Shop By Vehicle
Shows all parts for this vehicle — for exact-fit matches, try AI Search above

Questions?

Call or Text 281-742-9651

2021 Chevrolet Tahoe Suburban GMC Yukon Cadillac Escalade Junction Block

$ 143.58
🏁 Please confirm this part fits your vehicle before ordering
🏁 CHECKPOINT 🏁
100% Genuine OEM Factory original part
Fast UPS Shipping Any order, any size
Easy Returns No-hassle return policy
Secure Checkout SSL encrypted payment
Flat Rate Shipping
Any order • Any size • USA
$8.97
Have a question?
Check our FAQ for quick answers
→

2021 Engine Wiring Harness Junction Block (Fuse & Relay Box) for Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon and Cadillac Escalade

This is a Genuine OEM GM engine wiring harness junction block, also known as a Fuse & Relay Box, for the 2021 Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon and Cadillac Escalade. It is the central junction point for engine wiring harness connections and a direct replacement for the factory unit.

Fitment Alert – Confirm These Details Before You Order

Check each line below against your vehicle before ordering.

Chevrolet Tahoe 2021, 4 Door 1/2 Ton, 8 Cyl 5.3L or 8 Cyl 6.2L engine
Chevrolet Suburban 2021, 1/2 Ton, 8 Cyl 5.3L or 8 Cyl 6.2L engine
GMC Yukon 2021, 1/2 Ton, Yukon and Yukon Denali, 6 Cyl 3.0L Diesel, 8 Cyl 5.3L or 8 Cyl 6.2L engine
Cadillac Escalade 2021, 1/2 Ton, Escalade and Escalade ESV, 6 Cyl 3.0L Diesel or 8 Cyl 6.2L engine
Part Type Engine Wiring Harness Junction Block, also known as a Fuse & Relay Box
Fitment Type Direct replacement for the factory unit
Included Junction block only
Not Included Any other components; only the junction block is included

Quick Part Facts

  • Condition: New
  • Brand: Genuine OEM GM
  • Part Type: Engine Wiring Harness Junction Block / Fuse & Relay Box
  • Fitment Type: Direct Replacement
  • Year: 2021
  • Compatible Engines: 3.0L 6-Cyl Diesel, 5.3L 8-Cyl, 6.2L 8-Cyl (by model as listed in the Fitment Alert)
  • Included: Junction Block only

Fitment Chart

Year Range Make Model Trim/Engine Notes/Options
2021 Chevrolet Tahoe 8 Cyl 5.3L, 8 Cyl 6.2L 4 Door 1/2 Ton
2021 Chevrolet Suburban 8 Cyl 5.3L, 8 Cyl 6.2L 1/2 Ton
2021 GMC Yukon 6 Cyl 3.0L Diesel, 8 Cyl 5.3L, 8 Cyl 6.2L 1/2 Ton; Yukon/Denali
2021 Cadillac Escalade 6 Cyl 3.0L Diesel, 8 Cyl 6.2L 1/2 Ton; Escalade/Escalade ESV
Why Choose Conquest
No Games. Just Genuine Parts.
100% Genuine OEM
No aftermarket substitutes, no knockoffs — every part is the real thing, verified before it ships.
Fair Prices, No Games
Founded by someone who spent 15 years watching dealerships mark up and mislead — we built this to be different.
Verified In-House
Every part is checked against the OEM part number before it ships — not dropped straight from a warehouse untouched.
Real Person, Real Answers
Not sure it fits? Text or email us — you'll hear back from someone who actually knows the part, within 24 hours.

The Latest From Our Experts

View all
Real Person. Real Answers.

Not sure a part fits your vehicle? Skip the guesswork — text or email us and hear back from someone who actually knows the part.

Text: (281) 742-9651 Email Us
Back to top