No spark in 2004 Chevy Silverado 1500

20

Asked by Jul 17, 2016 at 07:13 PM about the 2004 Chevrolet Silverado 1500 Long Bed 4WD

Question type: General

My truck just quit running...had to be towed to the shop. Diagnosis is no
spark. Replaced the coil, distributor cap, rotor, crank sensor and ignition
module and still nothing.  Engine is getting plenty of fuel but won't fire. If
anyone has any suggestions, I'm ready for anything as it's been over 2 weeks
without my truck.

20 Answers

16,810

Check for blown engine fuse in fuse box under hood. And also did you replace the camshaft sensor ?

1 out of 1 people think this is helpful.
Best Answer
20

The fuse check is next....camshaft sensor then ECM. I had the fuel pump replaced about a week before the truck just quit, for the same symptoms. It ran fine for that week, then just died again.

1 out of 1 people think this is helpful.
16,810

Will it start if you spray some carb or throttle body cleaner into throttle ?

1 out of 1 people think this is helpful.
Best Answer
20

There's no spark from the wires/plugs...won't start no matter what they try

1 out of 1 people think this is helpful.
16,810

No check engine light ?

20

Nope....it just died without warning. What ever happened to real vehicles? Change the points, plugs, rotor, distributor cap and you were good to go; worst case scenario was a starter.

16,810

They are just trying to get us to take vehicle to the dealer to get it worked on.

1 out of 1 people think this is helpful.
16,810

Have your vehicle scanned any way for codes because if the check engine light was on at one time and now it is off it still stores the code in it's memory.

1 out of 1 people think this is helpful.
20

The check engine light didn't come on.....if the truck won't run, can they scan it anyway to diagnose the problem? Also, can I take it to a Ford dealer ((half a mile tow), or do I need to have it towed to a Chevy dealer (30 miles away)?

16,810

You maybe able to rent the scan tool from the local parts store like auto zone I no they rent tools may be able to rent scan tool also.

1 out of 1 people think this is helpful.
20

I'm gonna call the shop where the truck is and see if they have already scanned it...if not, I'm off to Auto Zone or Napa. Thanks so much for your help!! Just curious....is there any test to find out if the ECM is bad?

16,810

The check engine light scan should tell you everything you need to no.

20

Can you run a check engine light scan without the vehicle running?

16,810

Always do the scan with the vehicle off.

20

Okay...spoke with the mechanic that's been working on the truck. He scanned it 1st thing, and no codes came up. He has checked/replaced everything and still no spark. The distributor cap turns inside when cranking the engine, but no spark. The only thing that hasn't been replaced is the ECM. Any thoughts?? Thanks!

16,810

I no this is not going to make any sense to you since vehicle is spinning over good but install a new battery then try and start. About 39 years ago when I was a teenager had a 69 firebird one day would not start turned over good and strong but would not start found out just like you had no spark tried everything so out of curiosity replaced with a new battery and she fired right up still to this day do not understand why but it did. Not saying this is your problem but hey give it a try. It might surprise you.

20

Rather than spend $$ on a new battery (it's only a year old)...can I try jumping it to see if (hopefully) that's the problem?

16,810

Does not have to be a new battery but a battery that you know will start another vehicle or just try recharging that battery and yeah give that a try jumping vehicle at this point I know you are willing to try anything.

20

I'll stop by the shop tomorrow and tell Charlie to give it a try...he's as frustrated as I am over this...he always says" Ain't nothin' I can't fix"....I'll keep you posted...and thanks!

20

Well, the saga continues....replaced the ECM (pre-programmed) and STILL no spark; that was after jumping it, which didn't work either. Today he's going after the wire harness which is off the crank sensor, looking for chafing or cracks. If you can think of anything else it could be, please let me know. Thanks

Your Answer

Add photo

Related Questions

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 148,871 nationwide Silverado 1500 listings starting at $1,800.

ZIP:

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 1,650
#2 Silverado_owner_2006
Silverado_owner_2006
Reputation 1,440
#3 tenspeed
tenspeed
Reputation 1,350
View All

Related Models For Sale

Used GMC Sierra 1500
1,149 Great Deals out of 57,873 listings starting at $2,495
Used Ford F-150
3,381 Great Deals out of 204,925 listings starting at $1,273
Used Dodge Ram 1500
536 Great Deals out of 12,902 listings starting at $1,800
Used Chevrolet Silverado 2500HD
421 Great Deals out of 28,741 listings starting at $2,295
Used Toyota Tundra
663 Great Deals out of 28,152 listings starting at $1,599
Used Chevrolet Tahoe
1,075 Great Deals out of 31,905 listings starting at $1,495
Used Toyota Tacoma
757 Great Deals out of 33,289 listings starting at $2,988
Used Chevrolet Colorado
331 Great Deals out of 16,931 listings starting at $2,195
Used Ford F-250 Super Duty
479 Great Deals out of 42,649 listings starting at $2,850
Used Chevrolet Silverado 1500HD
14 Great Deals out of 285 listings starting at $4,700
Used Chevrolet Silverado 2500
6 Great Deals out of 256 listings starting at $4,200
Used GMC Sierra 2500HD
134 Great Deals out of 13,609 listings starting at $1,500
Used Dodge Ram 2500
176 Great Deals out of 5,621 listings starting at $2,395

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
27 Great Deals out of 78,832 listings starting at $19,398
2016 Chevrolet Silverado 1500 For Sale
332 Great Deals out of 17,556 listings starting at $18,657
2015 Chevrolet Silverado 1500 For Sale
343 Great Deals out of 7,610 listings starting at $16,000
2014 Chevrolet Silverado 1500 For Sale
480 Great Deals out of 11,064 listings starting at $12,998
2013 Chevrolet Silverado 1500 For Sale
274 Great Deals out of 6,517 listings starting at $9,950