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Old 02-04-2010, 11:10 AM   #1
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Default Under Hood Fuse Panel Diagram

Anyone have the under hood fuse panel diagram that shows what fuse is for what. I have a 99 silverado 5.3L. I have searched and searched but can't find one. I forgot to get it when I purchased the fuse box and harness. Thanks!
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Old 02-23-2010, 08:55 AM   #2
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nobody?
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Old 02-23-2010, 04:07 PM   #3
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I might, would it be on the fuse box cover ? I have a 99' pullout with the harness and fuse box so I could look , but not till the weekend , I"m not near the motor. JOHN
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Old 02-23-2010, 07:27 PM   #4
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Underhood Bussed Electrical Center (UBEC) Fuse Application Important:: Numbers shown are to reference position only - component not marked.

Fuse/Circuit Breaker
Rating
Description

STUD 1 Fuse #1
40A
Trailer Wiring

ABS Fuse #2
60A
Brake Pressure Modulator Valve (Pump)

IGN A Fuse #3
40A
Starter Relay, Ignition Switch-IGN 1, TURN, SEO IGN Fuses

AIR Fuse #4
30A
Secondary Air Injection Reaction Pump

RAP Fuse #5
50A
Rap Relay, MIR/LOCK DR LOCK Fuses and SEATS Circuit Breaker

IGN B Fuse #6
50A
Ignition Switch-Rap Relay, Wiper/Washer and SEO ACCY Fuses

RAP 2 Fuse #7
--
Not Used

STUD 2 Fuse #8
30A
Body Wiring Provisions, Trailer Wiring

TRL R TRN 9
10A
Trailer Turn and Stop

TRL L TRN Fuse #10
10A
Trailer Turn

INJ B Fuse #11
15A
Fuel Injectors 2, 4, 6, and 8, Ignition Coils, Engine Shutoff Solenoid and Sensor-Diesel

PARK LP Fuse #12
30A
Park Lamp Relay, Headlamp and Panel Dimmer Switch-Park Lamps

FRT HVAC Fuse #13
30A
Blower Motor (High Speed)

STOP LPS Fuse #14
20A
VEH STOP and CHMSL Fuses, Trailer Wiring (LH, RH Turn and Stop Lamp)

ECM 1 Fuse #15
10A
Vehicle Control Module (VCM)/Powertrain Control Module (PCM)-(from IGN 1 Relay)

CHMSL Fuse #16
10A
Center High Mounted Stop Lamp

VEH STOP Fuse #17
10A
Vehicle Stop Lamps

TRL B/U Fuse #19
10A
Trailer Backup Lamps

INJA Fuse #20
15A
Fuel Injectors 1, 3, 5, and 7, Ignition Coils, Glow Plug Module, Fuel Heat, Water in Fuel (WIF) Sensor, Wastegate Solenoid

RR HVAC Fuse #21
--
Not Used

VEH B/U Fuse #22
15A
Vehicle Backup Lamps

ENG 1 Fuse #23
10A
Mass Air Flow (MAF) Sensor, Camshaft Position (CMP) Sensor, Evaporator Emission (EVAP) Canister Vent Valve, Evaporative Emission (EVAP) C Purge Valve

ETC Fuse #24
--
Not Used

IGN E Fuse #25
10A
A/C Compressor Clutch Relay, DRL Relay, Rear Defog Relay, Secondary Injection Reaction Pump Relay

B/U LP Fuse #26
25A
Backup Lamps, BTSI

ATC Fuse #27
20A
Automatic Transfer Case (ATC) Control Module, Encoder Motor

RR PRK Fuse #28
10A
RR Park Lamps

ECM B Fuse #29
20A
Fuel Pump Relay, Vehicle Control Module (VCM)/Powertrain Control Module (PCM)

O2 A Fuse #30
15A
Heated Oxygen Sensors

O2 B Fuse #31
15A
Heated Oxygen Sensors

LR PRK Fuse #32
10A
LR Park Lamps

RR DEFOG Fuse #33
30A
Rear Window Defogger

TRL PRK Fuse #34
15A
Trailer Park

PRIME #35
--
Fuel Pump Prime Port

RT HDLP Fuse #36
15A
RH Headlamps (Hi and Low)

