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Buyer Guide · Jun 1, 2026

2017 · GMCSierra SLE Crew Cab Standard Bed

Asking price$0
Public guide
Asking$12,500
Mileage385,000 mi
Engine5.3L 8-Cylinder
TransmissionAutomatic 6-spd
DrivetrainRWD
BodyTruck

What the data shows

This 2017 GMC Sierra has accumulated 385,000 miles in roughly eight years. The L83 engine is known to be durable, but at this mileage, the transmission and engine top-end components are living on borrowed time. The asking price of $12,500 is above market for this mileage level. Budget about $12,700 over the next 12–24 months for a transmission rebuild, AFM lifter failure, and cooling system overhaul.

Green flags

  • Highway Miles Likely

    385k miles in ~8 years means extended highway cruising, which is less stressful on drivetrain than city miles.

  • L83 Engine Longevity

    the 5.3L EcoTec3 is a proven durable engine when maintained; high-mileage examples exist.

What’s costing this car points

Every car starts at 10. Each problem below takes points off. Serious and expensive problems take more, and so do problems that usually show up at about the miles this car has now.

  • 6-Speed Automatic Transmission (6L80) — Impending Failure
    $3,500 to $5,200 to fix
    −4.4
  • Active Fuel Management (AFM) Lifter Collapse
    $2,800 to $4,500 to fix
    −1.0
  • Front Suspension & Steering Wear
    $1,000 to $1,800 to fix
    −0.4
  • 4 smaller items
    −0.7
Fixing the top three$7,300 to $11,500
3.5/10
ReliabilityPoor

7.0 if the top three turn out fine. Ask the seller for repair records.

Deal0.0
7 open issues
Critical
01
Major
05
Caution
01

Cross-referenced 3 citations across 7 findings, including 4 owner-report sources.

7 Findings7 open, 1 critical

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