2005 Chevrolet (Chevy) Silverado 2500 SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Fig. 1: Automatic A/C Circuit, Front A/C (1 of 2)

Fig. 2: Automatic A/C Circuit, Front A/C (2 of 2)

Fig. 3: Compressor Circuit

Fig. 4: Heater Circuit

Fig. 5: Manual A/C Circuit, Front A/C (1 of 2)

Fig. 6: Manual A/C Circuit, Front A/C (2 of 2)

ANTI-LOCK BRAKES

Fig. 7: Anti-lock Brakes Circuit, GVW 8600 Lbs or Less

Fig. 8: Anti-lock Brakes Circuit, GVW Over 8600 Lbs

ANTI-THEFT

Fig. 9: Forced Entry Circuit

Fig. 10: Passlock Circuit

BODY CONTROL MODULES

Fig. 11: Body Control Modules Circuit (1 of 2)

Fig. 12: Body Control Modules Circuit (2 of 2)

COMPUTER DATA LINES

Fig. 13: Computer Data Lines Circuit (1 of 2)

Fig. 14: Computer Data Lines Circuit (2 of 2)

CRUISE CONTROL

6.0L VIN U

Fig. 15: 6.0L VIN U, Cruise Control Circuit

6.6L VIN 2

Fig. 16: 6.6L VIN 2, Cruise Control Circuit

8.1L VIN G

Fig. 17: 8.1L VIN G, Cruise Control Circuit

DEFOGGERS

Fig. 18: Heated Mirrors Circuit

Fig. 19: Rear Defogger Circuit

ELECTRONIC POWER STEERING

Fig. 20: Rear Wheel Steering Circuit

ELECTRONIC SUSPENSION

Fig. 21: Electronic Suspension Circuit

ENGINE PERFORMANCE

6.0L BI-FUEL

Fig. 22: 6.0L Bi-Fuel, Engine Performance Circuit (1 of 8)

Fig. 23: 6.0L Bi-Fuel, Engine Performance Circuit (2 of 8)

Fig. 24: 6.0L Bi-Fuel, Engine Performance Circuit (3 of 8)

Fig. 25: 6.0L Bi-Fuel, Engine Performance Circuit (4 of 8)

Fig. 26: 6.0L Bi-Fuel, Engine Performance Circuit (5 of 8)

Fig. 27: 6.0L Bi-Fuel, Engine Performance Circuit (6 of 8)

Fig. 28: 6.0L Bi-Fuel, Engine Performance Circuit (7 of 8)

Fig. 29: 6.0L Bi-Fuel, Engine Performance Circuit (8 of 8)

6.0L CNG

Fig. 30: 6.0L CNG, Engine Performance Circuit (1 of 7)

Fig. 31: 6.0L CNG, Engine Performance Circuit (2 of 7)

Fig. 32: 6.0L CNG, Engine Performance Circuit (3 of 7)

Fig. 33: 6.0L CNG, Engine Performance Circuit (4 of 7)

Fig. 34: 6.0L CNG, Engine Performance Circuit (5 of 7)

Fig. 35: 6.0L CNG, Engine Performance Circuit (6 of 7)

Fig. 36: 6.0L CNG, Engine Performance Circuit (7 of 7)

6.0L VIN U

Fig. 37: 6.0L VIN U, Engine Performance Circuit, Except Hybrid (1 of 5)

Fig. 38: 6.0L VIN U, Engine Performance Circuit, Except Hybrid (2 of 5)

Fig. 39: 6.0L VIN U, Engine Performance Circuit, Except Hybrid (3 of 5)

Fig. 40: 6.0L VIN U, Engine Performance Circuit, Except Hybrid (4 of 5)

Fig. 41: 6.0L VIN U, Engine Performance Circuit, Except Hybrid (5 of 5)

6.6L VIN 2

Fig. 42: 6.6L VIN 2, Engine Performance Circuit (1 of 6)

Fig. 43: 6.6L VIN 2, Engine Performance Circuit (2 of 6)

Fig. 44: 6.6L VIN 2, Engine Performance Circuit (3 of 6)

Fig. 45: 6.6L VIN 2, Engine Performance Circuit (4 of 6)

Fig. 46: 6.6L VIN 2, Engine Performance Circuit (5 of 6)

Fig. 47: 6.6L VIN 2, Engine Performance Circuit (6 of 6)

8.1L VIN G

Fig. 48: 8.1L VIN G, Engine Performance Circuit (1 of 5)

Fig. 49: 8.1L VIN G, Engine Performance Circuit (2 of 5)

