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08-31-2004, 06:20 PM
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#1 |
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Active Member
Join Date: Mar 2004
Location: Virginia
Posts: 169
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Need help diagnosing problem
I have a problem with my rear end... Nice intro huh?
Only when I am starting from a stop, with the wheel turned anything but straight, in other words, this only happens when I am pulling onto a road. Something in the rear is binding or whatever, and it clunks for the first few seconds of the acceleration, but it is pretty hefty because it feels like it is kicking the whole rear of the truck from side to side until it frees up. This doesn't happen if I am starting from a stop and going straight. It's a 71 K5 CST, no lift, SM465, 350 stock Any ideas?
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71 Blazer CST 72 K20 Capt USAF |
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08-31-2004, 07:13 PM
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#2 |
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SKINNY TIRES RULE!
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,038
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Do you have a posi rear? Have you checked the fluid level in the differential?
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bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L |
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08-31-2004, 09:47 PM
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#3 |
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Active Member
Join Date: Mar 2004
Location: Virginia
Posts: 169
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I have no idea if it is a posi. Is there a way to check without pulling the cover? I do need to check the fluid though. Could it be that simple and also be the reason for the noise??
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71 Blazer CST 72 K20 Capt USAF |
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08-31-2004, 11:21 PM
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#4 |
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Registered User
Join Date: Aug 2004
Location: Brea, CA.
Posts: 5
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if it is a possi you might need a possi additive. if it isn't your spider gears could be striped or broken. best bet is pull the cover and have a look. the longer you drive it the worst it will get.
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09-01-2004, 11:43 AM
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#5 |
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SKINNY TIRES RULE!
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,038
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I would pull the cover and take a look. Sounds like it could use a fluid change anyway. It might just be low on fluid or be gummed up. How long have you owned the rig?
I think there is a way to tell buy either the codes on the glove box or the tag on the diff cover if it is a posi (factory anyway). Aarons'72Blaz - welcome to the board. Take a minute to fill out your profile so we all know where you are I think
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bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L |
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09-01-2004, 04:00 PM
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#6 |
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Its lookin' like a Blazer!
Join Date: Aug 2003
Location: Gods Country, KY
Posts: 1,772
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Is it a clunky noise or a more precise ratcheting noise? It almost sounds like you might have a lockrite in the rear diff. Its a posi unit that fits inside the rear diff and replaces the spider gears. Your probably going to have to pull the cover. It never hurts to change the fluid anyway. You can pick up the gear oil and additive (if you have a factory posi) at any parts place. Advanced auto is the cheapest around here.
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09-01-2004, 07:19 PM
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#7 |
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Active Member
Join Date: Mar 2004
Location: Virginia
Posts: 169
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I haven't pulled the cover yet but I do now know that it came from the factory with a Posi unit. Does that help any? I would say the noise is most similar to a binding noise, kind of hard to explain, It appears to be coming from the left side more than the passenger side but that may just be because that's where I sit...
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71 Blazer CST 72 K20 Capt USAF |
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09-01-2004, 07:52 PM
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#8 |
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The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,468
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 LOOKS LIKE UR GONNA HAVE TO PULL THE COVER
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Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T |
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