Need 2003 Chevy Silverado 1500 ball joints, control arms, hubs, or a front-end kit? 2003 is GMT800 Silverado 1500 (1999–2006). GMT400 C1500/K1500 (through 1998) and 2007+ GMT900 are different front ends. This is not 2500, not Suburban, and not Express.
A clunk at low speed is usually a ball joint or sway link. Wander or inner-edge tire wear is more often a tie rod or a worn control-arm bushing. Most people replace the control arm as a complete unit with the ball joint already pressed in.
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Jump to: Shop notes · Works Kit · Front · Steering · Rear · Fitment notes
Leveling the rake? Compare ReadyLIFT, Rough Country, and Daystar 2″ kits for this GMT800 generation (trucks + Tahoe/Suburban/Yukon/Escalade/Avalanche): 1999–2006 GMT800 Silverado / Tahoe 2 Inch Leveling Kits.
GMT800 Silverado / Sierra 1500 (1999–2006) shop notes — 2003
2003 Chevy Silverado 1500 suspension — GMT800 shop focus
Model-year 2003 sits in the GMT800 Chevy Silverado 1500 window (1999–2006). It is not 2500/3500 HD.
Catalog applications for GMT800 (1999–2006) often repeat the same SKUs across adjacent years in this generation — that is expected. This URL stays year-specific for 2003 with a self-canonical and year-locked heading/links. On-page catalog SKUs called out here include MOOG front, MOOG K100116, MOOG ES3493T, MOOG EV370, MOOG K6541, MOOG K6539, MOOG K6327, MOOG CK620381 — use only these rows (and the lists below), not torque charts we do not publish. Cross-shop the same model year: 2003 Chevy Silverado 1500 brake parts · 2003 Chevy Silverado 1500 shock parts.
These are shop notes for the GMT800 Silverado / Sierra 1500 (1999–2006) that includes 2003. Do not mix 2007+ GMT900 numbers.
What usually brings people here
- Low-speed clunk over bumps or driveways → ball joint or sway link (K100116). Most shops prefer replacing the control arm as a complete unit with the joint already pressed in.
- Wander, loose steering feel, or inner-edge tire wear → outer/inner tie rod (ES3493T / EV370) or a worn control-arm bushing.
- Growl or rumble that rises with road speed → wheel hub/bearing (515058).
Key SKU choices
Upper ball joint on this page: K100116. Match the arm style (forged vs stamped / aluminum vs iron) before you order — the wrong upper is a common return.
Outer/inner tie rods on this page: ES3493T / EV370. Replace as a pair when play is present; an alignment is required after tie-rod work.
Fitment forks on this page
- Lower, AWD, 4.150″ Length: K6541
- Lower, 4×4, 4.150″ Length: K6541
- Upper, +/- 3 Degrees Camber/Caster, Adjustable: K100116
- Lower, 4×2: K6539
- Lower, Pickup 2 Dr., 4×2: K6327
- Lower, 4×4: left CK620381, right CK620380
While you’re in there
While you’re tearing into the front end, inspect the matching side and the sway-bar links — one-sided wear is common after a hit or a long alignment delay. Confirm the hub (515058) if you have a growl that rises with road speed.
Shop notes only — not a service manual. Use the factory procedure or a Haynes/Chilton manual for wrench work, torque, and safety steps. Leave a comment with drivetrain, suspension type, and the symptom if you want a part-number check.
Works Kit — 2003 Chevy Silverado 1500 front-end (GMT800 · not GMT900 2007+ · confirm 4×4 vs 4×2 hub)
Numbers already linked for 2003 — page clunk row K100116; steering side wander SKUs ES3493T + EV370; hub 515058. Model-year 2003 is the only year this kit is written for — neighboring years may share numbers but not this page’s hub/arm forks. order it all once, do it right. Also note: hub forks also list 515036, 515054.
1. Clunk / sway kit
- Ball joint / clunk path named on this page — K100116
2. Wander / steering kit
- Outer / tie-rod end (page list) — ES3493T
- Inner / drag-link companion on this page — EV370
- Alignment after install
3. Hub growl add-on
Search Amazon for a 2003 Chevy Silverado 1500 front-end kit · Full lists are below.
