Question about 1999 GMC Suburban

2 Answers

Ignition fuse keeps blowing

40A Ignition fuse blows every time key is turned to start position

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 8 Answers

Has the stater been removed at anytime?
I had the same thing happen the fuses are not cheap.
I had replace the starter and it was the same. It was blowing the mist expensive fuse.I end up taking the starter halfway out tighten the but on the ground wiring and that fixed it.

Posted on Mar 04, 2015


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert that has over 500 points.

  • Expert
  • 308 Answers

Solenoid wire to starter may be shorted at starter..

Posted on Jan 21, 2013


5 Suggested Answers


Onifade Adewunmi

  • 2004 Answers

SOURCE: ignition fuse blows every time

Please replace the fuse with a higher rated fuse like 50 to 100 amp.

Take care.

Please rate this fixya.

Posted on Apr 10, 2009



  • 85223 Answers

SOURCE: truck starts but won't stay running

You may have a problem with the contacts in the ignition switch (not key part), when you crank the engine a signal is sent to the fuel pump to run, when it starts and you let off the key another set of contacts keeps the pump getting power Through a relay), these are known as crank and run modes.

Posted on Aug 04, 2008


  • 58 Answers

SOURCE: ECM BATT fuse keeps blowing

That fuse provides power for the fuel pump. Either your fuel pump is blowing the fuse or there is a shorted wire.

Posted on Dec 21, 2008

Kris Suit

  • 85 Answers

SOURCE: truck wont start keeps blowing the ecm batt fuse

You have a short (bear wire) somewhere. Trace the wire and find it.
Have a great evening

Posted on May 01, 2009


  • 232 Answers

SOURCE: im have a 40 watt fuse that blows when i start my truck occasiona

It could be either the ignition switch,clutch safety switch(if applicacle)or the starter solenoid,I'm including the circuit diagram for you,one of the 2 or three if it's manual trans has short,if the fuse is blowing as soon as you turn the key on(not engaging the starter)it will be in the switch itself or the clutch safety switch.If it happens when you go to engage the starter it's most likely the solenoid.

Posted on May 12, 2009

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer


Something that fuse powers is shorted to ground . Need to look at wiring diagrams , service repair manual , power distribution diagrams , disconnect everything it powers - one circuit at a time till fuse doesn't blow any more . Then find the short , videos on youtube showing how . EGN A ???? IGN A fuse . ENG 1 or 2
Underhood Fuse-Relay Center Fuse/Circuit Breaker
ABS Fuse M4-N4
Electronic Brake Control Module
A/C Fuse K11-L12
A/C Compressor Clutch Relay
AUX A Fuse P7-R7
Upfitter Provisions
AUX B Fuse P8-R8
Upfitter Provisions
BATT Fuse M7-N7
Instrument Panel Fuse Block
Blower Motor, IP Fuse Block
ECM-B Fuse F11-G12
Fuel Pump Relay, VCM, PCM, Fuel Pump and Engine Oil Pressure Gauge Sensor
ECM-1 Fuse H7-J8
Ignition Control Module, Ignition Coil, Camshaft Position Sensor, VCM, Fuel Injectors, Crankshaft Position Sensor
ENG-I Fuse L8-K7
Heated Oxygen Sensors, Mass Air Flow Sensor, Exhaust Gas Recirculation Valve Solenoid, Evaporative Emission Cannister Purge Valve, VCM, Secondary Air Injection Relay, WATER IN FUEL Indicator Sensor, Fuel Heater, Glowplug Relay, Wastegate Solenoid, Crankshaft Position Sensor
HORN Fuse H11-J12
Horn Relay, Underhood Lamp(s)
IGN Fuse F5-G6 (Diesel Only)
PCM, Fuel Solenoid Driver, Engine Shutoff Solenoid
IGN-A Fuse M6-N6
Starter Relay, Ignition Switch
IGN-B Fuse M5-N5
Ignition Switch
IGN-E Fuse F7-G8
A/C Compressor Clutch Relay
Instrument Panel Fuse Block, Headlamp Switch
LH-HDLP Fuse F1-G2 (Export Only)
Left Hand Low Beam Headlamp
LH-HIBM Fuse F3-G4 (Export Only)
Left Hand High Beam Headlamp
RH-HDLP Fuse H1-J2 (Export Only)
Right Hand Low Beam Headlamp
RH-HIBM Fuse H3-J4
Right Hand High Beam Headlamp
Auxiliary Blower Motor Relays
ABS Relay (Expot Only)
ABS Warning Indicator Lamp
A/C Relay
A/C Compressor Clutch Coil
A. I. R. Relay
Air Ijection Reaction Pump Clutch Coil
Fuel Pump Relay
Fuel Pump
Horn Relay
Starter Relay
Starter Solenoid

Jun 08, 2018 | Cars & Trucks

1 Answer

I have a 2000 Buick century custom and I had drained my reservoir. Now everything I attempt to start my car my pcm fuse blows instantly. I've replaced my ignition switch and fixed my ignition column yet...

pcm fuse blows instantly ???? What number fuse , how many amps ? Where is it located ? under hood fuse box . ECM fuse 10amp ,underhood fuse box ???? When does the fuse blow ? when you turn the key to the start position . How about when you turn it to just on position ? Replacing the ignition switch an the column ????? Why did you replace these ? You think it was going to fix the problem ? or someother problem ? Bad computer maybe .

