I have a 99 GMC Sierra 1500. It was broken down and being worked on for some time. Charged the battery and it started right up. Moved it to the driveway and parked it to do a maintanence check and fluid check. When moving to the driveway it began spewing raw gas out of the exhaust pipe, and shaking a bit in the front end. Put fuel injector cleaner in the tank, charged the battery, the truck turned over once and was knocking horribly in the front end. Continued to run when I hit the accelerator. As soon as I let off it died, and won't turn over at all now. Turn the key over and it will click 1 time. I can't seem to pinpoint the issue at this time. While trying to crank, the starter will jump, and the belt on the alternator tries to pull over. Nothing. Ran fine when parked, ran to the driveway with no issue other than the small shimmy and the raw gas. Wondering if this is something small I'm missing or if it's something I don't want to dig into.

Asked by Pollardr11 May 07, 2018 at 04:24 PM about the 1999 GMC Sierra 1500 SLE 4WD Extended Cab LB

Question type: Maintenance & Repair

3 Answers

34,720

Raw gas out of the exhaust should of tipped you off there's a major problem. remove the spark plugs and see if you can turn the engine over by hand,don't crank it you may get a nice fire.See if fuel runs out of the cylinders.

Didn't find the raw gas until after I had it running. Someone mentioned it was the injectors. (Maybe one was stuck) Otherwise I would have stopped there. I'll try this tomorrow! Thank you!

I should say didnt catch the raw gas until it was running and parked in the current spot in the driveway.

Your Answer:

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 68,462 nationwide Sierra 1500 listings starting at $2,500.

ZIP:

Own this car?

Share your experience with others.

1999 GMC Sierra 1500

Review another car

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,800
  • #2
    dragonflyoffshore
    Reputation
    11,740
  • #3
    John Saffrahn
    Reputation
    11,680
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Silverado 1500
4,087 Great Deals out of 121,276 listings starting at $1,999
Used Ford F-150
6,451 Great Deals out of 161,390 listings starting at $993
Used Toyota Tundra
1,054 Great Deals out of 31,295 listings starting at $2,250
Used Chevrolet Silverado 2500HD
1,041 Great Deals out of 38,994 listings starting at $2,977
Used GMC Yukon
659 Great Deals out of 15,540 listings starting at $3,995
Used Toyota Tacoma
2,242 Great Deals out of 53,790 listings starting at $4,995
Used Dodge RAM 1500
59 Great Deals out of 1,404 listings starting at $2,500
Used Ford F-250 Super Duty
1,267 Great Deals out of 50,692 listings starting at $2,995
Used Chevrolet Tahoe
1,364 Great Deals out of 34,042 listings starting at $1,800

Used Cars for Sale

2024 GMC Sierra 1500 For Sale
220 Great Deals out of 23,395 listings starting at $25,310
2023 GMC Sierra 1500 For Sale
230 Great Deals out of 2,899 listings starting at $27,487
2022 GMC Sierra 1500 For Sale
146 Great Deals out of 1,752 listings starting at $24,150
2021 GMC Sierra 1500 For Sale
291 Great Deals out of 3,594 listings starting at $15,995
2020 GMC Sierra 1500 For Sale
205 Great Deals out of 2,310 listings starting at $13,995

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.