Moderate overlap front: original test
Rating applies to 2005-09 models
Tested vehicle: 2007 Chevrolet TrailBlazer LS 4-door 4wd
The Chevrolet TrailBlazer was introduced in the 2002 model year, and the GMC Envoy was redesigned the same year. The Buick Rainier and Isuzu Ascender (5-passenger) were introduced in the 2004 model year.
Beginning with 2005 models, structural, frontal airbag, and seat belt changes were made to improve occupant protection in frontal crashes. The Saab 9-7X was introduced late in the 2005 model year, the Buick Rainier was discontinued after the 2007 model year, and the Isuzu Ascender was discontinued after the 2008 model year.
| Overall evaluation | |
|---|---|
| Structure and safety cage | |
| Driver injury measures | |
| Head/neck | |
| Chest | |
| Leg/foot, left | |
| Leg/foot, right | |
| Driver restraints and dummy kinematics |
Action shot taken during the frontal offset crash test.
The dummy's position in relation to the steering wheel and instrument panel after the crash test indicates that the driver's survival space was maintained reasonably well.
Smeared pink greasepaint indicates where the dummy's head hit the B-pillar. Head acceleration from this hit was low.
Forces on the lower right leg were high enough to indicate the possibility of injuries.
Measures of occupant compartment intrusion on driver side
| Test ID | CEF0719 |
|---|---|
| Footwell intrusion | |
| Footrest (cm) | 17 |
| Left (cm) | 16 |
| Center (cm) | 18 |
| Right (cm) | 14 |
| Brake pedal (cm) | 22 |
| Instrument panel rearward movement | |
| Left (cm) | 5 |
| Right (cm) | 7 |
| Steering column movement | |
| Upward (cm) | 1 |
| Rearward (cm) | 5 |
| A-pillar rearward movement (cm) | 6 |
Driver injury measures
| Test ID | CEF0719 |
|---|---|
| Head | |
| HIC-15 | 397 |
| Peak gs at hard contact | 19 |
| Neck | |
| Tension (kN) | 1.4 |
| Extension bending moment (Nm) | 26 |
| Maximum Nij | 0.31 |
| Chest maximum compression (mm) | 43 |
| Legs | |
| Femur force - left (kN) | 4.1 |
| Femur force - right (kN) | 3.5 |
| Knee displacement - left (mm) | 0 |
| Knee displacement - right (mm) | 0 |
| Maximum tibia index - left | 0.47 |
| Maximum tibia index - right | 1.09 |
| Tibia axial force - left (kN) | 2.4 |
| Tibia axial force - right (kN) | 2.6 |
| Foot acceleration (g) | |
| Left | 130 |
| Right | 103 |
Side: original test
Rating applies to 2008-09 models
Tested vehicle: 2007 Chevrolet TrailBlazer LS 4-door 4wd with optional front and rear head curtain airbags
The Chevrolet TrailBlazer was introduced in the 2002 model year, and the GMC Envoy was redesigned the same year. The Buick Rainier and Isuzu Ascender (5-passenger) were introduced in the 2004 model year.
Beginning with 2005 models, front and rear side head curtain airbags became available as options. The Saab 9-7X was introduced late in the 2005 model year with standard head curtain airbags. The Buick Rainier was discontinued after the 2007 model year and the Isuzu Ascender was discontinued after the 2008 model year. Beginning with the 2008 model year, side airbags were made standard on all remaining models.
| Overall evaluation | |
|---|---|
| Structure and safety cage | |
| Driver injury measures | |
| Head/neck | |
| Torso | |
| Pelvis/leg | |
| Driver head protection | |
| Rear passenger injury measures | |
| Head/neck | |
| Torso | |
| Pelvis/leg | |
| Rear passenger head protection | |
View of the vehicle and barrier just after the crash test.
View of the vehicle after the crash with doors removed, showing the side airbag and damage to the occupant compartment.
Smeared greasepaint shows where the driver dummy's head was protected from being hit by hard structures by the side curtain airbag.
Smeared greasepaint shows where the rear passenger dummy’s head was protected by the side airbag.
Measures of occupant compartment intrusion on driver side
| Test ID | CES0724 |
|---|---|
| B-pillar to longitudinal centerline of driver's seat (cm) | -0.5 |
| Negative numbers indicate the amount by which the crush stopped short of the seat centerline. | |
Driver injury measures
| Test ID | CES0724 |
|---|---|
| Head HIC-15 | 326 |
| Neck | |
| Tension (kN) | 2.4 |
| Compression (kN) | 0.0 |
| Shoulder | |
| Lateral deflection (mm) | 53 |
| Lateral force (kN) | 2.4 |
| Torso | |
| Maximum deflection (mm) | 56 |
| Average deflection (mm) | 40 |
| Maximum deflection rate (m/s) | 7.46 |
| Maximum viscous criterion (m/s) | 1.68 |
| Pelvis | |
| Iliac force (kN) | 1.3 |
| Acetabulum force (kN) | 2.3 |
| Combined force (kN) | 3.4 |
| Left femur | |
| L-M force (kN) | 0.2 |
| L-M moment (Nm) | 106 |
| A-P moment (Nm) | -30 |
Passenger injury measures
| Test ID | CES0724 |
|---|---|
| Head HIC-15 | 146 |
| Neck | |
| Tension (kN) | 0.2 |
| Compression (kN) | 0.3 |
| Shoulder | |
| Lateral deflection (mm) | 32 |
| Lateral force (kN) | 1.4 |
| Torso | |
| Maximum deflection (mm) | 41 |
| Average deflection (mm) | 28 |
| Maximum deflection rate (m/s) | 2.70 |
| Maximum viscous criterion (m/s) | 0.48 |
| Pelvis | |
| Iliac force (kN) | 0.1 |
| Acetabulum force (kN) | 2.4 |
| Combined force (kN) | 2.4 |
| Left femur | |
| L-M force (kN) | 0.7 |
| L-M moment (Nm) | 83 |
| A-P moment (Nm) | -36 |
Head restraints & seats
Seat type: All seats
| Overall evaluation | |
|---|---|
| Dynamic rating | |
| Seat/head restraint geometry |
| Seat type | All seats |
|---|---|
| Geometry | |
| Backset (mm) | 78 |
| Distance below top of head (mm) | 80 |
| Seat design parameters | |
| Pass/fail | Fail |
| Max T1 acceleration (g) | 10.7 |
| Head contact time (ms) | 96 |
| Force rating | 3 |
| Neck forces | |
| Max neck shear force (N) | 277 |
| Max neck tension (N) | 879 |
About the head restraint & seat test
Currently, IIHS tests apply only to front seats.