Colorado

Towing and Payload:

6000 lb / 2721 kg maximum towing capacity with Vortec 5.3L V-8
1422 lb / 645 kg maximum payload capacity
    with 2WD Regular Cab

Models: Regular, Extended and Crew Cabs, 2WD and 4WD

Trim Levels: WT, 1LT, 2LT, 3LT

Mileage:

EPA EST 24 MPG HWY / 22 MPG CITY (STD. 2.9L I-4 Gas)
EPA EST 23 MPG HWY / 17 MPG CITY (3.7L I-5 Gas)
EPA EST 20 MPG HWY / 15 MPG CITY (5.3L V8 Gas)

Express

Maximum Capacity:

G1500 Passenger - 7300 lb / 3311 kg
G1500 Cargo - 7300 lb / 3311 kg
G2500 Passenger - 9600 lb / 4354 kg
G2500 Cargo - 10,000 lb / 4538 kg
G3500 Passenger - 9600 lb / 4354 kg
G3500 Cargo - 10,000 lb / 4538 kg

Models:

G1500 Half-Ton Passenger and Cargo
H1500 Half-Ton Passebger and Cargo
G2500 Three-Quarter-Ton Cargo and Cutaway
G3500 One-Ton Cargo and Cutaway

Mileage:

EPA EST 20 MPG HWY / 15 MPG CITY (4.3L V6)
EPA EST 17 MPG HWY / 13 MPG CITY (5.3L V8)

Silverado

Towing:

13,000 lb / 5897 kg maximum towing capacity
    with ball hitch and 6.0L V-8
16,700 lb / 7575 kg maximum towing capacity
    with fifth-wheel and 6.0L V-8

Models:

2WD and 4WD Regular Cab, Long Box
    (Dual Wheel Box available on 3500HD)
2WD and 4WD Extended Cab, Std. Box
2WD and 4WD Extended Cab, Long Box
    (Dual Wheel Box available on 3500HD)
2WD and 4WD Crew Cab, Std. Box
2WD and 4WD Crew Cab, Long Box
    (Dual Wheel Box available on 3500HD)
XFE

Trim Levels: WT, LT, LTZ

Mileage:

EPA EST 22 MPG HWY / 21 MPG CITY (6.0L V8 Gas/Hybrid)
EPA EST 21 (22 XFE) MPG HWY / 15 MPG CITY
    5.3L V8 FlexFuel Gas/Ethanol E85)
EPA EST 20 MPG HWY / 15 MPG CITY (4.3L V8 Gas)
EPA EST 19 MPG HWY / 14 MPG CITY
    (4.8L V8 FlexFuel Gas/Ethanol E85)
EPA EST 19 MPG HWY / 12 MPG CITY
    (6.2L V8 FlexFuel Gas/Ethanol E85)

HHR

Interior Capacity:

57.5 cu. ft. of maximum cargo room in the HHR,
    62.7 cu. ft. in the HHR Panel
HHR Panel accomodates cargo eight feet long
    with folded passenger seat

Models:

HHR and HHR Panel

Mileage:

EPA EST 32 MPG HWY / 22 MPG CITY (2.2L I-4 VVT)
EPA EST 29 MPG HWY / 21 MPG CITY
    (260-HP SS Turbocharged)