Fig. 50: 8.1L VIN G, Engine Performance Circuit (3 of 5)

Fig. 51: 8.1L VIN G, Engine Performance Circuit (4 of 5)

Fig. 52: 8.1L VIN G, Engine Performance Circuit (5 of 5)

EXTERIOR LIGHTS

Fig. 53: Back-up Lamps Circuit

Fig. 54: Exterior Lamps Circuit (1 of 3)

Fig. 55: Exterior Lamps Circuit (2 of 3)

Fig. 56: Exterior Lamps Circuit (3 of 3)

GROUND DISTRIBUTION

Fig. 57: Ground Distribution Circuit, Except Hybrid (1 of 4)

Fig. 58: Ground Distribution Circuit, Except Hybrid (2 of 4)

Fig. 59: Ground Distribution Circuit, Except Hybrid (3 of 4)

Fig. 60: Ground Distribution Circuit, Except Hybrid (4 of 4)

HEADLIGHTS

Fig. 61: Headlights Circuit

HORN

Fig. 62: Horn Circuit

INSTRUMENT CLUSTER

Fig. 63: Instrument Cluster Circuit (1 of 2)

Fig. 64: Instrument Cluster Circuit (2 of 2)

INTERIOR LIGHTS

Fig. 65: Courtesy Lamps Circuit (1 of 2)

Fig. 66: Courtesy Lamps Circuit (2 of 2)

Fig. 67: Instrument Illumination Circuit (1 of 3)

Fig. 68: Instrument Illumination Circuit (2 of 3)

Fig. 69: Instrument Illumination Circuit (3 of 3)

MEMORY SYSTEMS

Fig. 70: Memory Mirrors Circuit

Fig. 71: Memory Seat Circuit (1 of 2)

Fig. 72: Memory Seat Circuit (2 of 2)

POWER DISTRIBUTION

6.0L BI-FUEL

Fig. 73: 6.0L Bi-Fuel, Power Distribution Circuit, Except Hybrid (1 of 6)

Fig. 74: 6.0L Bi-Fuel, Power Distribution Circuit, Except Hybrid (2 of 6)

Fig. 75: 6.0L Bi-Fuel, Power Distribution Circuit, Except Hybrid (3 of 6)

Fig. 76: 6.0L Bi-Fuel, Power Distribution Circuit, Except Hybrid (4 of 6)

Fig. 77: 6.0L Bi-Fuel, Power Distribution Circuit, Except Hybrid (5 of 6)

Fig. 78: 6.0L Bi-Fuel, Power Distribution Circuit, Except Hybrid (6 of 6)

6.0L CNG

Fig. 79: 6.0L CNG, Power Distribution Circuit, Except Hybrid (1 of 6)

Fig. 80: 6.0L CNG, Power Distribution Circuit, Except Hybrid (2 of 6)

Fig. 81: 6.0L CNG, Power Distribution Circuit, Except Hybrid (3 of 6)

Fig. 82: 6.0L CNG, Power Distribution Circuit, Except Hybrid (4 of 6)

Fig. 83: 6.0L CNG, Power Distribution Circuit, Except Hybrid (5 of 6)

Fig. 84: 6.0L CNG, Power Distribution Circuit, Except Hybrid (6 of 6)

6.0L VIN U

Fig. 85: 6.0L VIN U, Power Distribution Circuit, Except Hybrid (1 of 6)

Fig. 86: 6.0L VIN U, Power Distribution Circuit, Except Hybrid (2 of 6)

Fig. 87: 6.0L VIN U, Power Distribution Circuit, Except Hybrid (3 of 6)

Fig. 88: 6.0L VIN U, Power Distribution Circuit, Except Hybrid (4 of 6)

Fig. 89: 6.0L VIN U, Power Distribution Circuit, Except Hybrid (5 of 6)

Fig. 90: 6.0L VIN U, Power Distribution Circuit, Except Hybrid (6 of 6)

6.6L VIN 2

Fig. 91: 6.6L VIN 2, Power Distribution Circuit (1 of 5)

Fig. 92: 6.6L VIN 2, Power Distribution Circuit (2 of 5)

Fig. 93: 6.6L VIN 2, Power Distribution Circuit (3 of 5)

Fig. 94: 6.6L VIN 2, Power Distribution Circuit (4 of 5)

Fig. 95: 6.6L VIN 2, Power Distribution Circuit (5 of 5)

8.1L VIN G

Fig. 96: 8.1L VIN G, Power Distribution Circuit, Except Hybrid (1 of 6)

Fig. 97: 8.1L VIN G, Power Distribution Circuit, Except Hybrid (2 of 6)

