Truck will not start... Cranks over and over, keeps on cranking, back fires... Where do I begin to look for issue ???

Asked by Chapel Jan 03, 2013 at 09:29 AM about the 1998 GMC Sierra 1500 C1500 SLE Extended Cab SB

Question type: Maintenance & Repair

1998 Gmc 4.3 Vortec... Got truck
started once, ran a few days like it
had no problems, cut it off in drive
way went back next day, would not
start, same issue... Im puzzled... Blew
the muffler apart trying to start it...
Big boom !!!

shaggy1981 answered 11 years ago

had same isuue with a deawoo (i know try and stop laughin, whata pile of junk)anyhow. it started to bring me home from work, next mourning same thing. big back fire, muffler in pieces. turn out the timing belt had gone bad. my suggestion is to check the timing with a light, hope this helps.

Mark helpful

Paisano answered 11 years ago

There is a tsb for a no start condition or poor idle back fire etc. The cranshaft position sensor has been known to cause this

2 people found this helpful.

Mark helpful

69,085

John answered 8 years ago

If timing turns out to be ok then check fuel pressure.

3 people found this helpful.

Mark helpful

Your Answer:

Truck will not start... Cranks over and over, keeps on cranking, back fires... Where do I begin to look for issue ??? 3 Answers

1998 Gmc 4.3 Vortec... Got truck started once, ran a few days like it had no problems, cut it off in drive way went back next day, would not start, same issue... Im puzzled... Blew the muffler ap...

1998 GMC Sierra 1500 C1500 SLE Extended Cab SB

-

Maintenance & Repair
security light not on, but gmc 1500 will not start there is a noise from the cycliinder where the key goes in, my truck was hit and hasn't started since but will turn over, will run if feed gas.. 1 Answer

Truck hit, have tried the security 10 minute on off stuff, but I do not have a yellow blinking light never did... however there is a noise after you turn the key to try and start that is like from the...

2003 GMC Sierra 1500 SLE Extended Cab SB

-

Maintenance & Repair
Truck will turn over but not start 1 Answer

Where is the gas shut off switch on a 2001 GMC 1500?

2001 GMC Sierra 1500

-

Maintenance & Repair
04 gmc sierra 1500 5.3 died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was zero) anyways checked fire none checked injectors they wasnt working either(built fuel pressure then unplugged fuel relay then turned engine over and the pressure stayed the exact same) i assume it might be the crank sensor but i would think it would throw a code, anyways came back this morning and before doing anything for the hell of it i checked the gas cap and tightened it and it fired up perfect three different times and the last time i let it run and it died after bout 45 seconds (fuel pressure reads 55) and after it died its doing the same thing cranks but wont fire or start 1 Answer

died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was...

2004 GMC Sierra 1500

-

Maintenance & Repair
Why will truck not start turn over but wont start 1 Answer

Will turn over but wont start

1998 GMC Sierra 1500 C1500 SL Standard Cab SB

-

Maintenance & Repair

Looking for a Used Sierra 1500 in your area?

CarGurus has 7,842 nationwide Sierra 1500 listings starting at $4,944.

Used Chevrolet Silverado 1500

167 Great Deals out of 7,420 listings starting at $6,995

Used Ford F-150

305 Great Deals out of 13,473 listings starting at $3,888

Used Chevrolet Silverado 2500HD

22 Great Deals out of 1,590 listings starting at $5,990

Used Toyota Tacoma

42 Great Deals out of 780 listings starting at $9,975

Used Dodge RAM 1500

3 Great Deals out of 81 listings starting at $3,990

Used GMC Yukon

9 Great Deals out of 930 listings starting at $6,900

Used Ford F-250 Super Duty

23 Great Deals out of 748 listings starting at $3,990

Used Chevrolet Tahoe

16 Great Deals out of 785 listings starting at $7,499

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. Content will be removed if CarGurus becomes aware that it violates our policies.

Truck will not start... Cranks over and over, keeps on cranking, back fires... Where do I begin to look for issue ???

3 Answers

Your Answer:

Looking for a Used Sierra 1500 in your area?

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

Find great deals from top-rated dealers

Related Models For Sale

Truck will not start... Cranks over and over, keeps on cranking, back fires... Where do I begin to look for issue ???

3 Answers

Your Answer:

Related Questions