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Service bulletins for the 1997 Peterbilt 320

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.

12 on file from NHTSA, as of 2026-10-19.

By type

By component

By topic

Bulletins, newest first
02-1602021-03-10. Service bulletin. VISIBILITY; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; VISIBILITY:WINDSHIELD WIPER/WASHER. Information Only – Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
32-0152020-07-03. Service bulletin. ELECTRICAL SYSTEM. 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.
11-0012020-06-02. Service bulletin. POWER TRAIN. Information only: Hendrickson Softek front axle maintenance intervals and requirements.
32-0162020-04-03. Service bulletin. EQUIPMENT. Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
02-1532019-12-04. Service bulletin. STRUCTURE. Information only: Some model 320 and 520 vehicles built before 3/11/2019 may experience loss or loosening of doghouse insulation. Reference the procedure in the attachment section to properly remove and replace the insulation.
01-0752019-12-04. Service bulletin. ENGINE AND ENGINE COOLING. Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
19PBC2019-08-02. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Safety Recall: Vehicles fail to confirm with FMVSS/CMVSS No 108 Table 1-a requirements which requires 2 red stop lamps. Vehicles were equipped with additional amber stop lamps which may illuminate when the brake is applied, and may confuse other drivers. Resolution is to remove the amber stop lamps and associated wiring.
34-0662019-07-08. Service bulletin. ELECTRICAL SYSTEM. Information Only - Quick Reference Guide for Electric harness damage repairs.
34-0772019-05-13. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:ELECTRICAL. Information Only: Proper instructions for closure of power distribution box cover to prevent corrosion.
13-0492019-03-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Information: Bendix ACOM Software version 6.16.5.0 for diagnostics may introduce an unrecoverable error. Notice to dealers to replace this version with older software version until Bendix introduces new version.
03-0642018-08-13. Service bulletin. ELECTRICAL SYSTEM. Information - Recommended Practices for Updating ESA Software
15-162017-10-12. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Fix-As-Fail: Repair for horizontal exhaust diffuser configurations with broken brackets or cracked diffuser.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.