Clattering on acceleration

Asked by Mar 29, 2016 at 07:43 AM about the 1988 GMC Sierra 1500 K1500 Standard Cab LB 4WD

Question type: Maintenance & Repair

When accelerating, there's a fluttering noise,
similar to what a diesel sounds like. Lifters, bearing  
pack?  No good ideas

6 Answers

113,885

How about a thrown rod in the engine.

113,885

If it a pre ignition sound, try disconnecting the spout connector and see if it goes away or is a lot less, if that proves out then check the base timing, it maybe advanced too far, if the timing is right on then I suspect that the ECM is over advancing the spark while running and will have to be replaced. HTH

Truck runs good, no constant chattering, only on acceleration, and not consistently. Very mild diesel-powered noise

Diesel sounding noise

113,885

Bit it, then still do the time no hung and you should also check the EGR valve it may not be working.

Will do. Thnx

Your Answer

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 58,939 nationwide Sierra 1500 listings starting at $1,995.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,590
  • #2
    John Saffrahn
    Reputation
    3,870
  • #3
    Glenn Clingenpeel
    Reputation
    3,690
View All

Related Models For Sale

Used Ford F-150
2,334 Great Deals out of 215,121 listings starting at $1,300
Used Chevrolet Camaro
241 Great Deals out of 28,842 listings starting at $1,800
Used Chevrolet Corvette
100 Great Deals out of 15,289 listings starting at $3,900

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
16 Great Deals out of 32,079 listings starting at $23,873
2017 GMC Sierra 1500 For Sale
78 Great Deals out of 5,429 listings starting at $19,673
2016 GMC Sierra 1500 For Sale
68 Great Deals out of 2,810 listings starting at $16,422
2015 GMC Sierra 1500 For Sale
86 Great Deals out of 4,673 listings starting at $13,995
2014 GMC Sierra 1500 For Sale
85 Great Deals out of 3,070 listings starting at $13,897

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.