ECM -1 FUSE BLOWING

Asked by Jul 31, 2009 at 04:45 PM about the 1999 Chevrolet Tahoe 4 Dr LT 4WD SUV

Question type: Maintenance & Repair

Hi, I own a 1999 chevy Tahoe with a 5.7 engine. Driving on the highway tuesday morning the truck went dead with no warning. I initialy thought it was the fuel pump but noticed the blown 20 amp ECM - 1 FUSE. I pulled the computer out and the fuse still blows, so I pulled the plug on the coil, and crank sensor and it is clear. I reconected them and it is still clear but won't start. Any help would be appreciated. Thanks in advance, Tony

10 Answers

65

I think your fuel pump actually is going and thats what may be blowing that fuse, also check your fuel filter and see if its plugged

5 of 5 people found this helpful.
50

The oil pressure switch is linked to your fuel pump fuse..Check that first then rule out your fuel pump.

5 of 5 people found this helpful.
265

I recommend chasing down the pink wiring powering the PCM, Ign Coil, Ign Control Module, Crankshaft Position Sensor, and the injectors. I spent most of today doing so and found the main wiring harness resting on a very hot EGR crossover tube. burned through the plastic conduit and melted the insulation off 2 wires that were shorting together. this would be to the drivers side and toward the rear of the throttle body approximately 5 inches, should anyone else be experiencing the same problem. (I realize the original poster has probably resolved this issue by now, but figured I'd post this for anyone new)

21 of 21 people found this helpful.
10

What do I do now

1 of 1 people found this helpful.
10

I need help

70

Hi my name is Mike I just had a transmission installed on Friday after the installation I drove it around the block and back left again to give it a highway test and went dead on me, come to find out my fuel pump fuse blew and keeps blowing not allowing the the truck to start, what could be the problem?

7 of 7 people found this helpful.
265

They probably didn't clean the contacts on your grounds, or installed them to a dirty connection.

130

my ECM fuse kept blowing on mine as well. found about 5 wires cooked onto the exhaust manifold on the passenger side. (the stupid clip that holds the wire conduit failed) about an hour of replacing the sections of cooked wires and i'm down the road again.

3 of 3 people found this helpful.
100

I was going 80 down the freeway when truck just turns off... Finally after a day of searching and replacing, fuel pump, fuel pump relay, and ECM. I found where wires were glued to exhaust manifold just below the alternator. Only one wire looks cooked... Replaced fuse and did NOT blow for the first time after 5 fuses. Now that this seems fixed it still won't start. The fuel pump still won't engage. Wft? I didn't replace any burnt wires. I will try cutting out the 2 inches of burnt wiring now...

1 of 1 people found this helpful.
40

I have a 99 Yukon truck was running turn it off in it wouldn't crank fuel pump wouldn't come on so I replace the fuel pump relay I notice a burnt on 87a didn't no anything about ECM so change fuel pump it still didn't come on so I check ECM FUSE it was blowed put one in there pump came on turned truck over blowed fuse again so I don't no where to start at about ECM

4 of 4 people found this helpful.

Your Answer

Add photo

Related Questions

  • ECM -1 FUSE BLOWING 10 answers

    Hi, I own a 1999 chevy Tahoe with a 5.7 engine. Driving on the highway tuesday morning the truck went dead with no warning. I initialy thought it was the fuel pump but noticed the blown 20 amp ECM - 1...

    1999 Chevrolet Tahoe 4 Dr LT 4WD SUV

    -

    Maintenance & Repair

  • Ecm-1 fuse keeps blowing 1 answer

    If I held the gas at one spot for about 4 seconds it would start running bad like it was flooding out but if i let off and have it gas again it it will run right for about 4 seconds or i could flo...

    1997 Chevrolet C/K 1500 Silverado Extended Cab SB 4WD

    -

    Maintenance & Repair

  • Ecm 1 fuse blowing 1 answer

    As soon as I turn the key on my 1999 s10 blazer the ecm 1 fuse blows what could cause this? Plugs cap rotor wires and crankshaft sensor have all been replace.

    1999 Chevrolet Blazer 2 Door LS 4WD

    -

    Car Customization

  • 2003 tahoe with bose system radio fuse keeps blowing 5 answers

    while driving my radio just died found fuse blown replaced fuse radio worked for 5 min and blown fuse again , removed radio trim and lower console trim below steering removed brackets to see if wirin...

    2003 Chevrolet Tahoe LT

    -

    Maintenance & Repair

  • my '09 tahoe keeps blowing the 30A fuse I'm trying to replace. The fuse is for the sun roof which is stuck in the open position. When replacing the fuse it just blows each time. 3 answers

    My kids borrowed the car for a parade and when was returned the sunroof wouldn't close, it wouldn't budge. So i checked the fuse it looked like it was blown so I replaced it with another 30A fuse a...

    2009 Chevrolet Tahoe LT2 4WD

    -

    Maintenance & Repair

Tahoe

Looking for a Used Tahoe in your area?

CarGurus has 31,361 nationwide Tahoe listings starting at $1,500.

ZIP:

Search Chevrolet Tahoe Questions

Chevrolet Tahoe Experts

#1 Tom Demyan
Tom Demyan
Reputation 810
#2 Rowefast
Rowefast
Reputation 800
#3 Lucia Taylor
Lucia Taylor
Reputation 490
View All

Related Models For Sale

Used GMC Yukon
382 Great Deals out of 19,299 listings starting at $2,000
Used Chevrolet Suburban
300 Great Deals out of 19,514 listings starting at $1,800
Used Cadillac Escalade
195 Great Deals out of 10,972 listings starting at $3,200
Used Chevrolet Silverado 1500
1,764 Great Deals out of 181,202 listings starting at $250
Used Ford Expedition
438 Great Deals out of 24,829 listings starting at $1,150
Used Ford Explorer
928 Great Deals out of 70,253 listings starting at $997
Used Ford F-150
2,058 Great Deals out of 207,340 listings starting at $1,499
Used Toyota 4Runner
260 Great Deals out of 19,021 listings starting at $2,500
Used GMC Yukon XL
209 Great Deals out of 12,378 listings starting at $2,999
Used Jeep Grand Cherokee
1,027 Great Deals out of 72,252 listings starting at $700
Used Dodge Durango
267 Great Deals out of 21,292 listings starting at $1,499
Used GMC Sierra 1500
760 Great Deals out of 69,126 listings starting at $1,850

Used Cars For Sale

2017 Chevrolet Tahoe For Sale
40 Great Deals out of 14,869 listings starting at $35,340
2016 Chevrolet Tahoe For Sale
51 Great Deals out of 2,236 listings starting at $31,643
2015 Chevrolet Tahoe For Sale
37 Great Deals out of 2,313 listings starting at $24,995
2014 Chevrolet Tahoe For Sale
17 Great Deals out of 621 listings starting at $11,995
2013 Chevrolet Tahoe For Sale
45 Great Deals out of 1,364 listings starting at $10,795

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.