Front end noise on gmc sierra 1/2 ton pickup 4 wheel drive.
Truck seems to have a noise in the left front end only while turning, breaking, and driving over normal road bumps. If driving on smoth surfaces no noise is apparent. No rough service on this vehicle, no hauling or plowing just normal driving and towing of Camper, never hit a curb or had an accident. Is this the norm for this vehicle. Searched the web for similar problems. no history. I will be rotating tire soon. Will check upper and lower ball joint, stabilizers and shocks. Any suggestions? Another owner of the same model year had an issue with the steering box on his truck. This like my issue could be related or just an isolated incident. Where do suggest I go to find similar such issues with 2005 GMC 1/2 ton pickup? I've been a truck owner for years and never had an front end issue on a vechicle with such low mileage. Of course anything is possible with the way GMC designs new trucks.
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check front axle shafts cv joints one might be bad. also if you turn on a dry surface when 4x4 engaged it will bind and make noise. Jack front of truck up and try to wiggle wheel up,down all around as you may also have a bad wheel hub bearing that is clunking when turning.
You probably have blown drive hubs. Do you have to engage the hubs at the wheels? If not and they are automatic locking and they are probably blown or seized into the unlock position. They are not too expensive to replace with manual locking hubs (My Suggestion) but the autolocking hubs are expensive. When you take the caps off the front drive spindles and try running it again you may see the axle turning inside but not the wheel. That is the best test. Wish you luck!!
You have to remove the wheel and the brake caliper. If it has antilock brakes disconnect the antilock break sensor wire up by the frame and get the wire free form the holders. Remove the big nut on the end of the axel shaft with a 1-3/8 inch socket, now turn the steering all the way to the left and losen the two bolts behind the hub with good 18MM socket. They are usually very tight be carefull not to round the head of the bolts use a good quality 6 point socket. Turn the bolts out about 6-8 turns and stop now turn the steering all the way to right do the same with the other two bolts. Now, take a air hammer with a punch end in it and hammer on the heads of the bolts, a little at time, on all the bolts, evenly until the hub is loose. If you don't have a air hammer a hammer and punch or drift will work. Then remove the bolts the rest of the way and pull the assembly off. Now you have to drive the wheel studs out and remove the rotor. I just described it on 3/4 ton a 1/2 ton might be easier but the principle is the same, I think there are only 3 bolts holding the hub on and the bolt sizes may differ. Also I think you can pull the rotor right off once caliper is out of the way. Sorry about that.
is your clutch pedal spongy if it is a hydraulic clutch there will be a small resivoir on the fire wall next to the brake master cylinder,if so check the fluid level,the noise your describing sounds like drive shaft u-joints,or cv axle drive shafts in front if its 4 wheel drive,block the wheels and put the truck in neutral,to release any tension on the drive shaft,go underneath,grab the driveshaft a foot behind the transmission,and push up an pull down on it while observing the u-joint in front of it if there is any looseness or play it is damaged,any movement up and down or left and right requires replacement,do the same to the other end at the rear axle,the rear axle u-joint is the most common failure,but check them both,
the connections near the front axle that activate the motor to engage the system aren't melted? That's a comon problem for that body style. If there good, sounds like it could be that motor itself. To figure out if it's you motor or transfercase, jack up the rear end, have a friend inside shift into 4 wheel drive, or try to, and put it in gear and apply some gas. If the front driveshaft is turning then it's something with the front end. If not, farther back in the system.