Choose your trim in My Garage to confirm exact fit.
Exact-fit parts for the 1999 GMC Sierra 1500 SLT.

Belltech
Part # 5402
$335.87

Progress LT
Part # 21.0460.060
$365.44

Ridetech
Part # 30514100
$2961.27

Unity Automotive
Part # 4-213180-256020-001
$58.05

Camburg
Part # CAM-210010
$127.95

Yukon Gear & Axle
Part # YSPXPGM9.5
$37.89

Hellwig
Part # 986
$194.04

Timbren
Part # GMFK15A
$269.36

Fabtech
Part # FTS8002
$95.43

QA1
Part # 52869
$515.23

SPC Performance
Part # 86375
$35.88

Yukon Gear & Axle
Part # YSPCS-016
$9.89

Superpro
Part # SPF5583K
$119.99

Superpro
Part # KIT248K
$699.99

Unity Automotive
Part # 2-256010-001
$29.74

Rancho
Part # RS8628
$7.08

Ridetech
Part # 11387199
$3011.47

SPC Performance
Part # 86350
$90.29

QA1
Part # 52626
$596.58

SPC Performance
Part # 86325
$22.57
This page groups parts listed for the 1999 GMC Sierra 1500 SLT. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.
We offer a wide selection of suspension & steering parts for the 1999 GMC Sierra 1500 SLT. This page narrows the catalog to the year, make, and model; use your trim on product pages to confirm exact fit when a part only fits certain submodels.
We carry parts from trusted brands including Moog, Belltech, Maxtrac, Energy Suspension, and Hellwig, plus many more. Filter by brand to find your preferred manufacturer.
Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.
Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.