63418_21k_2.pdf, Silverado, Engine/suspension availability – CHEVROLET Silverado 1500 User Manual
Page 21: Autotrac 4x4 system, Suspension packages
21
SILVERADO
ENGINE/SUSPENSION AVAILABILITY
Autotrac 4x4 System
The available Autotrac 4-wheel-drive system on 1500 and 1500HD models allows you to
choose an automatically controlled 4-wheel-drive mode, or traditional 2HI, 4HI, Neutral and
4LO functions – all at the touch of a button. This is the only automatic 4-wheel-drive system
available in full-size pickups today.*
AUTOTRAC 4X4 SYSTEM OPERATION
• AUTO 4WD detects rear-wheel slippage and automatically engages 4WD as road
conditions dictate.
• 2HI is the 2WD setting for most driving conditions and optimal fuel economy.
• 4HI is a full-time 4WD mode for snow, ice, rain and most off-road conditions.
• 4LO is the low-speed 4WD setting for extreme conditions, such as steep hills,
deep sand, mud or snow.
• NEUTRAL is also provided with the Autotrac system, permitting flat towing.
*Based on 2005 Model Year data for GM Large Pickup segment and latest available competitive information
at time of printing. Excludes other GM vehicles.
Suspension Packages
A variety of suspension packages are available on Silverados, providing ride characteristics tailored to your
particular needs.
1500 MODELS
• Standard Suspension (Z83) – 35 mm Twintube shock absorbers on 2WD models except LT Extended Cabs.
• Heavy-Duty Suspension (Z85) – Standard on all 4x4s and LT Extended Cabs with Monotube
36 mm shocks for increased damping to improve handling and trailering.
• Ride Control (ZX3) – Optional on LS and LT 2WD and 4x4s. Manually adjusts the amount of shock absorber
damping using a two-position switch for smooth road or increased control and trailering.
• Off-Road (Z71) – Includes 46 mm shock absorbers, special jounce bumpers and stabilizer bars, skid plates,
high-capacity air cleaner and Z71 decals. Available on LS and LT 4x4s only.
1500HD, 2500HD AND 3500 MODELS
• Heavy-Duty Suspension (Z85) – Provides good carrying and trailering capabilities. Standard on these models.
STANDARD & OPTIONAL ENGINES
Series
Cab Type
Model
Vortec 4300 V6
1
Vortec 4800 V8
2
Vortec 5300 V8
3
Vortec 6000 V8
4
VortecMAX V8
4
Vortec 8100 V8
5
Duramax 6600 V8
5
Number
195 hp @ 4600 rpm
285 hp @ 5200 rpm
295 hp @ 5200 rpm
300 hp @ 4400 rpm
345 hp @ 5200 rpm
330 hp @ 4200 rpm
Turbo Diesel
260 lb.-ft. torque
295 lb.-ft. torque
335 lb.-ft. torque
360 lb.-ft. torque
380 lb.-ft. torque
450 lb.-ft. torque
360 hp @ 3200 rpm
@ 2800 rpm
@ 4000 rpm
@ 4000 rpm
@ 4000 rpm
@4000 rpm
@ 3200 rpm
650 lb.-ft. torque
@ 1600 rpm
1500
Regular Cab
C15703
S
O
O
–
–
–
–
C15903
S
O
O
–
–
–
–
K15703
S
O
O
–
–
–
–
K15903
S
O
O
–
–
–
–
Extended Cab
C15553
–
–
S
–
–
–
–
C15753
S
O
O
–
O
6
–
–
C15953
–
S
O
–
–
–
–
C15753/SS
–
–
–
_
S
–
–
K15553
–
–
S
–
–
–
–
K15753
–
S
O
–
O
6
–
–
K15953
–
–
S
–
–
–
–
Crew Cab
C15543
–
–
S
–
O
6
–
–
C15543/Cheyenne
–
S
–
–
–
–
–
K15543
–
–
S
–
O
6
–
–
K15543/Cheyenne
–
S
–
–
–
–
–
1500HD
Crew Cab
C15743
–
–
–
S
–
–
–
K15743
–
–
–
S
–
–
–
2500HD
Regular Cab
C25903
–
–
–
S
–
O
O
K25903
–
–
–
S
–
O
O
Extended Cab
C25753
–
–
–
S
–
O
O
C25953
–
–
–
S
–
O
O
K25753
–
–
–
S
–
O
O
K25953
–
–
–
S
–
O
O
Crew Cab
C25743
–
–
–
S
–
O
O
C25943
–
–
–
S
–
O
O
K25743
–
–
–
S
–
O
O
K25943
–
–
–
S
–
O
O
3500
Regular Cab
K35903
–
–
–
S
–
O
O
Extended Cab
C35953
–
–
–
S
–
O
O
K35953
–
–
–
S
–
O
O
Crew Cab
C35943
–
–
–
S
–
O
O
K35943
–
–
–
S
–
O
O
1 – A 5-speed manual transmission is standard in Regular Cabs. A 4-speed automatic transmission is optional. 2 – A 5-speed manual transmission is standard. A 4-speed automatic transmission is optional in most models, standard in models indicated with (S).
3 – A 4-speed automatic transmission is required and is standard in 1500 Crew Cabs. Aluminum block 5300 V8, available on 1500 Extended Cab 4x4s, produces 310 hp @ 5200 rpm. 4 – In models equipped with a Vortec 6000 V8, a heavy-duty 5-speed manual
transmission is standard. A heavy-duty 4-speed automatic transmission is optional. 5 – A 6-speed ZF manual transmission is standard. A 6-speed Allison 1000 automatic transmission is optional. Duramax 6600 V8 Turbo Diesel with 6-speed manual transmission
produces 300 hp @ 3000 rpm and 520 lb.-ft. of torque @ 1600 rpm. 6 – Available with VortecMAX Performance Package or Silverado Performance Edition (on Ext. Cab 2WD model only). NOTE: Some models with up-level trims and the 1500 and 1500HD
Crew Cabs include a 4-speed automatic transmission. Some up-level series include a larger engine than those indicated on this chart. Ask your Sales Consultant for details.
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