On the K2XX Silverado 1500 the front hub is a sealed bolt-in unit with the ABS sensor built in, so there is no press work and no bearing race to drive out. The whole job is brakes off, axle nut off, three bolts out from behind the knuckle, and pull. Where it goes wrong is corrosion: the hub flange bonds into the knuckle bore, and the three bolts back out hard after a few winters. Penetrating oil the night before and a proper bolt-on hub puller turn a two-hour job into a one-hour job.
The mistake people make most is skipping the cleanup. If you leave rust scale in the knuckle bore or grease on the flat mounting face, the new hub sits cocked, you get runout, a brake pulsation, and a fresh bearing that hums again in 20,000 miles. Second most common: reusing the old axle nut. Buy a new one. Also check the other side before you put the wheel on - K2XX front bearings tend to go in pairs.
| Item | Type | |
|---|---|---|
| Floor jack 2-ton minimum Lift the front of the truck at the frame or lower control arm. | Required | shop |
| Jack stands 3-ton pair Support the frame while the wheel is off. | Safety | shop |
| Wheel chocks Block the rear wheels before lifting. | Safety | shop |
| Lug nut socket 22 mm 6-point, 1/2 in drive (deep, thin-wall for alloys) Remove the wheel; K2XX 1500 uses 22 mm lug nuts. | Required | shop |
| Breaker bar 1/2 in drive, 24 in Crack the axle nut, lug nuts and hub bolts loose. | Required | shop |
| Penetrating oil Soak the hub bolts and hub-to-knuckle seam the day before. | Consumables | shop |
| Socket set 3/8 and 1/2 in drive, 10-22 mm 6-point General fasteners, ABS harness bracket, splash shield. | Required | shop |
| Caliper bolt socket 18 mm socket for caliper guide-pin bolts (verify; some trims use E-Torx) Remove the brake caliper from its bracket. | Required | shop |
| Caliper bracket socket 21 mm 6-point, 1/2 in drive Remove the two caliper mounting bracket bolts from the knuckle. | Required | shop |
| Bungee cord or wire Hang the caliper so the brake hose is not stretched. | Required | shop |
| Axle nut socket 36 mm 6-point, 1/2 in drive Remove the front CV axle nut at the hub center. | Required | shop |
| Impact wrench 1/2 in drive, cordless or air Makes the axle nut and rusted hub bolts far easier. | Recommended | shop |
| Hub bolt socket 21 mm 6-point, 1/2 in drive (verify 18 mm on some builds) Remove the three hub/bearing mounting bolts from behind the knuckle. | Required | shop |
| Swivel and extensions 1/2 in drive, 6 and 10 in plus wobble/universal joint Reach the rear hub bolts past the CV axle and frame. | Required | shop |
| Hub puller / slide hammer Front hub puller with 5-lug flange adapter or bolt-on slide hammer Pull a corroded hub out of the knuckle bore without damaging it. | Required | shop |
| Dead blow or brass hammer 2-3 lb Tap the hub free and seat the new one without deforming metal. | Recommended | shop |
| Pry bar 12-18 in Push the CV axle stub back out of the hub splines. | Recommended | shop |
| Wire brush and scraper Clean rust out of the knuckle bore so the new hub seats flat. | Required | shop |
| Brake cleaner 2 cans Clean the knuckle, rotor and hub flange of grease and rust dust. | Consumables | shop |
| Anti-seize compound Nickel or aluminum based Thin film on the knuckle bore and hub flange OD only, not on bolt threads or the flange face. | Consumables | shop |
| Torque wrench 1/2 in drive, 25-250 ft-lb Hub bolts, caliper bracket bolts, axle nut and lug nuts are all high torque. | Required | shop |
| Torque wrench (small) 3/8 in drive, 10-80 ft-lb Caliper guide-pin bolts. | Recommended | shop |
| Front hub / bearing assembly K2XX 1500 front hub with integral ABS sensor; 6-lug on some HD-package trims, 6-lug standard on 1500 (verify lug count and 2WD vs 4WD) The replacement unit; ABS sensor is built in. | Parts | shop |
| New axle nut M24 front axle nut (single use recommended) The staked/prevailing-torque nut should not be reused. | Parts | shop |
| Nitrile gloves and safety glasses Rust, brake dust and penetrating oil spray. | Safety | shop |
Engine choice (4.3 LV3, 5.3 L83, 6.2 L86) does not change any fastener on this job. What varies is drivetrain and wheel package: 2WD trucks have no CV axle, so there is no 36 mm axle nut and the hub comes straight out once the three bolts are removed. Trucks with the 6-lug HD/Max Trailering package use a heavier hub and may have different rotor and caliper hardware, so verify lug count and 2WD/4WD when ordering the hub.
| Front hub/bearing mounting bolts (3) | 133 ft-lb (180 Nm) - verify in the service manual |
| Front CV axle nut | 177 ft-lb (240 Nm) - verify in the service manual |
| Caliper mounting bracket bolts | 129 ft-lb (175 Nm) - verify in the service manual |
| Caliper guide-pin bolts | 31 ft-lb (42 Nm) - verify in the service manual |
| Wheel lug nuts | 140 ft-lb (190 Nm) |
Lug nut (22 mm), axle nut (36 mm) and caliper bracket (21 mm) sizes are consistent across 2014-2018 Silverado 1500; hub bolt heads are 21 mm on most builds but check yours with a socket before buying tools, and confirm torque values against a GM service manual or AllData for your exact VIN.
The three hub mounting bolts behind the knuckle take a 21 mm 6-point socket on most builds, with a wobble extension to clear the CV axle. A few trucks have been reported with 18 mm heads, so put a socket on one before you start.
Many come out with a few hits from a brass or dead-blow hammer on the hub flange, but a rust-welded hub needs a bolt-on puller or slide hammer that threads onto the wheel studs. Prying against the aluminum knuckle to free it is how people crack knuckles.
Usually yes, because the wheel speed sensor is inside the hub. The code is stored though, so if the light stays on after a drive cycle you need a scan tool to clear the ABS module code.
GM specifies roughly 177 ft-lb (240 Nm) for the front axle nut, but verify it in the service manual for your VIN. Use a new nut and hold the hub with a strap wrench or the brake applied while torquing.