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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: kodalee on March 19, 2014, 05:37:39 pm
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I have a 85 k10. I didnt hear anything until i put a lift on the truck. It is making a knocking only when i 4x4. you can only hear it when sitting in the cab. cant hear it from outside the truck. there is only maybe 1/2 inch between the front drive shaft and the transfer case skid plate. i can only hear it every once in awhile sometimes its wore then others.
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Check your front drive shaft for starters. Make sure all the u-joints are good and also the splines on the slip joint.
How much lift did you put on the truck? You may need a longer drive shaft. In either case you have changed the angle that the shaft is accustomed to and it may be showing it's age.
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driveshaft was just rebuilt not a month ago. every piece is brand new. i installed a 4 inch lift with 33 inch tires
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my 84 does this, i havnt really looked at it but it almost sound like the t-case is hitting the floor. could be a bad motor or transmission mount
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Check your front drive shaft for starters. Make sure all the u-joints are good and also the splines on the slip joint.
How much lift did you put on the truck? You may need a longer drive shaft. In either case you have changed the angle that the shaft is accustomed to and it may be showing it's age.
my 84 does this, i havnt really looked at it but it almost sound like the t-case is hitting the floor. could be a bad motor or transmission mount
I would look at both of these closely. Also does it make the noise all the time in 4x4, or like when you are flexing the suspension ? The more detail you can give us the better the answer's will be.
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mine is when you hit a bump. in 4wd, dont think it does it when you get on it (didnt do it at the truck pull)