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Fuze Box Problems


mwhit135
10-01-2008, 10:30 PM
Hey folks, im having a heck of a problem with electrical issues, so here i am. First off, vehicle specs.
1995 GMC Sierra 1500 SL, 5.7L engine with 98k miles. The problem started about 4 years ago, yeh... its been a while.
I was driving normal, stopped at a stop light, turned at the green light and click. I lost the majority of anything electronic.
It seems to me that a good half of my fuze box does not get power. SO far on troubleshooting i know that all the
electronics themselves work fine. I went through each terminal and gave them power from a different source by connecting
a wire from a terminal that i knew was getting power (top terminal where 1 side of fuze goes) and lead that to each of the bottom
terminals that had items that werent getting power. This is how i was able to prolong this for close to 4 years, by pretty much hard
wiring things i needed (radio, Wipers AC). Here is a rundown of what terminals are getting power and which are not, also
what they belong to (some may not apply) as worded from the owners manual. If a number isnt listed, it isnt used.


1 - Power - STOP/HAZ -stop/TCC Switch, buzzer, CHMSL, Hazard lamps, stop lamps.
3 - Power - CTSY - courtesy lamps, cargo lamp, glove (http://autoforums.carjunky.com/Automotive_Repair_C1/Electrical_and_Wiring_F6/Fuze_box_Power_problems_P35130/#)box light, dome/RDG lamps, vanity mirrors, pwr mirrors.[/color]
4 - Power - GAGES - IP cluster, DRL relay, HDLP switch, keyless entry (http://autoforums.carjunky.com/Automotive_Repair_C1/Electrical_and_Wiring_F6/Fuze_box_Power_problems_P35130/#), low coolant module
6 - No Power - CRUISE - cruise control
7 - Power - AUX POWER - aux power outlet
8 - No Power - CRANK - Diesel fuel pump, DERM, ECM
9 - Power - PARK LPS - lic lamp, park lamp, tail lamp, roof marker, tail gate lamps, front side markers, fog lamps relay, door switch illum, fender lamps
10 - Power - AIR BAG - DERM
11 - No Power - WIPER - Wiper motor, washer pump
12 - No Power - HTR/AC - A/C, A/C Blower, high blower relay
13 - Power - CIG LTR - power amp, rear liftglass, cig lighter, door lock relay, pwr lumbar seat
14 - No Power - ILLUM - 4WD Indicator, LP Cluster, HVAC controls, rr hvac controls, IP switches, radio illumination
15 - Power - DRL-FOG - DRL relay, fog lamp relay
16 - Power - TURN-B/U - frnt turn, rr turn, b/u lamps
17 - No Power - RADIO - Radio (ign)
18 - No Power - BRAKE - DRAC, 4WAL PCM, ABS, Cruise
19 - Power - RADIO BATT - radio (batt)
24 - No Power - 4WD - Frt Axle, 4WD Indicator Lamp

A - (circuit breaker) PWR ACCY - pwr door locks
B - (Circuit breaker) PWR WDOS - power windows

Please lend a hand if you can. I have checked all the fuzes i can possibly find, maybe im missing
a hidden one or something... if only it was that simple. Thanks in advance for any help or input. Also i have looked at the following diagrams and only see the 1 fusable link, which is between the battery and alternator. It appears fine, and have no alternator problems so i ruled that one out.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008f3ce

-Whit

Airjer_
10-01-2008, 11:43 PM
My first thought would be ignition switch. You need to get your hands on a good wiring diagram of the fuse block and ignition switch. Most public libraries offer alldata for free. From there its as easy as checking power in and power out.

mwhit135
10-04-2008, 03:48 PM
Fixed! Appreciate the input folks, 1 of 4 problems down Lol

Airjer_
10-05-2008, 08:28 AM
What Fixed it?

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