Question about 1991 GMC Sonoma

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Coming noise transmission

A weird rattleing noise

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  • GMC Master
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Have you looked for loose bolts between flex plate and torque converter?This happens quite often as many shops don't use a torque wrench to install these bolts. Other loose sheet metal or starter?

Posted on Apr 17, 2014

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Posted on Jan 02, 2017

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sfparker
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SOURCE: ''I have a rattleing noise coming from rear differential''

sounds like the heat plate on exhaust convert

Posted on Sep 16, 2011

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'94 Gmc Sonoma 4.3L Starts loosing Power and making weird Rattle Noise when reaching operating temperature. Also water tank looks like there is a bit oil in it. Could it be the cylinder head gasket?


Oil in the coolant is usually an intake manifold gasket problem on these engines. If a head gasket failure the engine will normally overheat and give erratic temp guage readings. Make sure the oil level is full. Is the rattle noise coming from the engine? Some times the exhaust (converter) will fail and the catylist will seperate causing a rattle noise from the exhaust and plug it up giving a no power situation

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My 99 lexus gs400 is leaking a brown fluid. Not sure from where as It has had a transmission flush and radiator replaced. It also makes a weird rattling noise when started in the morning.


re rattle on start up,turn engine off then start again,repeat again if rattle continues.if oil change needed do it as my hydraulic lifters rattle in low temp or when oil old

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I have a weird rattling noise when I put my Audi


Have the code extracted it may have to do with your transmission and weird rattling noise you hear.

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I have a 2001 Ford ranger supercab that makes rattling noises. It has a 4.0L SOHC. It makes a very fast and loud metallic rattle wich softens anfter about a second or so when I first start it for the day....


4.0l's are notorious for valve rattle on cold start-up. There is really nothing you can do to make it go away short of completely replacing the valve train in the top end, and that isn't a permanent fix. It's is an top end oiling issue from the factory. Just don't race your engine on cold start-up until the rattle stops.

The rattle in the transmission sounds to me to be more of a loose dust shield/heat shield around the transmission or exhaust than a mechanical issue.

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1 Answer

''I have a rattleing noise coming from rear differential''


sounds like the heat plate on exhaust convert

Apr 10, 2009 | 1995 GMC Yukon

2 Answers

04 Endeavor rattling noise


I had the same problem! I crawled underneath the car and discovered that a heat shield on the exhaust header pipe was corroded and rattling against the exhaust pipe. (Before the muffler)
I removed the portion and clamps and solved the problem. Give it a try.

Jun 19, 2008 | 2004 Mitsubishi Endeavor

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