Question about GMC Sierra 2500

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No voltage going to the coil packs - Sierra 2500 GMC Cars & Trucks

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What year? has the ignition starter switch been tested, do u mean the positive side of the coil packs? have you checked the fuses under the hood for the system, they are the ECM fuses, do u have any fault code in the powertrain control modules memory?

Posted on May 05, 2010

  • yadayada
    yadayada May 12, 2010

    I asked questions to try and help and u give me this rating?

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Posted on Jan 02, 2017

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SOURCE: #6 misfire , coil pack has proper voltage. swapped

did you replace the plug..its most likely culprit

Posted on Jan 06, 2011

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2 Answers

On a 2006 Dodge Gran Caravan 3.8, I have no spark on #6 contact on coil pack, when pulling of the boot. Do coil packs go bad? Any other possibilities?


My thinking is, if all the other cylinders have spark, the coil pack is faulty. I'd also change spark plugs and plug wires. Check good primary voltage to coil pack. I didn't think to look for dedicated ground, but, check that also, where applicable.

May 26, 2017 | Dodge Cars & Trucks

1 Answer

Isuzu 2ltr bakkie nmbr 2 and 3 no spark?


post 3, adds, no spark , 2/3 (and still no year, no country stated)
bad coil pack?
wired wrong, this pack.
no photo of the engine, nor real name of it, Petrol.
btw, we dont have "BAKKIE" here. not a single one.
nor KB trucks, either.
what spark system this car has, im clueless.
4 coils or 1 pack.? if one pack , replace all spark wires
if one pack system , if either 2/3 wire opens, both cylinders go dead. try new spark wires. high voltage,

or you measured spark wrong, on 1 pack car.
it takes 2 spark plugs do do that. 2 good plugs and 2 good wires,
#2 and #3, due to the fact they are wired, in SERIES.
see its called wasted spark system, with 1 coil pack and no distributor..
the testing is unique. on this, setup.
try new spark plugs, gapped correctly
and 4 new HV wires,
I bet its go. if not the coil pack is toasted.

Dec 05, 2016 | Isuzu Cars & Trucks

1 Answer

2000 4 cyl eclipse no power to one coil pack any ideas?


Looking OK is not the answer. Go to a wrecking yard, get another coil pack and try it. If you mean there is no power to the pack then get a pal and an electrical tester and check the continuity of the supply. Be careful, the voltages at the coil are high enough to kill.

Feb 01, 2015 | 2000 Mitsubishi Eclipse

1 Answer

Why no spark at coil pack


you will have to check for power and ground and reference at the coil pack. if these are good then the coil pack is no good. check for codes in ECM there could be a crank code set. if one of the voltage checks is bad then you will have to find were the lose of voltage is and repair. note the ground for the coil circuit is controlled by the ECM with what is called coil drivers.

Sep 03, 2014 | 1996 Dodge Neon

1 Answer

2002 v6 chevy silveraldo keeps burning coil packs quickly please help


coil packs and coils burn out from over voltage supplied to them --Ie 12 volts to a 7.5 volt coil. I would check the voltage in the supply wire connections and check the required voltage from the cpu /ECM. Run fault codes and look for a short to ground situation

Sep 28, 2013 | Chevrolet Chevy Cars & Trucks

1 Answer

1 coil pack is not working but the other two work just fine 92 cutlass supreme 3.1


Make sure you are getting voltage to the coil pack (low voltage signal from the computer. You can measure the connector with a 12v meter with the key turned on to see if you have voltage.

Apr 30, 2012 | 1992 Oldsmobile Cutlass Ciera

1 Answer

2002 taurus 3.0 ohv. no spark at spark plugs. new coil pack that tests good on the primary and secondary. New ignition switch, new computer, new camshaft position sensor. The coil pack is receiving battery...


Do you know what the 5 volt reference voltage is ? A4 CHECK VREF VOLTAGE TO THROTTLE POSITION (TP) SENSOR
  • Disconnect TP sensor.
  • Key on, engine off.
  • Measure voltage between VREF and SIG RTN circuit at the TP sensor harness connector. GO to Pinpoint Test DH to refer to the schematic.
Is voltage between 4.0 and 6.0 volts?
Check out videos on youtube .

Jul 29, 2017 | Ford Taurus Cars & Trucks

2 Answers

My truck is missing on the forth and fifth


things that can cause it to miss.
fouled plug (checked)
bad wires(checked)
coil pack(checked)
ignition signal to coil pack( switch old coil pack to a working cylinder to make sure its good and you may find a possible short in the wiring to the coil pack) alternately check the voltage to the wires going to the coils make sure like colors have like voltages. im not too big into ford trucks but thats a good start for most vehicles
possibly injector stuck open and flooding cylinders
timing could be off

Jul 20, 2010 | 1998 Ford Ranger SuperCab

1 Answer

No spark runns fine then loses spark wait 10 minutes starts


The spark plugs receives power to spark from coil pack.Check the power at the coil pack and also check the voltage at the coil pack with meter.If the coil pack shows proper power as well as voltage then its fault in spark plugs.Otherwise its faulty coil pack.The coil pack receives power from battery.so also check the voltage of the battery it should be exact 12 volt.
If the battery shows low voltage then the battery needs to be re-charged.
Then check out.
Thanks. you can rate this solution and show your appreciation.

May 20, 2010 | 1992 Pontiac Bonneville

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