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05-31-2011, 10:49 AM
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#1 |
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Registered User
Join Date: Mar 2011
Location: El Paso, Tx
Posts: 18
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Rattling Noise
Hey guys, i have an 85 C1500 5.0 automatic
the other day i noticed a rattling while the truck is in park and in nuetral. but seems to lessen in noise while in drive and reverse. what could this be I'm thinking its the throw out bearing but everything ive read on those has only been for manual transmissions. any help would suffice, might need to look on getting a rebuild.? |
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06-08-2011, 03:54 PM
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#2 |
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Has more rust than truck...
Join Date: Apr 2005
Location: Ivanhoe, MN
Posts: 2,421
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Re: Rattling Nois
Anyone?
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06-08-2011, 04:02 PM
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#3 |
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GM Parts Guy
Join Date: Jan 2011
Location: Attleboro MA
Posts: 375
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Re: Rattling Nois
I would check to see if everything under the hood is tight. throwout bearings are only in M/T so that rules that out. Check brake lines and trans cooler lines as well.
__________________
1975 Chevrolet C-10 Custom Deluxe (DD/WIP) 1989 Chevrolet C1500 reg cab stepside (Winter Truck) 1977 Harley Davidson XLH 1000 (Summer Cruiser) |
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06-08-2011, 04:10 PM
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#4 |
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Chevys Kick A$$
Join Date: Jan 2005
Location: Zootown, MT
Posts: 12,699
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Re: Rattling Nois
Just wandering maybe loose torque converter and its putting pressure on when in gear and making the sound go away. Have you checked your exhaust to make sure everything's tight down there?
__________________
*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold  -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit   -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER  I would rather push a Chevy then drive a ford!!
 Last edited by Hoods69BadBowTie; 06-08-2011 at 04:10 PM. |
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06-08-2011, 07:28 PM
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#5 |
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Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Re: Rattling Nois
Check your flexplate for cracks, and make sure it isn't bent. You don't have a throwout bearing if you have an automatic.
Slonaker |
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06-09-2011, 10:55 AM
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#6 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: Rattling Noise
check the flywheel,bell housing bolts,and the cat cover(piece of aluminum under pass side over cat
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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06-09-2011, 04:02 PM
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#7 |
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Registered User
Join Date: Mar 2011
Location: El Paso, Tx
Posts: 18
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Re: Rattling Noise
think we found the problem. the flexplate bolts were loose, and almost stripped of thread. went down to the local store and got some grade 8 bolts, lock washers, regular ones( washsers are grade 8 ) and lock tight. gonna put them in today and drive it for awhile see if that hepls the situation.
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06-09-2011, 10:35 PM
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#8 |
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Chevys Kick A$$
Join Date: Jan 2005
Location: Zootown, MT
Posts: 12,699
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Re: Rattling Noise
Sweet sounds like it was an easy fix hopefully hope that works. Let us know if that fixes it or not!
__________________
*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!
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