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Chevrolet Silverado / GMC Sierra. Manual - part 2749
Rotor Replacement (JH6) or Rear Brake Rotor Replacement (JH7) .
8. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation .
9. Remove the safety stands.
10. Lower the vehicle.
DESCRIPTION AND OPERATION
GENERAL DESCRIPTION
All 15 series utility vehicles use a 5-link rear suspension system. The rear axle is attached to the
frame with the upper control arms, lower control arms, and a track bar. Two coil springs and a
link mounted rear stabilizer shaft complete the system.
All 25 series Utility models use a rear spring suspension system and a solid rear axle suspension
system. The rear axle is attached to the multi-rear springs by U-bolts. The front of the spring ends
are attached to the frame at the front hangers through rubber bushings. The rear of the spring ends
are attached to the frame with shackles that allow the springs to change their length, due to the
spring compressing, while the vehicle is in motion. The ride control is provided by 2 identical
direct dual-action shock absorbers that are angle-mounted between the frame and the brackets
which are attached to the axle tubes.
SPECIAL TOOLS AND EQUIPMENT
SPECIAL TOOLS
Illustration
Tool Number/ Description
J 43631
Ball Joint Remover
2008 Chevrolet Silverado 1500
2008 SUSPENSION Rear Suspension - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2008 ACCESSORIES & EQUIPMENT
Seat Heating and Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
SCHEMATIC AND ROUTING DIAGRAMS
HEATED/COOLED SEAT SCHEMATICS
Fig. 1: Heated Seat - Driver
Courtesy of GENERAL MOTORS CORP.
Application
Specification
Metric
English
Seat Heater Switch Screw
2 N.m
18 lb in
Front Heated Seat Module Bolt
9 N.m
80 lb in
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Seat Heating and Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Seat Heating and Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 2: Heated Seat - Passenger
Courtesy of GENERAL MOTORS CORP.
DIAGNOSTIC INFORMATION AND PROCEDURES
DIAGNOSTIC CODE INDEX
DIAGNOSTIC CODE INDEX
DTC
Description
DTC B1925 or B2170
B1925 02: Left Seat Heater Cushion Sensor Circuit Shorted to
Ground
B1925 05: Left Seat Heater Cushion Sensor Circuit Shorted to
Battery or Open
B2170 02: Right Seat Heater Cushion Sensor Circuit Shorted
to Ground
B2170 05: Right Seat Heater Cushion Sensor Circuit Shorted
to Battery or Open
DTC B1935 or B2180
B1935 04: Left Seat Back Heater Circuit Open
B1935 0A: Left Seat Back Heater Circuit Rate of Change
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Seat Heating and Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Below Threshold
B1935 0B: Left Seat Back Heater Circuit Current Above
Threshold
B1935 0C: Left Seat Back Heater Circuit Current Below
Threshold
B1935 0D: Left Seat Back Heater Circuit Resistance Above
Threshold
B1935 0E: Left Seat Back Heater Circuit Resistance Below
Threshold
B1935 1F: Left Seat Back Heater Circuit Intermittent
B2180 04: Right Seat Back Heater Circuit Open
B2180 0A: Right Seat Back Heater Circuit Rate of Change
Below Threshold
B2180 0B: Right Seat Back Heater Circuit Current Above
Threshold
B2180 0C: Right Seat Back Heater Circuit Current Below
Threshold
B2180 0D: Right Seat Back Heater Circuit Resistance Above
Threshold
B2180 0E: Right Seat Back Heater Circuit Resistance Below
Threshold
B2180 1F: Right Seat Back Heater Circuit Intermittent
DTC B2345
B2345 00: Seat Heater Disable Circuit
B2345 13: Seat Heater Disable Circuit High Temperature
B2345 42: Seat Heater Disable Circuit Calibration Data Set
Not Programmed
B2345 4B: Seat Heater Disable Circuit Calibration Not
Learned
DTC B2425 or B2430
B2425 04: Left Seat Cushion Heater Circuit Open
B2425 0A: Left Seat Cushion Heater Circuit Rate of Change
Below Threshold
B2425 0B: Left Seat Cushion Heater Circuit Current Above
Threshold
B2425 0C: Left Seat Cushion Heater Circuit Current Below
Threshold
B2425 0D: Left Seat Heater Cushion Circuit Resistance Above
Threshold
B2425 0E: Left Seat Heater Cushion Circuit Resistance Below
Threshold
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Seat Heating and Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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