Thread: 92 gmc 3500 4l80e 7.4l tbi
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Old 03-06-2018, 03:42 AM   #2
Terrick down Under
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Join Date: May 2013
Location: Royalla, NSW, Australia
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Re: 92 gmc 3500 4l80e 7.4l tbi
Check the fluid is not too full.
Mine has a piece of rubber tube about 18" long that goes up next to the distributor.
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