Chevrolet 2011 Express 1500 Cargo Owner's Manual page 318

Body Control
58
Module 2
Body Control
59
Module 1
61 Spare
Oxygen Sensor 2
62 (Post), EV Fan
(Diesel)
63 Spare
Mass Air Flow/
64
Canister Vent
Odd Ignition/
65
Injectors
Daytime Running
Lamps 2
66
(LOLVL V22)
(If Equipped)
Daytime Running
Lamps 1
67
(UPLVL+V22)
(If Equipped)
Auxiliary Stop
68
Lamps
69 Spare
70 Spare
71 Fuel Heater
Body Control
72
Module 6
Lighter/Data Link
73
Connection
75 V6 Fuel Injectors
76 Spare
Oxygen Sensor
77
2 (Pre)
Engine Control
78
Module Powertrain
Even Ignition/
79
Injectors