may cause a short circuit condition.

Owners of these vehicles have filed 1 complaints in the electrical category.

Vehicles covered

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