GM Service Manual Online
For 1990-2009 cars only
Figure 1:

B+ Bus Bar


Object Number: 754396  Size: FS
Master Electrical Component List
Ign RUN and START Bus Bar
G100, G101, G106, G107, G108 and G110
Figure 2:

Ign RUN and START Bus Bar


Object Number: 754400  Size: FS
Master Electrical Component List
Ign ACC, RUN and RAP Bus Bar
B+ Bus Bar
B+ Bus Bar
Figure 3:

Ign ACC, RUN and RAP Bus Bar


Object Number: 754404  Size: FS
Master Electrical Component List
Stop, Turn and Hazard Bus Bar
Ign RUN and START Bus Bar
B+ Bus Bar
Figure 4:

Stop, Turn and Hazard Bus Bar


Object Number: 754406  Size: FS
Master Electrical Component List
STUD 2, ABS, HDLP W/W, TBC and RR W/W Fuses
Ign ACC, RUN and RAP Bus Bar
B+ Bus Bar
Ign RUN and START Bus Bar
Figure 5:

STUD 2, ABS, HDLP W/W, TBC and RR W/W Fuses


Object Number: 754409  Size: FS
Master Electrical Component List
INT BATT, PWR LKS, AMPF, CTSY LP and CIGAR LTR Fuses
Stop, Turn and Hazard Bus Bar
B+ Bus Bar
Figure 6:

INT BATT, PWR LKS, CTSY LP and CIGAR LTR Fuses


Object Number: 885574  Size: FS
Master Electrical Component List
Inadvertent Power Relay
STUD 2, ABS, HDLP W/W, TBC and RR W/W Fuses
B+ Bus Bar
Inadvertent Power Relay
AUX PWR, RDO BATT and HDLP SW Fuses
Figure 7:

Inadvertent Power Relay


Object Number: 754414  Size: FS
Master Electrical Component List
AUX PWR, RDO BATT and HDLP SW Fuses
INT BATT, PWR LKS, AMPF, CTSY LP and CIGAR LTR Fuses
INT BATT, PWR LKS, AMPF, CTSY LP and CIGAR LTR Fuses
Figure 8:

AUX PWR, RDO BATT and HDLP SW Fuses


Object Number: 879235  Size: FS
Master Electrical Component List
HTD SEAT, ATC, HVAC and A/C Fuses
Inadvertent Power Relay
INT BATT, PWR LKS, AMPF, CTSY LP and CIGAR LTR Fuses
Figure 9:

HTD SEAT, ATC, HVAC, and A/C Fuses


Object Number: 879244  Size: FS
Master Electrical Component List
MIR/LKS, FOG LP Fuses and DRL, Headlamp Power Relays
AUX PWR, RDO BATT and HDLP SW Fuses
B+ Bus Bar
Figure 10:

MIR/LKS, FOG LP Fuses and DRL, Headlamp Power Relays


Object Number: 754424  Size: FS
Master Electrical Component List
ECM B, HORN, RR DEFOG, HTD MIR Fuses and Fuel Pump, Horn, Rear Window Defogger Relays
HTD SEAT, ATC, HVAC and A/C Fuses
B+ Bus Bar
Figure 11:

ECM B, HORN, RR DEFOG, HTD MIR Fuses and Fuel Pump, Horn, Rear Window Defogger Relays


Object Number: 754432  Size: FS
Master Electrical Component List
ILLUM, STG WHL ILLUM, and PARK LP Fuses
MIR/LKS, FOG LP Fuses and DRL, Headlamp Power Relays
B+ Bus Bar
Figure 12:

ILLUM and PARK LP Fuses


Object Number: 996623  Size: FS
Master Electrical Component List
ILLUM Power - Pickup Except Crew Cab
ECM B, HORN, RR DEFOG, HTD MIR Fuses and Fuel Pump, Horn, Rear Window Defogger Relays
ILLUM Power - Pickup Except Crew Cab
ILLUM Power - Utility
B+ Bus Bar
FR PRK, LR PRK, RR PRK Fuses and Fog Lamp Relay - Pickup
FR PRK, LR PRK, RR PRK, TRL PRK Fuses and Fog Lamp Relay - Utility
FR PRK, LR PRK, RR PRK, TRL PRK and Fog Lamp Relay - Export
Figure 13:

ILLUM Power - Pickup Except Crew Cab


Object Number: 879236  Size: FS
Master Electrical Component List
ILLUM Power - Utility
ILLUM, STG WHL ILLUM, and PARK LP Fuses
ILLUM, STG WHL ILLUM, and PARK LP Fuses
SIR Caution for Zoning
Figure 14:

ILLUM Power - Utility


Object Number: 879237  Size: FS
Master Electrical Component List
Splice Pack SP206
ILLUM Power - Pickup Except Crew Cab
ILLUM, STG WHL ILLUM, and PARK LP Fuses
ILLUM Power - 2-Door Utility, 4-Door Utility and Crew Cab
Figure 15:

Illum Power - 2- Door Utility, 4- Door Utility and Crew Cab


Object Number: 754438  Size: FS
Master Electrical Component List
FR PRK, LR PRK, RR PRK Fuses and Fog Lamp Relay - Pickup
ILLUM Power - Utility
ILLUM Power - Utility
Figure 16:

