Truck will not start unless Jumped.

Asked by Urbex804 Sep 14, 2016 at 05:55 AM about the 1998 GMC Sierra 1500 C1500 SLE Extended Cab SB

Question type: Maintenance & Repair

This is a problem that has been driving me
up a wall, and I cannot for the life of me,
Figure it out. '98 GMC Sierra with the 305
5.0 stock motor. The truck will only start if I
have it hooked up to jumper cables, and it
gets a jump. Will run fine, but as soon as i
turn it off, and try to crank it again, without
the cables, its dead. Battery is brand new,
alternator passed tests, and starter is new
as well.

2 Answers

44,755

it could have bad connections from the battery to the starter which is draining current- that fuel injected engine needs a lot of battery power to get it to crank and fire- not like the old analog engines which would fire up even with a low battery- also, make SURE the battery and alternator are good- and that the starter is good and not drawing too much current- even brand new batteries have been known to have dead cells- good luck

1 people found this helpful.

I gotta question alright I got a 94 gmc 5 speed c1500 4.3l and it's trying to start up without the key even in it

Your Answer:

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,280
  • #2
    dragonflyoffshore
    Reputation
    11,440
  • #3
    John Saffrahn
    Reputation
    11,410
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
222 Great Deals out of 9,112 listings starting at $2,900
Used Ford F-150
363 Great Deals out of 12,802 listings starting at $599
Used Chevrolet Silverado 2500HD
39 Great Deals out of 1,814 listings starting at $1,000
Used Dodge RAM 1500
85 listings starting at $2,500
Used Toyota Tacoma
43 Great Deals out of 684 listings starting at $9,975
Used GMC Yukon
17 Great Deals out of 941 listings starting at $5,998
Used Chevrolet Tahoe
18 Great Deals out of 859 listings starting at $9,980
Used Ford F-250 Super Duty
31 Great Deals out of 720 listings starting at $4,290

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.