Rear crash protection: Chevrolet
For each seat/head restraint, rear-end crash protection is an assessment of occupant protection against neck injury in rear impacts at low to moderate speeds. Although such injuries usually aren't serious, they occur frequently.
The overall ratings are based on a two-step evaluation. In the first step the geometry (distance behind and below the head of a seated average-size man) is rated good, acceptable, marginal, or poor. Seats with good or acceptable geometry then are subjected to a dynamic test simulating the forces in a stationary vehicle that's rear-ended by another vehicle of the same weight going 20 mph. Seat/head restraints with marginal or poor geometry aren't tested dynamically because they cannot protect taller people in rear-end crashes. These seats are rated poor overall.
In the dynamic tests measurements are recorded on a dummy (BioRID) representing an average-size man. BioRID is designed specifically for rear-end testing at low to moderate speeds. The dynamic ratings are derived from two seat design parameters (acceleration of the dummy's torso and time from impact initiation to head restraint contact with the dummy's head) plus tension and shear forces recorded on the dummy's neck. Overall ratings are based on both geometric measurements and dynamic results.
More about the procedures for rating seat/head restraints
Good
Acceptable
Marginal
Poor
| Model | Seat type | Overall rating | Dynamic rating | Seat/head restraint geometry |
|---|---|---|---|---|
| Astro 2003-2005 |
All seats |
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not tested (see note) |
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| Aveo 2010-2011 |
Manual cloth seats |
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| Aveo 2007-2009 |
Manual cloth seats |
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| Cavalier 2001-2005 |
All seats |
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not tested (see note) |
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| Cobalt 2-door 2005-2010 |
Manual cloth seats |
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| Cobalt 4-door 2005-2010 |
All seats |
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| Colorado 2004-2012 |
Bench seats |
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| Colorado 2004-2012 |
Bucket seats |
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| Cruze 2011-2013 |
Manual cloth seats |
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| Equinox 2010-2013 |
Manual - power cloth seats |
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| Equinox 2005-2009 |
All seats |
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| HHR 2006-2011 |
Manual - power cloth seats |
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| Impala 2009-2013 |
Manual - power seats |
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| Impala 2006-2008 |
Manual cloth seats |
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| Impala 2001-2005 |
Cloth bucket seats |
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not tested (see note) |
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| Impala 2001-2005 |
Leather bucket seats |
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not tested (see note) |
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| Malibu 2013 |
Manual power cloth seat |
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| Malibu 2010-2012 |
Manual - power cloth seats mfg. after Nov. 2009 |
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| Malibu 2010 |
Manual - power cloth seats mfg. before Dec. 2009 |
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| Malibu 2008-2009 |
Manual-power cloth seats |
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| Malibu 2004-2007 |
All seats |
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| Malibu/Classic 2003-2005 |
Cloth seats |
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not tested (see note) |
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| Malibu/Classic 2003-2005 |
Leather seats |
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not tested (see note) |
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| Silverado 1500 2007-2013 |
Manual cloth seats |
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| Silverado 1500 2001-2006 |
Seats with adjustable head restraints |
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not tested (see note) |
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| Silverado 1500 2001-2006 |
Seats with fixed head restraints |
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not tested (see note) |
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| Sonic 2012-2013 |
Manual cloth seat |
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| TrailBlazer 2003-2009 |
All seats |
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| Traverse 2013 |
Power leather seat |
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| Traverse 2009-2012 (mfg. after March 2008) |
Manual-power cloth seats |
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| Uplander 2005-2008 |
All seats |
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| Volt 2011-2013 |
Manual cloth seat |
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Note: Seat/head restraints with marginal or poor geometry aren't tested dynamically because they cannot protect taller people in rear-end crashes. These seats are rated poor overall. Seat/head restraints with good or acceptable geometry are also tested dynamically.
Rear crash protection test details (technical information)
Geometric ratings of other Chevrolet models
Ratings of seat/head restraints in newer model cars are based on restraint geometry and a dynamic test. The Institute has been publishing model-by-model ratings of the the geometry of the head restraints in older models since the mid-1990s. Geometry is the necessary first step toward a seat/head restraint that provides effective protection in rear-end crashes at low to moderate speeds.
More than one rating: Ratings are for individual vehicle models. More than one rating may be shown for a model because vehicle seat options can affect head restraint geometry.
No rating shown/no model year listed: The Institute has not evaluated the head restraints in every vehicle model during every model year. If a rating box is blank or if a model year is not listed, no rating is available. If a box is shaded gray, the model was not manufactured that year.
AHR: active head restraint. These are designed to move closer to the backs of occupants' heads in rear-end crashes. These are not rated for geometry at this time.
| Model | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1995 | |
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| Astro | see table above | see table above |  |
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| 4-dr | see table above | see table above | see table above | see table above | |
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| Express | |
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| Impala | see table above | see table above | see table above | see table above | |
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| Malibu | see table above | see table above | |
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| Metro | 2-dr | |
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| Silverado 1500 | see table above | see table above | see table above | see table above | |
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| Silverado 2500 | |
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| Silverado 3500 | |
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| SSR | |
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| Tracker | 2-dr | |
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| TrailBlazer | see table above | see table above | |
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