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Buyer Guide · Jun 22, 2026

2019 · GMCSierra Denali

Public guide
Mileage54,200 mi
Engine6.2L 8-Cylinder
TransmissionAutomatic 10-spd
Drivetrain4WD
BodyTruck

What the data shows

The 2019 Sierra Denali with the 6.2L engine offers great performance, but the AFM/DFM lifter issue is a well-known risk that could lead to a $3,000–$5,000 repair. At 54,000 miles, the transmission fluid service is due, and spark plugs will be needed soon. With clean title and low mileage, this truck is in a good position, but budget for these upcoming maintenance items and verify that the recalls have been completed.

Red flags

  • AFM/DFM Lifter Failure Risk

    known issue on 6.2L, potential $3k-5k repair.

  • Transmission Harsh Shifting

    some 10-speeds require fluid flush and software update.

Green flags

  • Idaho Location

    low road salt exposure minimizes rust risk.

  • Low Mileage

    54k miles on a 2019 is below average, reducing wear on major components.

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.

  • AFM/DFM Lifter Failure
    Usually shows up around 70k mi · $3,000 to $5,000 to fix
    −5.0
  • High Pressure Fuel Pump
    $800 to $1,200 to fix
    −0.2
  • Water Pump Leak
    $500 to $800 to fix
    −0.1
  • 6 smaller items
    −0.1
Fixing the top three$4,300 to $7,000

When this car gets expensive

The chance of a major repair as the miles add up. This one is at 54k, before the climb starts around 80k.

100%
75%
50%
25%
0%
You’re here · 54k
28k
55k
83k
110k
138k
165k
193k
220k
4.5/10
ReliabilityWeak

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

DealNo asking price
9 open issues
Critical
01
Caution
08
9 Findings9 open, 1 critical

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