Certain Peterbilt Model 589 chassis equipped with LED headlamps may need a relay and fuses for the...
Peterbilt technical service bulletin 34-101 for 2026 Peterbilt 589.
- Bulletin number
- 34-101
- Component
- Exterior lighting
- Summary
- Certain Peterbilt Model 589 chassis equipped with LED headlamps may need a relay and fuses for the integrated heaters to be functional.
Vehicles covered
- Peterbilt 589 2026 2026
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