Fig. 98: 8.1L VIN G, Power Distribution Circuit, Except Hybrid (3 of 6)

Fig. 99: 8.1L VIN G, Power Distribution Circuit, Except Hybrid (4 of 6)

Fig. 100: 8.1L VIN G, Power Distribution Circuit, Except Hybrid (5 of 6)

Fig. 101: 8.1L VIN G, Power Distribution Circuit, Except Hybrid (6 of 6)

POWER DOOR LOCKS

Fig. 102: Power Door Locks Circuit, Base

Fig. 103: Power Door Locks Circuit, Up Level (1 of 2)

Fig. 104: Power Door Locks Circuit, Up Level (2 of 2)

POWER MIRRORS

Fig. 105: Electrochromic Mirror Circuit

Fig. 106: Power Mirrors Circuit

POWER SEATS

Fig. 107: Driver Seat Circuit

Fig. 108: Heated Seats Circuit

Fig. 109: Passenger Power Seat Circuit

Fig. 110: Passenger"s Lumbar Circuit

POWER WINDOWS

Fig. 111: Power Windows Circuit

RADIO

Fig. 112: Base Radio Circuit

Fig. 113: Mid-Line Radio Circuit, W/ Rear Seat Audio (1 of 4)

Fig. 114: Mid-Line Radio Circuit, W/ Rear Seat Audio (2 of 4)

Fig. 115: Mid-Line Radio Circuit, W/ Rear Seat Audio (3 of 4)

Fig. 116: Mid-Line Radio Circuit, W/ Rear Seat Audio (4 of 4)

Fig. 117: Mid-Line Radio Circuit, W/O Rear Seat Audio (1 of 4)

Fig. 118: Mid-Line Radio Circuit, W/O Rear Seat Audio (2 of 4)

Fig. 119: Mid-Line Radio Circuit, W/O Rear Seat Audio (3 of 4)

Fig. 120: Mid-Line Radio Circuit, W/O Rear Seat Audio (4 of 4)

Fig. 121: Premium Sound Radio Circuit, W/ CD, W/ Rear Entertainment, W/ Digital Receiver (1 of

3)

Fig. 122: Premium Sound Radio Circuit, W/ CD, W/ Rear Entertainment, W/ Digital Receiver (2 of

3)

Fig. 123: Premium Sound Radio Circuit, W/ CD, W/ Rear Entertainment, W/ Digital Receiver (3 of

3)

Fig. 124: Premium Sound Radio Circuit, W/ CD (1 of 2)

Fig. 125: Premium Sound Radio Circuit, W/ CD (2 of 2)

Fig. 126: Premium Sound Radio Circuit, W/ Digital Radio Receiver (1 of 2)

Fig. 127: Premium Sound Radio Circuit, W/ Digital Radio Receiver (2 of 2)

SHIFT INTERLOCK

Fig. 128: Shift Interlock Circuit

STARTING/CHARGING

Fig. 129: Starting Circuit, Except Hybrid

6.0L BI-FUEL

Fig. 130: 6.0L Bi-Fuel, Charging Circuit, Hybrid

6.0L CNG

Fig. 131: 6.0L CNG, Charging Circuit, Hybrid

6.0L VIN U

Fig. 132: 6.0L VIN U, Charging Circuit, Hybrid

6.6L VIN 2

Fig. 133: 6.6L VIN 2, Charging Circuit

8.1L VIN G

Fig. 134: 8.1L VIN G, Charging Circuit, Hybrid

SUPPLEMENTAL RESTRAINTS

Fig. 135: Supplemental Restraints Circuit (1 of 2)

Fig. 136: Supplemental Restraints Circuit (2 of 2)

TRANSMISSION

Fig. 137: Transfer Case Circuit, 2-Speed Automatic

Fig. 138: Transfer Case Circuit, 2-Speed Manual

Fig. 139: Transfer Case Circuit, Selectable

6.0L BI-FUEL

Fig. 140: 6.0L Bi-Fuel, A/T Circuit

6.0L CNG

Fig. 141: 6.0L CNG, A/T Circuit

6.0L VIN U

Fig. 142: 6.0L VIN U, A/T Circuit

6.6L VIN 2

Fig. 143: 6.6L VIN 2, A/T Circuit

8.1L VIN G

Fig. 144: 8.1L VIN G, A/T Circuit

WARNING SYSTEMS

Fig. 145: Warning Systems Circuit (1 of 2)

Fig. 146: Warning Systems Circuit (2 of 2)

WIPER/WASHER

Fig. 147: Wiper/Washer Circuit