Rough Idle at lights and stop signs

Asked by debihop59 Feb 06, 2017 at 07:59 PM about the 2000 GMC Sierra 1500 SLE 4WD Extended Cab SB

Question type: Maintenance & Repair

I replaced my 2000 GMC Sierra 1500 (V8) TPS sensor because of rough idle, did not solve the problem, so I replaced  the Idle Air Control Valve, and that didn't fix it either.  I have tried resetting the ECM and it runs fine for a few minutes, but then it's back to running rough again at low idle.  I also thoroughly cleaned the throttle body.  Any tips or suggestions on how to get it to keep and accept the reset?

2 Answers
223,915

Rowefast answered 7 years ago

Clean or replace the Mass Air Flow Sensor. There is a special cleaner to use for cleaning this.

1 people found this helpful.
Mark helpful
40

Rybcklw420 answered 6 years ago

Just fixed my 17, all I did was spray throttle body cleaner into the throttle body after cleaning very well and the low idle came right back up after a few high revs to w.o.t. ( wide open throttle) and is running like new again so I will do this every LOF , and jus cleaning the throttle body is not enough, you need to spray it to clean the sensors and upper plenum.

4 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Rough Idle at lights and stop signs 2 Answers

    I replaced my 2000 GMC Sierra 1500 (V8) TPS sensor because of rough idle, did not solve the problem, so I replaced the Idle Air Control Valve, and that didn't fix it either. I have tried resetting t...

    2000 GMC Sierra 1500 SLE 4WD Extended Cab SB

    -

    Maintenance & Repair

  • Rough idle 12 Answers

    Rough idle won't stay running have change elec.spark control, idle air control,plugs,map sensor,tps, and the ecm.. Still running rough but if you unscrew the IAC it idles high but the miss smooths...

    1991 GMC Sierra 1500 C1500 SLE Extended Cab LB

    -

    Maintenance & Repair

  • Rough idle and bubbling noise under cab 2 Answers

    I have a 91 GMC Sierra 1500 5.0 . It idles rough at low speed sometimes stalling . Runs fine at a higher speed . There's also a bubbling noise under the cab like it's coming from the muffler...

    1991 GMC Sierra 1500 C1500 SLE Extended Cab LB

    -

    Maintenance & Repair

  • Rough idle 1 Answer

    Idle is very rough. If you blow it out carbon pours out of the exhaust. But it starts idling rough again.

    2005 GMC Sierra 1500

    -

    Maintenance & Repair

  • Rough Idle/No start 5 Answers

    Okay guys, so my truck has been sitting since May of this year, and it broke down while I was driving about 200 miles from home. So obviously, it was running well and I didn't think there were any ...

    1996 GMC Sierra 1500 C1500 SL Standard Cab LB

    -

    Maintenance & Repair

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,840
  • #2
    dragonflyoffshore
    Reputation
    11,750
  • #3
    John Saffrahn
    Reputation
    11,690
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
202 Great Deals out of 5,975 listings starting at $2,975
Used Ford F-150
321 Great Deals out of 14,968 listings starting at $1,712
Used GMC Sierra 2500HD
17 Great Deals out of 1,640 listings starting at $9,988
Used Toyota Tundra
35 Great Deals out of 1,184 listings starting at $8,500
Used Chevrolet Silverado 2500HD
16 Great Deals out of 1,285 listings starting at $8,995
Used GMC Yukon
16 Great Deals out of 929 listings starting at $1,225
Used Toyota Tacoma
55 Great Deals out of 1,071 listings starting at $8,708
Used Dodge RAM 1500
3 Great Deals out of 71 listings starting at $4,000
Used Chevrolet Tahoe
24 Great Deals out of 911 listings starting at $11,900
Used Ford F-250 Super Duty
24 Great Deals out of 1,204 listings starting at $7,995
Used Chevrolet Corvette
29 Great Deals out of 1,060 listings starting at $15,871

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.