I have a 1999 GMC Serria 1500 series truck I took out my 305 engine and put in a 350 engine now it wants to stall

Asked by Mary Jan 18, 2016 at 06:50 AM about the 1999 GMC Sierra 1500 SL 4WD Standard Cab LB

Question type: Maintenance & Repair

I put all most everything new in the motor even a computer and when I did it
runs worst. Please help

1 Answer

223,755

I believe it would run some worse since all the computer knows is neutral settings so to speak, and needs time to run its full diagnostics. But seems to be an issue tho. What 350 engine "5.7L" was put in? what year? new or old? The Vortec set-up?

Your Answer:

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,810
  • #2
    dragonflyoffshore
    Reputation
    11,740
  • #3
    John Saffrahn
    Reputation
    11,690
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
229 Great Deals out of 5,924 listings starting at $3,995
Used Ford F-150
313 Great Deals out of 15,424 listings starting at $1,954
Used Toyota Tundra
43 Great Deals out of 1,175 listings starting at $5,995
Used Chevrolet Silverado 2500HD
26 Great Deals out of 1,204 listings starting at $8,999
Used GMC Yukon
22 Great Deals out of 719 listings starting at $5,998
Used Dodge RAM 1500
7 Great Deals out of 73 listings starting at $4,000
Used Toyota Tacoma
51 Great Deals out of 1,040 listings starting at $8,708
Used Chevrolet Tahoe
16 Great Deals out of 717 listings starting at $5,995
Used Ford F-250 Super Duty
28 Great Deals out of 1,180 listings starting at $8,995

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.