My 1992 GMC Sierra will start but will only run for 20 seconds exactly.

Asked by 808gordon Apr 16, 2015 at 02:26 PM about the 1992 GMC Sierra 1500

Question type: Maintenance & Repair

My 1992 GMC Sierra will start but will only run for 20 seconds exactly. Change fuel pump, fuel relay, tested computer. Swapped computers, Replaced Cap and it still runs for only 20 seconds.

3 Answers

cbpatterson answered 8 years ago

My 1994 GMC Is doing the same thing. If I unhook the small wire from the altinator it will run but I still don't know how to fix it.

Mark helpful

Your Answer:

Related Questions

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 8,257 nationwide Sierra 1500 listings starting at $3,000.

Postal Code:

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,340
  • #2
    dragonflyoffshore
    Reputation
    11,500
  • #3
    John Saffrahn
    Reputation
    11,440
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
325 Great Deals out of 13,693 listings starting at $3,800
Used GMC Yukon
12 Great Deals out of 972 listings starting at $3,000

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.