Need 2020 GMC Sierra 1500 shocks or struts? 2020 is T1XX Sierra 1500. There is no Classic / LD twin this year. An AT4 still uses the shorter-lift 5100 set up front, not the stock-height 4600 pair. This is not 2500/3500 HD.
A nose that dives, or a shock body that is wet, is the front strut. A float on the highway or a squat when you tow is the rear shock. Replace a corner as an axle pair. Clunks that are not the damper belong on the suspension page for this year.
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Other Sierra years: 2019 · 2020 · 2021 · 2022 · 2023 · 2024
Jump to: Shop notes · Front · Rear · Fitment notes
Same year: 2020 GMC Sierra 1500 suspension parts · 2020 GMC Sierra 1500 brake parts · 2020 Chevy Silverado 1500 shock parts (same chassis).
Leveling the rake? Compare kits for this Silverado/Sierra generation: 2019–2024 Silverado / Sierra 1500 2 Inch Leveling Kit. Gabriel NML1032 is a 2 in front leveling assembly for 4WD, not a stock-height replacement.
2020 GMC Sierra 1500 shocks — T1XX shop focus
2020 does not have a Classic twin. Match AT4 versus a standard Sierra before you pick a front, and match 4WD versus RWD on the Gabriel leveling strut.
What usually brings people here
- Nose dive or a leaking front strut → stock-height Front 4600, or Front 5100 if you want a little front lift. AT4 → 24-337069.
- Rear squat or a loose highway feel → 24-293464 (order two) or Gabriel G63959. A 0–2 in rear lift can use Fox 987-24-029.
- Active Ride Control / Adaptive Ride Control and electronic adaptable suspension are called out as exclusions on the Bilstein pairs and on Gabriel 61690 for 2022–2024. Do not ignore that line.
Shop notes only — not a service manual. Use the factory procedure for wrench work, torque, and safety steps. Leave a comment with 4×2 vs 4×4, AT4 / Denali, and whether the truck has Adaptive Ride Control if you want a part-number check.
2020 GMC Sierra 1500 front shocks / struts
- Front 4600 — Bilstein front B6 4600 pair, 2019–2025 Silverado/Sierra 1500, stock (0 in) front height, without Active Ride Control, excludes Trail Boss. On Sierra, AT4 off-road package uses the shorter-lift 5100 set below
- Front 5100 — Bilstein front B8 5100 pair, 2019–2025 Silverado/Sierra 1500, about 0–2.5 in front lift, without Active Ride Control, excludes Trail Boss. Not the AT4-specific set
- 24-337069 — Bilstein front 5100 set for Trail Boss / AT4 off-road package, 2019–2025, about 0–1.1 in front lift. On Sierra, AT4 is the off-road trim name
- NML1032 — Gabriel OffGrid Nomads 2 in front leveling strut, direct fit 19–25 GMC Sierra 1500 4WD (and Silverado 1500 4WD). Listing reads as one assembly — order a pair if both front corners are coming off
2020 GMC Sierra 1500 rear shocks
- 24-293464 — Bilstein 4600 rear, single shock, 2019–2024 Silverado/Sierra 1500 4WD or RWD. Order two for the axle
- Rear 5100 — Bilstein rear B8 5100 pair, 2019–2025 Silverado/Sierra 1500, 0–1 in rear lift, without Active Ride Control, excludes Trail Boss
- G63959 — Gabriel Ultra rear. Fitment line covers 2008–2024 GMC Sierra 1500 (and Silverado 1500). Order two
- 61690 — Gabriel ProGuard rear. 2008–2021 GMC Sierra 1500, and 2022–2024 except electronic adaptable suspension. Order two
- 987-24-029 — Fox Performance Series 2.5 rear IFP, 2019–2025 Silverado/Sierra 1500, 0–2 in rear lift. Order two
Fitment notes
These rows are for the T1XX GMC Sierra 1500 (new body, 2019–2024). Not 2014–2018 K2XX, not 2019 Classic / LD, not 2022 Sierra 1500 Limited, not 2500/3500 HD, not Yukon or Yukon XL.
Gabriel G63959 and 61690 also appear on older Sierra 1500 fitment lines (the Ultra number runs 2008–2024). That does not make a K2XX front strut correct for this truck. Front struts on this page are the T1XX pairs only.
Related: 2020 GMC Sierra 1500 suspension parts. 2020 GMC Sierra 1500 brake parts. Gabriel shocks and struts catalog. Bilstein catalog guide. KYB shocks and struts catalog. Same-chassis Chevy: 2020 Chevy Silverado 1500 shock parts.
Leave a comment with 4×2 vs 4×4, AT4 / Denali, and the symptom if you want a part-number check. #HAPPYMOTORING
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