Question about 1997 Chevrolet Tahoe

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1997 chevy pickup truck blows ecm fuse

Will run for a bit but now it just pops the fuse every time we put one in

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  • Contributor
  • 71 Answers

Unplug the fuel pump, see what you have.

Posted on Mar 24, 2014

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SOURCE: knock sensor for 1997 chevy C1500 Pickup Truck

Located on right hand side of block (pass side). It is between motor mount and starter.

Posted on Nov 27, 2008

wilsodfarm
  • 986 Answers

SOURCE: blown ecm fuse

unhook the ecm and check if the fuse does not blow,you will know if it is the ecm,Hope this helps

Posted on Sep 06, 2009

  • 740 Answers

SOURCE: 1997 Chevy S10 pickup Fan switch for heater runs on high only.

replace the blower motor resistor located on the heater box were the blower motor is located the wiring to the blower may go to it. This is very easy to locate if you buy the part first.

Posted on Jan 06, 2010

  • 167 Answers

SOURCE: Blowing ECM-B fuses

The ECM-B fuse is a 20 amp fuse, and you should NEVER put a larger fuse in to try to overcome any problem. The oil pressure switch is a secondary concern; there is an idiot light or oil pressure guage in the dash to alert you to oil pressure problems. Under heavy load, such as towing, your engine requires more fuel, and if your fuel pump is going/has gone bad, it cannot supply the demand.
The problem is almost certainly a fuel pump wire harness short, caused by a dying fuel pump. I have both had this problem myself, and repaired it on three other vehicles. On my vehicle, the wire harness had welded itself together when the fuel pump locked up, and the wire harness caught on fire.
The fuel pump is in the gas tank (of course my tank was full), and the tank has to be dropped to access it. The wire harness is modular, with plugs at both ends, and can be bought from the Chevrolet or GMC dealer.
If you put an incorrectly-rated fuse anywhere in your vehicle's electrical system, the WORST place to do it is where you have--the fuel pump circuit. Fuses blow for a reason, and the manufacturer's engineers properly size the fuses for the application at hand. Please don't do that again.
This can be a very dangerous problem and repair, and no, it is not cheap.
Do not attempt to operate this vehicle until you have had the problem properly corrected. Good luck.

Posted on Feb 14, 2010

  • 3 Answers

SOURCE: 1997 S-10 Pickup: 97 chevy s 10 truck fuel gauge not working what co...

im not an expert but my chevy s-10s fuel gauge didnt work for like a year! and my fuel pump just went like a month ago replaced it and voila i have a fuel gauge again!

Posted on May 22, 2010

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1 Answer

Why does my efi fuse keeps popping 1999 chevy prizm


Pull the EFI relay, replace the fuse, and see if it blows when you turn the key on. If it does not turn the key off, reinstall the EFI relay and remove the circuit opening relay/fuel pump relay. Turn the key on. If the fuse blows than we know the problem is One of the O2 sensors, the IAC, the purge solenoid, or the ECM You can unplug the O2 sensors, iac, and purge solenoid. Replace the fuse, turn the key on, and plug them in one at a time until the fuse blows. Replace that component. If the fuse blows with those unplugged than its probaly the wiring and possibly the ECM. let me know what you find and I'll help you more if needed.

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Where is the fuel pump reset button located in a chevy 1997 S10 pickup?


I DON'T KNOW OF ANY RESET BUTTON OR INERTIA SWITCH USED ON GM VEHICLES, USUALLY THEY DO HAVE FUEL PUMP RELAY AND RECIEVE BATTERY VOLTAGE FROM AN ECM FUSE

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Aug 10, 2010 | 1997 Chevrolet S-10 Pickup

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Will not start and checked fuel pump no power to fuel pump i also have blown fuse for ecmb that blows as soon as i replace it


ECM B fuse supplies a constant 12v hot at all times to the VCM/PCM and to the fuel pump relay. The fuse is blowing telling you that there is a short to ground somewhere. Try this, take the fuel pump relay out and put a new fuse in. If it doesn't blow put the relay back in and if it blows then try a new relay. The relay may be shorted to ground internaly. Other wise you'll have to trace the wires to the VCM and the pump relay to look for a chafed wire that's contacting metal. The wire coming from the ECM B fuse is orange and has a splice in it going to the pump relay and the VCM/PCM.
Hope this helps.....Andrew

Mar 28, 2010 | 1999 Chevrolet S-10 Pickup

1 Answer

I have a 97' f150 4.2 eng 2 wheel drive pickup elect. problem


A fuse blown is a short, and a short is a ahort.
The fuse is the ecm so unplug the ecm and see what happens. If the fuse holds with theecm unplugged, then it is your ecm that needs relacement. If it still blows, The short is in the wiring.go to the parts store and pick up and automatic circuit breaker. It plugs in where the bad fuse goes. It will trip and reset itself automaticallly like a flasher until you have located the short. trick, Start with a breaker of amp. examole; if you took out a 20 amp, put in a 10 amp so the breaker trips faster, On and off quicker so you don't have to wait between ressets. If you want to trace the short by the wiring, put a 25 amp or with great caution a 30 amp. That is the limit. The wire will get warm on the 25 and even warmer on the 30. Pay attention that the wire does not get hot. Hopefully yhe 25 will get the wire warm enough for you to follow. Good Luck, Ned. This method is dangerous if you don't pay very close attention using the high amp breaker. There is a risk of fire if the circuit cannot handle 30 amps. In fact, only yuse the 30 amp breaker if the 25 breaks and resets too fast. Good Luck_Ned_

Oct 04, 2009 | 1997 Ford F150 Regular Cab

1 Answer

1996 GMC 1500 Pickup. Keep blowing 20A ECM-B fuse. Replaced Ign Mod,Coil,Cap/Rotor & pickup. Any Ideas Out There? Afraid to go any futher...dont want to ruin these new parts!


if you keep blowing a fuse there's a good chance it's not a faulty part but a short in the main harness most likely under the dash where all the connectors tend to get brittle over time and short out constantly. also check the ecm connection there is a 60 pin type.

May 19, 2009 | GMC Sierra 1500 Cars & Trucks

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

1 Answer

97 chvy 5.0 -ECM B fuse blows - Wont Start - Replaced ALL parts


that red wire is a test lead to jumper the fuel pump to test it.if ecmb fuse keeps blowing my guess is your ecm has a short in it,in that case it can be purchased at oreillys

Mar 28, 2009 | 1997 Chevrolet C1500

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