Sep 16, 2017 | Buick Cars & Trucks

1 Answer

I have a 2004 chevy surban that keeps blowing the ignition fuse what can cause this

You have a direct short to ground on that power feed circuit . You need to find a power distribution diagram to see what all gets is power from that fuse . Isolate the circuits till the fuse doesn't blow any more , then trace out that circuit that blows the fuse .

Which Ignition fuse ? Which fuse box is it in ? under hood , passenger compartment ?
Ignition Switch RUN/ACC, RUN/START
Could be ignition switch problem , Chevy has had problems with them .

Jul 06, 2016 | Cars & Trucks

1 Answer

Remotekey will not work. dashboard indication not lit.only powere steering light no clock or temperature lit. all fuses ok

A fuse can blow but physically look intact. How did you verify the fuses were ok? It could be that the 40A fuse 8 in the engine compartment fuse box has blown.
This supplies multiple circuits which are themselves individually fused in the consumer box inside the car.
The smaller 15A fuse 15 in the consumer box would normally blow under these circumstances but f the horn does not work as well and there are other things you have not listed that do not work like brake lights or headlights, it is definitely the under bonnet fusebox where the problem lies.
Good luck.

Jul 28, 2014 | 2007 Suzuki Swift 1.3

1 Answer

2003 jeep grand cherokee will not turn over

Constant 12-volt power is applied through 40 A FUSE 8 in the power distribution center (PDC) to the engine starter motor relay and through 40A fuse 14 to the ignition switch. If the park/neutral position switch is connected to ground, turning the ignition switch to START causes 12 volts to pass through 10A fuse 31 in the junction block and the engine starter motor relay coil to close the relay and apply 12 volts to the starter. Any of the parts mentioned could be open or defective.

Apr 01, 2014 | Cars & Trucks

1 Answer

I have a 2003 mitsubishi lancer. Everytime I try to turn my key from the ignition to start my car my fuse 4 (40A) blows up I replaced it twice but the new fuse just keeps blowing up:/ what's going on?...

There is a major electrical fault that keeps blowing the fuse. The fuse protects that part of the electrical circuit, 40 amps is heavy electrical circuit, it it wasn't protected by a fuse it car could catch on fire.
You need to get an auto electrician or your Mitsubishi service center to locate the fault and repair.
If you had a wiring diagram for your car then you can trace the wiring from the 40A fuse to the various components to locate the wiring fault or component fault.

Dec 30, 2012 | Cars & Trucks

1 Answer

I have a 1993 ford explorer, every time i turn the ke to the run position, it blows the ignition 60amp maxi fuse under the hood. The first time this happened, I replaced the fuse and the SUV ran fine for a...

I'm no expert but when you turn key to run position, this turns the fuel pump on if the pump is faulty i would think it would blow the fuse also. Or its your theory a short in the ignition system wiring.

Mar 20, 2011 | 1993 Ford Explorer Limited

1 Answer

2000 Grand Voyager blowing the ignition fuse

Was the old fuel pump bad? It might be worth the cost to replace the ignition switch. The wires to the fuel pump would be a second guess if the old pump was bad and burnt the wires before the fuse went. When you eliminated the fuel pump you also eliminated the wires to the pump and it started. Then you replaced the pump, but not the wires. The ignition switch is the other end of the circuit.

Jun 08, 2009 | 2000 Chrysler Grand Voyager

1 Answer

30 amp ignition fuse in engine compartment blows at start

It sounds like a bad ignition switch or something is grounding out.Try to isolate the problem to key positions.See if the fuse blows when you turn the key to ACC(when your dash lights come on without starting)If the fuse does not blow then when you go to start it and it blows it could be one of many problems,the more common ones could be ignition switch,wiring,starter relay,starter soleniod,or perhaps the starter itself is shorting out,this can sometimes happen when a starter goes bad.

Apr 12, 2009 | 1996 Hyundai Accent

1 Answer

The big 40A fuse under the hood keeps blowing when

youll have to probe that elec.circuit to find what is causing your short

Feb 25, 2009 | 1998 Chevrolet Blazer

Not finding what you are looking for?
1999 GMC Suburban Logo

251 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

85223 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides