2018 GMC Sierra 1500 5.3L Used Transmission, 42k Miles, Grade A
2018 GMC Sierra 1500 5.3L Used Transmission, 42k Miles, Grade A 1
UsedTransmissionGrade A

2018 GMC Sierra 1500 5.3L Used Transmission, 42k Miles, Grade A

Option: (AT), 4x2, 5.3L, 6 speed (opt MYC), w/o tow package

2018 Sierra 1500 · All Sierra 1500 Transmissions

Miles
42k - 48k
$3,990– $4,389

Price range reflects part condition & grade. You'll see your exact price at checkout.

Free shipping to commercial addresses

Only 1 of this exact unit in stock — order online for our lowest price

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Additional Details

Part TypeTransmission
Year2018
MakeGMC
ModelSierra 1500
Option(AT), 4x2, 5.3L, 6 speed (opt MYC), w/o tow package
Mileage41,526 - 47,755 mi
ConditionUsed
Part GradeA
Unit Price$3,990 - $4,389
StockIn Stock

Product Description

This used 2018 GMC Sierra 1500 5.3L transmission is a grade A replacement from a donor GMC Sierra 1500 built for 2018, with about 41,526 - 47,755 mi on the donor vehicle. The listed option is (AT), 4x2, 5.3L, 6 speed (opt MYC), w/o tow package. Use that 5.3L size and the option code with the VIN so the transmission matches the sensors, wiring, and computer in the vehicle. This unit is priced at $3,990 and is offered in stock for shipping.

Thoroughly inspected & tested
Grade A quality rating
41,526 - 47,755 mi verified
2-year warranty included

Returns, Warranty & Shipping Summary

  • Returns accepted within 30 days of delivery (pre-approval required).
  • Items must remain in original assembled condition — no tampering or disassembly.
  • 25% handling fee applies; customer responsible for return freight.
  • Free shipping to commercial addresses (Residential +$250).
  • Includes 2-year limited warranty on internal components.

For full details, see our

Customer Reviews

4.8
Based on 15 reviews
O

Olivia Perez Verified Purchase

Jul 13, 2026

State Auto Parts kept me updated the whole way and the refurbished engine arrived spotless. Bolted right in and the warranty registration was painless.

J

Jessica Lee Verified Purchase

Jun 28, 2026

Outstanding service! The transmission was delivered quickly and works perfectly. The quality exceeded my expectations for a used part.

J

John Martinez Verified Purchase

Jun 20, 2026

Perfect fit for my vehicle! The engine runs smoothly and was exactly as described. Installation was straightforward, and the warranty gives me peace of mind. Highly recommend State Auto Parts!