Peterbilt 377 Automotive Locksmith

The Peterbilt 377 was produced 1986–1996. It is a discontinued commercial truck, which mainly affects blank and fob availability rather than whether the work can be done — older platforms are frequently easier to key than new ones, not harder.

The 377’s 1986–1996 run crosses two key generations: model years 1986–1995 predate transponder immobilizers in the US market, so a replacement there is usually a cutting job rather than a programming one; and 1996 sit in the transponder era, where the key carries a chip and often a remote head, so the work is cutting and programming together. Which one applies to a particular 377 is decided by its model year and trim, not by the nameplate, so have the year ready when you call.

At 30+ years since the last Peterbilt 377 was built, wear is the usual reason a key stops working rather than failure of the key itself. A cylinder that has accepted the same key for decades eventually stops aligning to it, and a key cut fresh to code often works better in that lock than the worn original it replaces.

Eligibility for the Peterbilt 377 is confirmed against the exact model year and trim before a job is treated as scheduled, and proof of identity and vehicle ownership or written authorization is required before any key is originated or programmed.

Other Peterbilt models from the same era

• Peterbilt 320 1986–2023
• Peterbilt 357 1986–2023
• Peterbilt 375 1986–1996
• Peterbilt 379 1985–2016 and again 2022–2023
• Peterbilt 376 1988–1996
• Peterbilt 378 1988–2023
• Peterbilt 310 1981–1996
• Peterbilt 348 1981–2027