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#1
08-11-2012, 01:01 PM
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Tapping/Knocking Noise
Have a 2000 GMC Jimmy-have had nothing but problems since I purchased it (which was only a year ago) First A/C went out, then battery, then fuel pump, followed closely by the alternator. Now a week later it's making a tapping/knocking sound (comes/goes) but something is defintely wrong. Seemed to get a better for a minute once added more oil..........
If anyone has any ideas-please share. I've about had it with this truck.  Thank You 
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#2
08-11-2012, 02:28 PM
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Re: Tapping/Knocking Noise
Seemed to get a better for a minute once added more oil
What is the oil level now? Have you checked it?If it was run for a while low on oil, there may be some serious damage internally.
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#3
08-11-2012, 02:56 PM
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Re: Tapping/Knocking Noise
It was less than a quart low-filled it and still on/off noises--
this has been for about 3 days now-checked it everyday; hasn't gone down any further...... also sometimes the noise will go away after I drive it for awhile  Thank You for taking the time to respond to me 
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#4
08-11-2012, 03:37 PM
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Re: Tapping/Knocking Noise
May have a lifter sticking then. If thats the case, not much you can do other than have them replaced. If it's a knocking (deep sounding) noise from the bottom of the eng, then most likley a main bearing. But, since you said it comes and goes, I'm thinking a lifter.
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| engine , knock , noise , oil , tapping |
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