GMT400Canonical generation
GMC Sierra 1500 GMT400
1988–1998 · GMT400
GMC Sierra 1500 GMT400 (1988–1998): chassis code GMT400; pickup body style. It is the earliest GMC Sierra 1500 generation in the catalog, followed by the GMT800.
Verification: Unverified. Catalog classification is awaiting verification. Where provided, manufacturer references are separately sourced for the model years shown.
- Make
- GMC
- Model
- Sierra 1500
- Generation
- GMT400
- Code
- GMT400
- Chassis Codes
- GMT400
- Years
- 1988–1998
- Body Styles
- Pickup
Every GMC Sierra 1500 generation
- GMT400 (1988–1998)
- GMT800 (1999–2006)
- GMT900 (2007–2013)
- K2XX (2014–2018)
- T1XX (2019–present)