My truck is sputtering, staling, and bucking

Asked by Nov 25, 2014 at 06:29 PM about the 1989 GMC Sierra 1500 K1500 Extended Cab LB 4WD

Question type: Maintenance & Repair

89 has 160,000 miles.Its allways run great but a couple days ago it started overheating.
We put a new thermostat in and temp is better. It idle's fine but stalls, sputters and
bucks. Any ideas?
Thanks

1 Answer

I also put some bars leak in the radiator after we changed the thermostat, but didn't let it run or idle for long enough...

Your Answer

Add photo

Related Questions

  • 1996 c1500 4.3 liter with manual bucks and jerks at low rmps 1 answer

    Have 96 c1500 4.3 liter and when it's idling you can smell gas commimg out exhaust and truck acts like it's missing but when you rev it up or put load on motor and it disappears and somtimes it do...

    1996 GMC Sierra 1500 C1500 SL Extended Cab SB

    -

    Maintenance & Repair

  • sometimes starts with low idle sometimes starts correctly. 7 answers

    2002 GMC sierra. sometimes when I start the truck it will idle about 500, then it will run rough or stall. If I turn it off, I have to turn the key off completely, and restart it will idle at 1000 an...

    2002 GMC Sierra 1500 SLE Standard Cab SB

    -

    Maintenance & Repair

  • Problem with ground wire from fuel pump connection to truck frame 18 answers

    I changed the fuel pump on my 1996 GMC Sierra earlier in the year. I cut through my truck bed right above the fuel pump so I would have easier access to it. For the most part my truck has been fine b...

    1996 GMC Sierra 1500

    -

    Maintenance & Repair

  • rough idle, stalling, loss of power. 228 answers

    o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It will run normal on occasion but only lasts about 45 seconds or so. I don't think its the torqu...

    1995 GMC Sierra 1500 K1500 SL 4WD Extended Cab Stepside SB

    -

    Maintenance & Repair

  • 2014 GMC Sierra 1,000 miles on it. Bucking 1 answer

    My husbands new truck keeps bucking. We were driving down the highway and it jerked back a little and we thought we ran over something. It seems like when it changes gears its bucking. It's warra...

    2014 GMC Sierra 1500 Base LB 4WD

    -

    General

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 5,010
#2 John Saffrahn
John Saffrahn
Reputation 3,540
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 3,150
View All

Related Models For Sale

Used Ford F-150
2,191 Great Deals out of 206,316 listings starting at $1,499
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
43 Great Deals out of 44,111 listings starting at $20,121
2016 GMC Sierra 1500 For Sale
78 Great Deals out of 3,645 listings starting at $17,888
2015 GMC Sierra 1500 For Sale
102 Great Deals out of 3,926 listings starting at $15,400
2014 GMC Sierra 1500 For Sale
118 Great Deals out of 4,152 listings starting at $14,495
2013 GMC Sierra 1500 For Sale
66 Great Deals out of 2,009 listings starting at $9,600

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.