Question about 1999 GMC Sierra 3500

1 Answer

ECM I fuse keeps blowing in my 1996 1 ton gmc sierra 4x4 with a 454 v8 engine whats causing it

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • GMC Master
  • 2,431 Answers

For the ECM 1 fuse to open you obviously have a short to ground , start with the injector disconnected and see if ECM 1 fuse still blows.If it does disconnect crank sensor, also inspect wires for the injectors or any rub through wires here is a diagram ECM I fuse keeps blowing - cansmo_178.gif

Posted on Sep 09, 2011

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 1996 GMC Sierra what engine wiring harness is interchangeable with this truck


I believe a 96-98 harness from any chevy or gmc would work. V8 to V8 not V6 to V8 the 305 and 350 would be the same harness

Dec 29, 2014 | 1996 GMC Sierra

1 Answer

1997 GMC Sierra, I keep blowing the ECM 1 fuse, I replaced Fuel Pump relay and Fuel Filter. Does the ECM 1 Fuse Pump the Fuel Pump, also disconnected the Fiter turned on the key and no fuel.


ecm1 is injectors not fuel pump ecm-b is fuel pump its more likely to be a faulty relay for the injectors, it would be a similiar design to this
12900_oil_sending_unit_and_fuel_pump_circuit_80-yoo05im5qhid2i2poe1uh03c-5-0.gif this is for the fuel system, relay for the injector is nearly the same.

Nov 03, 2012 | 1995 GMC Sierra C1500

1 Answer

Where is emc located on 1996 gmc sierra 5.0 v8


Hi there:
On 1996 GMC Truck 5.0L SFI 8cyl the Engine Control Computer is located under hood, driver side, front side of shock tower, mounted on upper fenderwell.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Jul 04, 2012 | 1996 GMC Sierra

1 Answer

My 98 gmc 1500 V8 5.0l won't start. Has good spark


Spray starting fluid into the air intake of the engine, if it starts and you have fuel pressure you have no injection or injector pulse as we call it. Check ECM fuse one and two for continuity if it starts with fluid..

May 25, 2012 | 1998 GMC Sierra

1 Answer

91 3/4 ton 4x4,454.idle falls off&dies when stopping or when shifted from fwd to rev. no codes tried iac motor but no change.


You may have a body throttle position senson. You need a scanner to confirm that. You may have a vacuum leak somewhere around the throttle body. You may have a fuel pump getting weak so I would check fuel pressure. You may have an EGR valve that is partially stuck open.

Apr 26, 2011 | 1991 GMC Sierra

1 Answer

Why do I keep blowing a 20A fuse marked ECM-I?


Hi, there is a lot of stuff running on that fuse, so it may be hard to diagnose. If the fuse blows right after starting the truck, you may be able to find the short by unplugging things, putting a new fuse in, turning the key on, and then plugging things back in until it blows. Check for any wires resting on the engine or especially a hot exhaust manifold for a wire with burned insulation. Below is the diagram for the main things powered by that fuse. These include the coil, the injectors, the crank sensor, and the PCM itself. Perhaps one of the injectors has shorted. If that were the case, the fuse would not blow when the key is turned on but only after the truck is running. If you have an ohmmeter, you could check the impedances of all of them to see if one has a lower impedance. Does the truck run at all? What engine do you have? Is the engine light on? The diagram is for the V-6, but I think the wiring for the fuse is similar in the other engines. If it runs OK for a while and then blows the fuse, I would not blame the coil or the crank sensor. Let me konw what you find out.

jturcotte_1075.gif

Feb 20, 2011 | 1996 GMC Sierra

1 Answer

I need the firing order of 1996 gmc engine sierra 5.7liter vortec


For the 1996 GMC SIERRA with 5.7L V8:

Firing Order:
1-8-4-3-6-5-7-2

Cylinders:
.........(back).........
|...8...|........|...7...|
|...6...|........|...5...|
|...4...|........|...3...|
|...2...|........|...1...|
.........(front)

Distributor Connections:
............(back)
Coil--->o
6------->o........o<-------5
4------->o........o<-------3
2------->o........o<-------7
8------->o........o<-------1
.............(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

May 30, 2010 | 1996 GMC Sierra

4 Answers

97 gmc sierra no fuel no spark replaced ign module and pickup coil still no spark


1996 GMC 1500 Pickup.
Replaced Coil, Dist cap/Rotor, Ign Mod & pick-up.
All showed to be bad with OHM meter.

20A ECM-B fuse keeps blowing out and I'm afraid to burn these new parts up....

ANY IDEAS OUT THERE???

Mar 31, 2009 | GMC Sierra 1500 Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

2,220 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

Marvin
Marvin

Level 3 Expert

83850 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22413 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8841 Answers

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

Answer questions

Manuals & User Guides

Loading...