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| Vehicle/model | Chevrolet Avalanche LT Z71 | Chevrolet Silverado Extended Cab Z71 | GMC Sierra SLT Crew Cab | | Base price | $35,295 | $31,690 | $37,740 | | Price as tested | $46,665 | $35,619 | $44,079 | | Options as tested | Avalanche LT3 Equipment Group ($3,650),
rain-sensing wipers ($95),
electric sliding sunroof ($995),
rear-seat entertainment system ($1,295),
navigation radio with CD/DVD/MP3 ($2,145),
rearview camera system ($195),
luggage-rack crossbars ($45),
luggage-rack side rails ($195),
heated washer-fluid system ($85),
Z71 Off-Road Suspension Package ($1,795),
destination ($875)
| Power sliding rear window ($200),
front leather seating surfaces ($800),
18-inch aluminum wheels ($250),
LT2 Convenience Package ($595),
EZ Lift Tailgate Package ($95),
P265/65R18 OOR BW tires ($55),
Cargo Management System ($175),
XM Satellite Radio ($199),
camper/5th wheel trailer wiring ($35),
Z71 Off-Road Suspension Package ($625),
destination ($900)
| Head-curtain side-impact airbags ($395),
Max Trailering Package ($1,840),
Convenience Package ($540),
EZ-Lift & Locking Tailgate Package ($95),
17-inch P265 OOR, BW tires with spare ($55),
credit, unit produced without Universal Home Remote (-$110),
Cargo Management System ($175),
XM Satellite Radio ($199),
AM/FM stereo, MP3 compatible CD player and multimedia navigation ($2,250),
destination ($900)
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| Type | OHV V-8 | OHV V-8 | OHV V-8 | | Displacement (ci/liter) | 325/5.3 | 325/5.3 | 364/6.0 | | Bore x stroke (in) | 3.78 x 3.62 | 3.78 x 3.62 | 4.00 x 3.62 | | Compression ratio | 9.9:1 | 9.9:1 | 9.6:1 | | Induction | Active Fuel Management, SFI | Active Fuel Management, SFI | SFI | | Mfg.'s power rating @ rpm (hp) | 310 @ 5,200 | 315 @ 5,200 | 367 @ 5,500 | | Mfg.'s torque rating @ rpm (lb-ft) | 335 @ 4,400 | 338 @ 4,400 | 375 @ 4,300 | | Mfg.'s suggested fuel type | Regular unleaded or E85 | Regular unleaded or E85 | Regular unleaded |
| Transmission | Hydra-Matic 4L60 four-speed automatic | Hydra-Matic 4L60 four-speed automatic | Hydra-Matic 4L70 four-speed | Ratios: | | First | 3.06:1 | 3.06:1 | 3.06:1 | | Second | 1.63:1 | 1.63:1 | 1.63:1 | | Third | 1.00:1 | 1.00:1 | 1.00:1 | | Fourth | 0.70:1 | 0.70:1 | 0.70:1 | | Reverse | 2.29:1 | 2.29:1 | 2.29:1 | | Axle ratio | 3.73:1 | 3.73:1 | 4.10:1 | | Transfer case | NV246 | NV246 | NV246 | | Low-range ratio | 2.72:1 | 2.72:1 | 2.72:1 | | Crawl ratio | 31.1:1 | 31.1:1 | 34.1:1 |
| Frame | Steel ladder | Steel ladder | Ladder | | Body | Steel | Steel | Steel |
| Front | Independent, coilover shock monotube shock absorbers/AAM 8.25-inch | Independent, coilover shock, monotube shock absorbers/AAM 8.25-inch | Independent, coilover shock, monotube shock absorbers/AAM 8.25-inch | | Rear | Five-link, coil springs/AAM 8.6-inch, G80 mechanical locking differential | Semi-elliptic, variable-rate, two-stage multileaf springs, splayed monotube shock absorbers/AAM 8.6-inch, G80 mechanical locking differential | Semi-elliptic, variable-rate, two-stage multileaf springs, splayed monotube shock absorbers/AAM 9.5-inch, G80 mechanical locking differential |
| Type | Power-assisted rack-and-pinion | Power-assisted rack-and-pinion | Power-assisted rack-and-pinion | | Turns (lock-to-lock) | 3.0 | 3.0 | 3.0 | | Ratio | 17.75:1 | 16.5:1 | 16.5:1 |
| Front | 13x1.18 vented disc, two-piston calipers | 13x1.18 vented disc, two-piston calipers | 13x1.18 vented disc, two-piston calipers | | Rear | 13.5x.787 vented disc, single-piston calipers | 13.5x0.79 vented disc, single-piston calipers | 13.5x0.79 vented disc, single-piston calipers | | ABS | Four-wheel | Four wheel | Four wheel |
| Wheels (in) | 18x8 | 18x8 | 17x7.5 | | Tires | P265/65R18 Bridgestone Dueler A/T | P265/65R18 Bridgestone Dueler A/T | P265/70R17 Goodyear Wrangler AT/S |
| EPA city/highway | 15/20 | 16/20 | 15/19 | | Observed city/highway/trail | 14.63 | 14.09 | 12.63 |
| Weight (lb) | 5,645 | 5,143 | 5,281 | | Wheelbase (in) | 130.0 | 133.9 | 143.5 | | Overall length (in) | 221.3 | 220.6 | 230.2 | | Overall width (in) | 79.1 | 79.9 | 80.0 | | Height (in) | 76.6 | 73.7 | 73.7 | | Track f/r (in) | 68.2/67.0 | 68.1 x 67.0 | 68.1/67.0 | | Minimum ground clearance (in) | 9.1 | 9.0 | 9.0 | | Turning diameter, curb-to-curb (ft) | 43.0 | 46.9 | 47.2 | | Bed Dimensions LxWxH (in) | 63.3x50.0x25.0 | 69.3x62.4x21.0 | 69.29x62.4x21.0 | | Approach/departure angles (deg) | 24/20.31 | 15.3/23.0 | 15.3/22.4 | | Breakover angle (deg) | 20.6 | 20.6 | 19.3 | | GVWR (lb) | 7,200 | 6,800 | 7,300 | | Payload (lb) | 1,487 | 1,657 | 2,010 | | Maximum towing capacity (lb) | 8,000 | 8,600 | 10,500 | | Seating | 5 | 5 | 6 | | Fuel capacity (gal) | 31.5 | 26.0 | 26.0 |
| 0-30 mph (sec, laden) | 4.54 | 4.02 | 3.79 | | 0-30 mph (sec, unladen) | 4.19 | 3.64 | 3.51 | | 0-60 mph (sec, laden) | 11.68 | 10.46 | 9.60 | | 0-60 mph (sec, unladen) | 10.84 | 9.60 | 9.16 | | Quarter-mile (sec @ mph, laden) | 18.60 @ 80.51 | 17.78 @ 82.21 | 17.27 @ 83.66 | | Quarter-mile (sec @ mph, unladen) | 18.03 @ 81.94 | 17.19 @ 83.73 | 16.99 @ 83.27 | | Braking 60-0 mph (ft) | 150.31 | 152.88 | 143.56 |
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