Question about 1992 GMC Sonoma

1 Answer

Blows fuses i have a 92 gmc sonoma and the ecmb fuse keeps blowing out but if u unhook battery for awhile and put a new fuse in the truck will run for awhile with service soon light on after a few will blow fuse again

Posted by on

  • 1 more comment 
  • Anonymous Mar 15, 2014

    dies at stop sign constantly blows 20 amp fuse ecmb

  • Anonymous Mar 16, 2014

    ecmb fuse blows as soon as you turn key switch200

  • Anonymous Mar 22, 2014

    whats an easy way to find a skint wire that keeps blowing a 20 amp fuse for your lamp in a 1992 gmc 1500


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 115 Answers

Generally speaking, a fuse 'blows' because too much current is drawn through that circuit. In this case I suspect a 'short-to-ground' or a bad voltage regulator (inside the alternator in a GMC). First, I would check the alternator's output voltage. Easiest just to look at your guage. Up to 14 1/2 volts is normal on a GM (with truck running), if it's higher - you need a new alternator. If it's under 14 1/2 volts, you
MUST find the short. Unless you have the specialized tools, (short-circuit finder, voltmeter, wiring
diagrams, etc.) this should be left to a competent automotive electrical shop. It could be as simple as a wire's insulation worn off or a short 'inside' the ECM (you truck's engine control computer). No matter what, one trip to a competent mechanic will probably be cheaper than continually replacing the computer and/or towing bills. Good luck!

Posted on Nov 24, 2008

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Fuse keeps blowing

Once a fuse blows & you replace it-- ONE Time--
then you stop

You go to wiring diagrams of the circuit with the
blown fuse & start your testing

Aug 11, 2014 | 1994 GMC Sonoma

4 Answers

Could a 1000 amp battery blow fuses in a 1999 blazer

Likely there is a blown fuse but a battery won't blow a fuse on its own. Change any blown fuses and if that fixes the issue and the fuse doesn't blow for awhile then your ok but if the fuse blows quickly then you have an issue with the electrical system and you need to take it to a shop

Apr 17, 2014 | 1999 Chevrolet Blazer

1 Answer

Fuse blows on blower fan, where is the fan relay located


Mar 02, 2014 | GMC Sonoma Cars & Trucks

1 Answer

Fuel pump sensor draining battery?

The things that you need to do are:
1. Drop the gas tank, this is not easy and it is dangerous. Make sure that it is empty and that there are no sources of ignition around. You need to unhook lines that connect to it that are both fuel and electric. The big lines to the filler neck are hard to unhook and when you are done you should seal them with permatex.
2. The battery draining issue requires that you use an amp meter on the battery in series with the cable. Then you start pulling fuses to see what makes the reading drop. Make sure that you have a meter that will read amperage and not milliamps or you will blow out the meter.

Dec 02, 2013 | 2001 GMC Sonoma Extended Cab

1 Answer

Truck runs ,couple seconds ,blows 20 amp ecbm 2 fuse ,,3 back to back .replaced fuel filter, plugs and wires start right up but keeps killing .had battery tested and charged ?

must have a short probably in steering column dad had blazer in shop doing same thing we found short in ignition switch

Sep 23, 2012 | Cars & Trucks

1 Answer

1992 gmc sonoma fuse box diagram with location of fuses

On my 1992 GMC V-6 Sonoma the fuse panel is located under the left end of the dash board. Fairly close to the foot operated parking brake. There is a small panal covering it, that needs to be unscrewed to be able to see it. Most fuses are identified as to what they are protecting.
The best way to service these fuses is by opening the truck door, with your knees on the ground-- or by laying on your back on the seat with your head in the floor near the parking brake. The truck also has a few inline fuses on wire running directly to the item being protected. If you don't see a fuse in the fuse block for what is not working, find the wire under the hood going directly to the accessory. In-line fuses sometimes look like bulges in the wire, under tape., or they can be straight forward and look like plugs, with a fuse inside. When replacing fuses, use the same size - don't increase the amps, or You'll burn up what you are trying to protect with the fuse.I bought my 92' ,new, when it came out. Mine is the V-6 model. Other versions of the 92, may have different locations for fuses.

Jan 09, 2012 | 1992 GMC Sonoma

1 Answer

85 gmc jimmy ecmB fuse keeps blowing

Have you fuel pump checked, as this could be a possible cause.

Sep 02, 2011 | 1985 GMC Jimmy

1 Answer

My ecmb fuse keeps poppin in my 1993 gmc sonoma

Usually when this happens, there is too much power being distrubuted to the parts that the fuse is linked to. First, try using a hire amp fuse, or instead of using only a fuse, try installing a relay to run with it as well. The relay will take the majority of the power, allowing the power to the unit to be distributed evenly, and the fuse will stop being blown.

If this is not an option, try using a higher amp fuse - if it calls or a 20, use a 30 and so on.

It may be possible that you have faulty connection on the battery, ground and/or starter. Make sure these are all in good repair. Also ensure that you have the correct alternator for this vehicle installed - an alternator that produced more charge than necessary for this vehicle will cause many components to malfunction as they will receive more power than what their limited, such as the fuse in question; also make sure the battery is sufficient (big enough), to support such components, as too little power will cause this as well.

Please let me know if you need further assistance.


Guru, Premium Expert @

Jun 14, 2010 | 1990 GMC Suburban

1 Answer

I have a 92 suburban the ecmb fuse blows as soon as i put in a fuse

the power wire is going to ground check around the exhaust manifolds for a melted wire and the back of the heads

May 10, 2010 | 2003 Chevrolet Suburban 1500

2 Answers

Keep blowing the ecmb fuse in my 1991 s-10

check your grounds & the fuel pump connections.the ground should run to the right rear of the motor. look at the wires back to the motor on the frame for anything that may have nicked a wire or a rub thru. You have a short and i belive it shut down if you hit a bump. loose or fraid wire some place. Best of luck & keep us posted on your fix.

Mar 10, 2010 | 2000 GMC Jimmy

Not finding what you are looking for?
1992 GMC Sonoma Logo

504 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

63456 Answers


Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21981 Answers

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

Answer questions

Manuals & User Guides