99gmc savana conversion van idles high and runs ruff

Asked by May 26, 2017 at 11:51 PM about the 1999 GMC Savana G1500 Passenger Van

Question type: Maintenance & Repair

The original motor was replaced. Then the computer,
distributor cap, oil change, and tune up. Now that it finally
cranks and starts, it idles high and runs rough. The motor
came from a 1997 chevy express in which the
transmission went out. Please help!!

3 Answers


clean the throttle plate, the idle air valve needs cleaned or replaced, also run sea foam [auto parts] threw the tank, some in oil also , removes gum deposits

Ty will try this stuff in the morning.


atta girl

Your Answer:


Looking for a Used Savana in your area?

CarGurus has 954 nationwide Savana listings starting at $3,995.


GMC Savana Experts

  • #1
    Calirats Gomez
  • #2
  • #3
View All

Related Models For Sale

Used GMC Savana Cargo
53 Great Deals out of 2,837 listings starting at $1,999
Used Chevrolet Express
32 Great Deals out of 4,004 listings starting at $1,500
Used Chevrolet Express Cargo
89 Great Deals out of 4,838 listings starting at $2,450
Used GMC Sierra 1500
652 Great Deals out of 56,442 listings starting at $888
Used Chevrolet Suburban
289 Great Deals out of 21,266 listings starting at $1,950
Used Chevrolet Tahoe
661 Great Deals out of 37,633 listings starting at $1,950
Used Cadillac Escalade
255 Great Deals out of 11,922 listings starting at $2,990
Used Chevrolet Silverado 1500
1,843 Great Deals out of 155,716 listings starting at $1,490
Used Chevrolet Astro
183 listings starting at $1,700
Used Ford F-150
2,258 Great Deals out of 183,135 listings starting at $1,200
Used GMC Yukon
326 Great Deals out of 23,705 listings starting at $2,000

Used Cars For Sale

2018 GMC Savana For Sale
358 listings starting at $26,453
2017 GMC Savana For Sale
157 listings starting at $24,995
2016 GMC Savana For Sale
28 listings starting at $18,041
2015 GMC Savana For Sale
30 listings starting at $16,994
2014 GMC Savana For Sale
70 listings starting at $12,995

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.