GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2004
🢒
TopKick C-Series (Conventional) C4/C5
🢒 Module Power, Ground, Serial Data, and MIL
Module Power, Ground, Serial Data, and MIL
Module Power, Ground, Serial Data, and MIL
Master Electrical Component List
Engine Control Module Description
Fuse Block - Underhood Ignition A and B Relays
Engine Controls Schematic Icons
B+ Bus Bar
Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars
Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars
A/C COMP, HTD FUEL, PCM-B, and RR DEFOG Fuses
START and TRANS Fuses/Circuit Breakers
ENGINE and PCM-I Fuses/Circuit Breakers
GAUGES, L-RR TRUCK, R-RR TRUCK, and SIR Fuses/Circuit Breakers
Power and Indicators
START and TRANS Fuses/Circuit Breakers
ENGINE and PCM-I Fuses/Circuit Breakers
J1939 Serial Data (L65/L18/LG4/LC8) - 2 of 2
Splice Pack SP203 (L18/LB7/LG4/LLY)
G203 - 2 of 4
