2004 GMC Sierra 1500

large pickup / Crew cab pickup

Crashworthiness

Rating overview
Head restraints & seats

Key

  • G
    Good
  • A
    Acceptable
  • M
    Marginal
  • P
    Poor
  • Superior
  • Advanced
  • Basic

Some ratings use a scale of Poor to Good. Others range from Basic to Superior.

Head restraints & seats

Seat type: Seats with head restraint tilt lock

Overall evaluation
Dynamic rating
Seat/head restraint geometry
Technical measurements for this test
Seat type Seats with head restraint tilt lock
Geometry
Backset (mm) 48
Distance below top of head (mm) 85
Seat design parameters
Pass/fail Fail
Max T1 acceleration (g) 0.0
Head contact time (ms)
Force rating 0
Neck forces
Max neck shear force (N)
Max neck tension (N)

Seat type: Seats with adjustable head restraints

Overall evaluation
Dynamic rating
Seat/head restraint geometry
Technical measurements for this test
Seat type Seats with adjustable head restraints
Geometry
Backset (mm) 60
Distance below top of head (mm) 100
Seat design parameters
Pass/fail Fail
Max T1 acceleration (g) 0.0
Head contact time (ms)
Force rating 0
Neck forces
Max neck shear force (N)
Max neck tension (N)

Seat type: Seats with fixed head restraints

Overall evaluation
Dynamic rating
Seat/head restraint geometry
Technical measurements for this test
Seat type Seats with fixed head restraints
Geometry
Backset (mm) 70
Distance below top of head (mm) 125
Seat design parameters
Pass/fail Fail
Max T1 acceleration (g) 0.0
Head contact time (ms)
Force rating 0
Neck forces
Max neck shear force (N)
Max neck tension (N)

How the head restraint & seat test is conducted
Currently, IIHS tests apply only to front seats.