FR PRK, LR PRK, RR PRK Fuses and Fog Lamp Relay - Pickup


Object Number: 754430  Size: FS
Master Electrical Component List
FR PRK, LR PRK, RR PRK, TRL PRK Fuses and Fog Lamp Relay - Utility
ILLUM Power - 2-Door Utility, 4-Door Utility and Crew Cab
ILLUM, STG WHL ILLUM, and PARK LP Fuses
Figure 17:

FR PRK, LR PRK, RR PRK, TRL PRK Fuses and Fog Lamp Relay - Utility


Object Number: 857712  Size: FS
Master Electrical Component List
FR PRK, LR PRK, RR PRK, TRL PRK and Fog Lamp Relay - Export
FR PRK, LR PRK, RR PRK Fuses and Fog Lamp Relay - Pickup
ILLUM, STG WHL ILLUM, and PARK LP Fuses
Figure 18:

FR PRK, LR PRK, RR PRK, TRL PRK and Fog Lamp Relay - Export


Object Number: 857715  Size: FS
Master Electrical Component List
CRANK and CLSTR Fuses
FR PRK, LR PRK, RR PRK, TRL PRK Fuses and Fog Lamp Relay - Utility
ILLUM, STG WHL ILLUM, and PARK LP Fuses
Figure 19:

CRANK and CLSTR Fuses


Object Number: 901335  Size: FS
Master Electrical Component List
TURN, SIR and GAUGES Fuses
FR PRK, LR PRK, RR PRK, TRL PRK and Fog Lamp Relay - Export
Figure 20:

TURN, SIR and Gauges Fuses


Object Number: 754445  Size: FS
Master Electrical Component List
IGN E Fuse and A/C Compressor Clutch, Rear Window Defogger Relays
CRANK and CLSTR Fuses
SIR Caution for Zoning
SIR Caution for Zoning
Figure 21:

IGN E Fuse and A/C Compressor Clutch, Rear Window Defogger Relays


Object Number: 754446  Size: FS
Master Electrical Component List
B/U LP, TRL B/U and BTSI Fuses - Automatic Transmission
TURN, SIR and GAUGES Fuses
Ign RUN and START Bus Bar
Figure 22:

B/U LP, TRL B/U, VEH B/U and BTSI Fuses - Automatic Transmission


Object Number: 754447  Size: FS
Master Electrical Component List
BTSI Fuse Power - Automatic Transmission
IGN E Fuse and A/C Compressor Clutch, Rear Window Defogger Relays
Ign RUN and START Bus Bar
BTSI Fuse Power - Automatic Transmission
Figure 23:

BTSI Fuse Power - Automatic Transmission


Object Number: 754448  Size: FS
Master Electrical Component List
ENG I and OXYSEN Fuses
B/U LP, TRL B/U and BTSI Fuses - Automatic Transmission
B/U LP, TRL B/U and BTSI Fuses - Automatic Transmission
Figure 24:

ENG I and OXYSEN Fuses


Object Number: 857717  Size: FS
Master Electrical Component List
ECM I Fuse
BTSI Fuse Power - Automatic Transmission
Ign RUN and START Bus Bar
Figure 25:

ECM I Fuse


Object Number: 857722  Size: FS
Master Electrical Component List
RDO IGN and STR WHL RDO IGN Fuses
ENG I and OXYSEN Fuses
Ign RUN and START Bus Bar
Figure 26:

RDO IGN Fuse


Object Number: 879238  Size: FS
Master Electrical Component List
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
ECM I Fuse
Figure 27:

POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay


Object Number: 996655  Size: FS
Master Electrical Component List
RR WPR, FRT WPR and ABS Fuses
RDO IGN and STR WHL RDO IGN Fuses
Ign ACC, RUN and RAP Bus Bar
Figure 28:

RR WPR, FRT WPR and ABS Fuses


Object Number: 1222660  Size: FS
Master Electrical Component List
HVAC I Fuse
POWER SEATS, POWER WINDOW Circuit Breakers and RAP Relay
Figure 29:

HVAC I Fuse


Object Number: 879239  Size: FS
Master Electrical Component List
4WD Fuse - 4.3L
RR WPR, FRT WPR and ABS Fuses
Ign ACC, RUN and RAP Bus Bar
Figure 30:

4WD Fuse - 4.3L


Object Number: 754463  Size: FS
Master Electrical Component List
HVAC and CRUISE Fuses
HVAC I Fuse
Ign ACC, RUN and RAP Bus Bar
Figure 31:

HVAC and CRUISE Fuses


Object Number: 996691  Size: FS
Master Electrical Component List
VECHMSL, TRCHMSL Fuses and CHMSL Relay
4WD Fuse - 4.3L
Ign ACC, RUN and RAP Bus Bar
Figure 32:

VECHMSL, TRCHMSL Fuses and CHMSL Relay


Object Number: 754465  Size: FS
Master Electrical Component List
RT TURN, RT TRN and TRR TRN Fuses
HVAC and CRUISE Fuses
Figure 33:

RT TURN, RT TRN and TRR TRN Fuses


Object Number: 754467  Size: FS
Master Electrical Component List
LT TURN, LT TRN and TRL TRN Fuses
VECHMSL, TRCHMSL Fuses and CHMSL Relay
Figure 34:

LT TURN, LT TRN and TRL TRN Fuses


Object Number: 754468  Size: FS
Master Electrical Component List
RT TURN, RT TRN and TRR TRN Fuses