lifted 77 k20

[rewardedgamer]

ok so i have 6 inch suspension lift and when my truck climbs a curve or something small like that it creaks but when i drive fast it doesn't. so i was wondering whats wrong with it to make it creak

[bake74]

     What you describe could be one thing or a combination of things.  Your very first diagnostic step should be to thoroughly inspect all your suspension parts.
     That means, check your spring packs for any cracks or breaks.  Check your spring clamp and eye bolts for looseness.  Check your u-bolts, spring hangers and bolts for looseness. 
     Then move on to your sway bars, if equipped, all your front suspension parts including your steering box for looseness or cracks around the frame.  Then you should check out anything that is effected when the frame flexes, like exhaust and such.
     Since you said it "creaks" when you flex your suspension/frame, I would concentrate on those area's first.
     Sorry about the long check list, but without seeing/hearing it for ourselves, we can only guess and give you idea's. 
     It would be a tremendous help on your part if you could isolate the area with the help of someone or someone's to a specific area of the truck and then concentrate your efforts in that area first.
     Good luck and report back if you found out what it was or not.

[rewardedgamer]

     What you describe could be one thing or a combination of things.  Your very first diagnostic step should be to thoroughly inspect all your suspension parts.
     That means, check your spring packs for any cracks or breaks.  Check your spring clamp and eye bolts for looseness.  Check your u-bolts, spring hangers and bolts for looseness. 
     Then move on to your sway bars, if equipped, all your front suspension parts including your steering box for looseness or cracks around the frame.  Then you should check out anything that is effected when the frame flexes, like exhaust and such.
     Since you said it "creaks" when you flex your suspension/frame, I would concentrate on those area's first.
     Sorry about the long check list, but without seeing/hearing it for ourselves, we can only guess and give you idea's. 
     It would be a tremendous help on your part if you could isolate the area with the help of someone or someone's to a specific area of the truck and then concentrate your efforts in that area first.
     Good luck and report back if you found out what it was or not.

i didnt see any broken leafs also could it be my 3 inch body lift?

[bake74]

i didnt see any broken leafs also could it be my 3 inch body lift?

     You did not mention at first you had a body lift.  Check your body lift pucks for looseness first, and at the same time make sure they haven't twisted or cracked or anything that would allow unwanted movement.
     I still think your best bet to cut down on inspection time is to isolate the corner or area of the truck that is making the creaking sound.

[rewardedgamer]

i didnt see any broken leafs also could it be my 3 inch body lift?

     You did not mention at first you had a body lift.  Check your body lift pucks for looseness first, and at the same time make sure they haven't twisted or cracked or anything that would allow unwanted movement.
     I still think your best bet to cut down on inspection time is to isolate the corner or area of the truck that is making the creaking sound.

well it makes the noise when the front or back suspension isn't level (like 1 wheel climbs up the curve before the other)

[Irish_Alley]

check your crossmembers also

[bd]

check your crossmembers also

X2

Crossmembers on light trucks are known to snap, crackle & pop.  Creaks occur because of frame flex that stresses the crossmember attachments at the frame rails.  Often a good tightening of all the bolts is sufficient.  Sometimes, enlarging the bolt holes to the next bolt diameter and substituting Grade 8, flanged, frame bolts and nuts is necessary.  Either way, bolts must be tight!  The worst crossmembers for creaks are the forward and mid-frame members.  You should also inspect for cracks radiating from the bolt holes, or sub-concentric cracks centering around the bolt holes.  Check your steering gear-to-frame mounting holes and shock absorbers-to-frame mounting holes for cracks, as well.

[rewardedgamer]

check your crossmembers also

X2

Crossmembers on light trucks are known to snap, crackle & pop.  Creaks occur because of frame flex that stresses the crossmember attachments at the frame rails.  Often a good tightening of all the bolts is sufficient.  Sometimes, enlarging the bolt holes to the next bolt diameter and substituting Grade 8, flanged, frame bolts and nuts is necessary.  Either way, bolts must be tight!  The worst crossmembers for creaks are the forward and mid-frame members.  You should also inspect for cracks radiating from the bolt holes, or sub-concentric cracks centering around the bolt holes.  Check your steering gear-to-frame mounting holes and shock absorbers-to-frame mounting holes for cracks, as well.

ok i dont know where most this stuff is so i guess il live with the creaking sound

[bd]

ok i dont know where most this stuff is so i guess il live with the creaking sound

The frame is the steel skeleton that supports the cab and body above it, the engine and transmission between it, and rests on the springs supported by the front and rear axles.  The frame consists of two steel channels (or rails) that run the length of the vehicle from front to back.  The frame rails are joined together by steel crossmembers that are riveted or bolted between the frame rails at 90°.  There are crossmembers ahead of and under the engine, behind and below the transmission/transfer case, below the bed, above the rear axle, and at the very back of the vehicle.  The crossmember behind the transfer case bolts in between the frame rails, so the transmission/transfer case can be removed for service.  All the other crossmembers are riveted in place.

The steering gear bolts to the outside of the driver side frame rail, ahead of the left front wheel and tire.  The frame has a tendency to crack at the steering gear mounting.  Take some time to check it.

[Irish_Alley]

when you roll up on a curb your frame will flex. the crossmebers keep everything lines up while allowing some flex. some will remove a crossmember to allow even more flex for rock crawling. but like bd said if and are loose or cracked it will make some noise. this isnt saying this has to be your problem could be bushings also but its another place to stat looking.