idle rough

csz4296
75

Asked by csz4296 Nov 15, 2012 at 07:40 PM about the 1998 GMC Sierra 2500 2 Dr K2500 SLE 4WD Extended Cab LB HD

Question type: Maintenance & Repair

my truck is idling really rough it dosent seem bad when im driving but when i come to a stop it shakes really bad , or when i first start it  , what can it be ??

3 Answers

John Saffrahn
14,935

Is the check engine light on after you start it? Vacuum leak, worn spark plug(s), bad idle air control and many other possibilities. Start by checking the manifold vacuum.

csz4296
75

yes check engine light is on it just came on the outher day

John Saffrahn
14,935

Go to a parts store and get the codes pulled.

Your Answer

Related Questions

Sierra 2500
Looking for a Used Sierra 2500 in your area?
CarGurus has 223 nationwide Sierra 2500 listings starting at $1,500.
ZIP:

Search GMC Sierra 2500 Questions

GMC Sierra 2500 Experts

#1 JOHNG123
JOHNG123
Reputation 60
#2 Chet Sawa
Chet Sawa
Reputation 30
#3 yetilikesbeer
yetilikesbeer
Reputation 20
View All

Related Models For Sale

Used GMC Sierra 1500"
694 Great Deals out of 60,925 listings starting at $2,195
Used Chevrolet Silverado 2500"
7 Great Deals out of 390 listings starting at $2,499
Used Dodge Ram Pickup 2500"
191 Great Deals out of 5,465 listings starting at $2,990
Used Ford F-250 Super Duty"
511 Great Deals out of 34,435 listings starting at $1,995
Used Chevrolet Silverado 1500"
1,658 Great Deals out of 167,324 listings starting at $950
Used Chevrolet C/K 2500"
3 Great Deals out of 360 listings starting at $3,995
Used Ford F-150"
1,833 Great Deals out of 176,014 listings starting at $999
Used Ford F-250"
5 Great Deals out of 796 listings starting at $1,995