HTD MIR Fuse #37
10A
Heated Outside Mirrors

LT HDLP Fuse #38
15A
LH Headlamps (Hi and Low)

A/C Fuse #39
10A
A/C Compressor Clutch

AUX PWR Fuse #40
20A
Auxiliary Power Outlets

SEO 2 Fuse #41
30A
Roof Beacon and Relay, Full Feature Seat - LH and RH

SEO 1 Fuse #42
15A
Roof Beacon Switch, Cellular Phone Wiring Provisions

DRL Fuse #43
10A
Daytime Running Lamps (DRL)

FOG LPS Fuse #44
15A
Fog Lamps

RADIO Fuse #45
15A
Radio and Instrument Cluster

CIGAR Fuse #46
15A
Data Link Connector, Cigar Lighter

RT TURN Fuse #47
10A
RH Turn Signals

BTSI Fuse #48
10A
Brake Transmission Shift Interlock

LT TURN Fuse #49
10A
LH Turn Signals

FR PRK Fuse #50
10A
Front Park Lamps

W/W Pump Fuse #51
15A
Windsheild Washer Pump

IGN C Fuse #52
20A
Ignition Switch, Crank, IGN 0 Fuses

RDO AMP Fuse #53
--
Not Used

HAZ LP Fuse #54
20A
Hazard Lamps

EXP LPS Fuse #55
10A
Not Used

HORN Fuse #56
15A
Horn/Horn Relay

CTSY LP Fuse #57
15A
Inadvertent Power Relay (Courtesy Lamps)

RR WPR Fuse #58
--
Not Used

TBC Fuse #59
10A
Body Control Module

this should help this attachment should be what your looking for.
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Under Hood Fuse Panel Diagram-99-silverado.gif  
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Old 02-24-2010, 08:49 AM   #5
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1FASTGTO - Thanks a lot, that will help.

John - I think it does have them on the cover, I forgot to get it from the junkyard when I got the motor and the junkyard is 300 miles away. If you don't mind some pics of the cover would be nice too, if the labeling will show up in the pics. Can never have to much information.

Thanks for the info.
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Old 02-25-2010, 12:33 PM   #6
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I also found these... It looks a little different from the above.
Attached Thumbnails
Under Hood Fuse Panel Diagram-99silverado.gif   Under Hood Fuse Panel Diagram-99silverado2.gif   Under Hood Fuse Panel Diagram-99silverado3.gif  
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Old 02-25-2010, 05:31 PM   #7
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If needed I have a 99 silverado with the 5.3. i can snap a pic of mine if you need it.
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Old 02-25-2010, 07:32 PM   #8
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Thanks to Fast Go and Navy...I need that inform...
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Old 02-25-2010, 09:42 PM   #9
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I looked with no luck , but it still may be floating around , I'll look some more this weekend, in fact I'll look for something else and then I will find the cover. JOHN
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Old 02-26-2010, 09:02 AM   #10
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Navy - Thanks, great info. I searched for hours.

BJ - If you get a chance to snap some pics that would be great, then I can compare w/ the two above.

John - That usually works, thanks for looking.
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Old 02-26-2010, 09:55 AM   #11
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Damn if I was home I would snap a pic of mine for ya..I have a 1999 GMC Sierra with a 5.3l in it..
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Old 02-26-2010, 02:54 PM   #12
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TOP LEFT
Click the image to open in full size.

Bottom left
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TOP RIGHT
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Bottom right
Click the image to open in full size.

Sorry I tried to get as close as I could without having to add a million pics. My cell phone isn't the best but I got all of the fuse box at least.
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Old 02-26-2010, 07:06 PM   #13
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Thanks for the pics BJ. And thanks to everyone else. Should help me get a start on the wiring after the cam swap.
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Old 02-26-2010, 07:06 PM
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