GMC Heavy Conventional Automotive Locksmith

The GMC Heavy Conventional was produced 1981–1988. It is a discontinued pickup 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.

Across its 1981–1988 run, the Heavy Conventional sits in one key generation: model years 1981–1988 predate transponder immobilizers in the US market, so a replacement there is usually a cutting job rather than a programming one. The exact model year and trim still decide the parts, so have the year ready when you call.

At 38+ years since the last GMC Heavy Conventional 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 GMC Heavy Conventional 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 GMC models from the same era

• GMC Aluminum Tilt 1981–1988
• GMC Bus Chassis 1981–1988
• GMC C5 1981–1996 and again 2003–2009
• GMC C6 1981–2009
• GMC C7 1981–2009
• GMC Caballero 1981–1987
• GMC C/K Pickup 1981–1986
• GMC Forward Control 1981–1990