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

Underhood Fuse Block


Object Number: 477330  Size: MF
(1)Not Used
(2)ACCY Fuse (15A)
(3)WSW Fuse (30A)
(4)Not Used
(5)HDLOBML Fuse (10A)
(6)HDLOBMR Fuse (10A)
(7)Not Used
(8)PCM BATT Fuse (10A)
(9)HDHIBMR Fuse (10A)
(10)HDHIBML Fuse (10A)
(11)IGN1 Fuse (10A)
(12)Not Used
(13)TRANS Fuse (10A)
(14)CR CONT Fuse (10A)
(15)DIS Fuse (20A)
(16)INJR2 Fuse (10A)
(17)Not Used
(18)Not Used
(19)PCM IGN Fuse (10A)
(20)OXY SEN Fuse (10A)
(21)INJR1 Fuse (10A)
(22)AUX PWR Fuse (20A)
(23)C/LTR Fuse (20A)
(24)FOG/DRL Fuse (15A)
(25)HORN Fuse (15A)
(26)A/C CLU Fuse (15A)
(27)HDLP HI BM Relay
(28)HDLP LO BM Relay
(29)FOG LP Relay
(30)DRL Relay
(31)HORN Relay
(32)A/C CLU Relay
(33)HVAC SOL Relay
(34)ACCY Relay
(35)AIR PUMP Relay
(36)START1 Relay
(37)COOLFAN1 Relay
(38)IGN1 Relay
(39)COOLFAN S/P Relay
(40)COOLFAN2 Relay
(41)START Circuit Breaker (30A)
(42)AIR Fuse (30A)
(43)ABS Fuse (50A)
(44)AIR PUMP B Fuse (50A)
(45)AIR PUMP A Fuse (50A)
(46)COOL FAN 1 Fuse (30A)
(47)COOL FAN 2 Fuse (30A)
(48)Spare Fuses
(55)Fuse Puller
Figure 2:

Rear Fuse Block


Object Number: 477322  Size: MF
(1)F/PMP Fuse (20A)
(2)HVAC BLO Fuse (30A)
(3)MEM Fuse (10A)
(4)ALDL Fuse (10A)
(5)RR FOG Fuse (Not Used)
(6)CD Fuse (10A)
(7)DRV MDL Fuse (10A)
(8)SIR Fuse (15A)
(9)Not Used
(10)LP PK R Fuse (10A)
(11)VENT SOL Fuse (10A)
(12)IGN1 Fuse (10A)
(13)LP PK L Fuse (10A)
(14)DIMR Fuse (10A)
(15)Not Used
(16)HTDST LF Fuse (10A)
(17)Not Used
(18)RRDR MDL Fuse (10A)
(19)STOP LP Fuse (15A)
(20)NSBU Fuse (10A)
(21)AUDIO Fuse (10A)
(22)RAP Fuse (20A)
(23)Not Used
(24)Not Used
(25)PASSMDL Fuse (10A)
(26)BODY Fuse (15A)
(27)INT LP Fuse (10A)
(28)Not Used
(29)IGN SW Fuse (15A)
(30)I/P Fuse (10A)
(31)HTDST RF Fuse (10A)
(32)Not Used
(33)HVAC Fuse (10A)
(34)IGN3 RR Fuse (10A)
(35)ABS Fuse (10A)
(36)TSIG/HAZ Fuse (15A)
(37)HVAC BATT Fuse (10A)
(38)DIM Fuse (10A)
(39)F/PMP Relay
(40)PRK LP Relay
(41)IGN1 Relay
(42)Not Used
(43)Not Used
(44)PARK Relay
(45)REVERSE Relay
(46)RAP Relay
(47)F/TRNKDRLOCK Relay
(48)Not Used
(49)IGN3 Relay
(50)F/TNKDR REL Relay
(51)INT LP Relay
(52)TRK REL Relay
(53)FRT CTSY Relay
(54)Not Used
(55)ELC Relay
(56)PWR SEAT Circuit Breaker (30A)
(57)PWR WDO Circuit Breaker (40A)
(58)CIGAR Relay
(59)RR DEFOG Relay
(60)Not Used
(61)RR DEFOG Fuse (40A)
(62)Not Used
(63)AUDIO AMP Fuse (20A)
(64)ELC Fuse (30A)
(65)CIGAR Fuse (40A)
(66)Not Used
(67)Spare Fuse
(68)Spare Fuse
(69)Spare Fuse
(70)Spare Fuse
(71)Spare Fuse
(72)Spare Fuse
(73)Spare Fuse
(74)Spare Fuse
(75)Fuse Puller