2003 Chevy Silverado 1500 front suspension
Ball joints
- Lower, AWD, 4.150″ Length: K6541
- Lower, 4×4, 4.150″ Length: K6541
- Upper: K6540
- Upper, +/- 3 Degrees Camber/Caster, Adjustable: K100116
- Lower, 4×2: K6539
Control arm bushings
- Upper, standard: K6688
Control arm bushing sets
- Lower, Pickup 2 Dr., 4×2: K6327
Control arms with ball joint
- Lower, 4×4: left CK620381, right CK620380
- Lower, 4×4: left RK620381, right RK620380
- Lower, AWD: left CK620381, right CK620380
- Lower, AWD: left RK620381, right RK620380
- Upper, Offset Bushings Allow 2 Added Degrees Of Camber: CK80826 or RK80826
- Upper, Standard Bushing: CK80942 or RK80942
- Upper, +/- 3 Degrees Camber/Caster, Adjustable: RK621782
- Lower, 4×2: left RK620265, right RK620264
Shock mount bushings
Strut spring seats
- Upper, 4×2, 161mm Outside Diameter: K160021
Sway bar bushings
- To frame, AWD: K201174
- To frame, AWD, standard: K6408
- To frame, 4×4: K201174
- To frame, 4×4, standard: K6408
- To frame, 4×2, 1-5/16″ Sway Bar Diameter: K201177
- To frame, 4×2, 1-5/16″ Sway Bar Diameter, standard: K6439
Sway bar repair kits
Torsion bar keys (adjustable)
- 6 Stud Hub, Minus 1/2 To Plus 1-1/2 Degree, (Allows Front Ride Height Changes Up To 3″ Above: K100011
Wheel hubs & bearing assemblies
- 4×4, 8 Stud Hub: 515058
- 4×4, 6 Stud Hub: 515036
- AWD, 8 Stud Hub: 515058
- AWD, 6 Stud Hub: 515036
- 4×2, 6 Stud Hub: 515054
2003 Chevy Silverado 1500 steering
Center links
Idler arms
- Without Bracket, Heavy Duty Dual Tapered, High Strength Durable Stud K6534HD ‡ 1 S002 Without Bracket: K6534
Idler arm bracket assemblies
- 4×4, (Bracket Pivot Assembly, Includes Powdered-Metal Gusher Bearing To Allow: K6723
- AWD, (Bracket Pivot Assembly, Includes Powdered-Metal Gusher Bearing To Allow Grease: K6723
Idler arm grease hose kits
- Allows Easy Access To Idler Arm Grease Fitting: K6714
Pitman arms
- 3 Groove Spline, Heavy Duty Dual Tapered, High Strength Durable Stud K6654HD ‡ 1 S002 3 Groove Spline: K6654
- 4 Groove Spline, Heavy Duty Dual Tapered, High Strength Durable Stud K6536HD ‡ 1 S002 4 Groove Spline: K6536
Rack & pinion boot kits
- 4×2: K150270
Steering rack insulator bushings
- 4×2: K100187
Tie rod ends
- Outer, Conventional Power Steering: ES3493T
- Inner, Conventional Power Steering, Design Of Enhanced Belleville Washer Optimizes Load And Provides Longer Fatigue Life: ES3488
- Outer, Rack & Pinion Power: ES3492T
- Inner, Rack & Pinion Power: EV370
2003 Chevy Silverado 1500 rear suspension
Leaf spring shackles
Leaf spring shackle brackets
- Rear: K150381
Tie rod ends
Fitment notes
These Moog numbers come from the 1991–2006 catalog rows that include 2003. Confirm 4×2 vs 4×4, aluminum vs steel, and trim before you order.
Diagrams are on the Silverado 1500 catalog page. Related: Silverado kit page. How to diagnose suspension noises.
Related: 2003 Chevy Silverado 1500 shock parts.
Leave a comment with 4×2 vs 4×4 and the noise if you want a part-number check. #HAPPYMOTORING
Need pads and rotors? See 2003 Chevy Silverado 1500 brake parts.