Details
Core 4x4's Crawl Series rear upper control arms replace the worn factory stamped-steel arms on the GMC Yukon XL 1500 (2000–2006). The factory arms use soft rubber bushings and a fixed length, so there's no way to correct pinion angle after a lift or leveling kit. These Core 4x4 arms are a serious step up: DOM steel tubing and forged Rock Jock Johnny Joints at both ends for maximum articulation, with adjustable length to set rear pinion angle back to spec.
Includes: Rear upper control arms (pair); mounting hardware (bolts, nuts, and washers).
Specs:
- Tubing — 1.5 in. o.d. × 5/16 in. wall DOM steel
- Joints — forged Rock Jock Johnny Joints, both ends (double-threaded)
- Adjustable length — for pinion-angle correction
- Lift range — 0–6 in. and up
- Made in the USA
- Lifetime warranty — bend it or break it, we'll replace it
- Wear items (bushings, joints) — covered for 18 months
Suspension Type — Standard or Autoride (Z55): Select at checkout. Z55 trucks have factory rear air leveling; the Autoride version includes the ride-height sensor mounting tab on both rear upper arms. If you're not sure which you have, check the RPO sticker in the glove box for a Z55 code.
Notes:
- Hardware is included with your arms. If you ever need replacements down the road, the matching kit is available separately.
- Running a lift? The 4-piece rear set (CRL-G-800-YXL-RS4) adds the matching lower arms to replace all four rear arms in one job.
Parts:
- Forged Rock Jock Johnny Joint, right-hand — CE-9112N-22 (1 per arm, 2 for the pair).
- Forged Rock Jock Johnny Joint, left-hand — CE-9112NL-22 (1 per arm, 2 for the pair).
- Replacement hardware kit — CRL-G-800-RU2-HWK.
Fits:
- Chevy Tahoe (2000–2006)
- Chevy Suburban 1500 (2000–2006)
- Chevy Avalanche 1500 (2002–2006)
- GMC Yukon / Yukon XL 1500 (2000–2006)
- GMC Yukon Denali / XL Denali (2001–2006)
- Cadillac Escalade / ESV / EXT (2002–2006)
- 1500-series only. Does NOT fit 2500-series HD.
Built With
Tubing: 1.5" OD, 5/16" wall DOM · Joints: Rock Jock Johnny Joints, both ends
| Make | Model | Submodel | Years |
|---|---|---|---|
| GMC | Yukon XL 1500 | 2000 - 2006 |
Construction & Materials
Tubing: 1.5" OD, 5/16" wall DOM · Joints: Rock Jock Johnny Joints, both ends
| Brand | CORE 4X4 |
| Color | Black or Blue or Charcoal or Green or Light Green or Orange or Purple or Red or White or Yellow |
| Lift Size | 0" — 6" or 6"+ |
| Series | Crawl Series |
| Suspension Type | Standard or Autoride (Z55) |
Use the vehicle selector on our website to shop by your year, make, and model. On product pages, use the kit builder to select your color, series, lift height, and any add-on options, then add to cart. If you need help, call or email our team.
Standard orders typically ship within 1–3 business days of ordering. Custom color orders take approximately 5–10 business days. Because everything is built in-house, we can turn orders quickly even for custom specifications.
You can reach our team through the contact form on our website, or browse to the Contact Us page. Our team is available to answer pre-sale and technical questions before and after your purchase.
Reviews of Core 4x4
Specifications
| Color | Black, Blue, Charcoal, Green, Light Green, Orange, Purple, Red, White, Yellow |
| Lift Size | 0" — 6", 6"+ |
| Suspension Type | Standard, Autoride (Z55) |
| Brand | CORE 4X4 |
| Series | Crawl Series |
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