Model year guide

2018 GMC sierra denali

Recalls, most-reported problems, crash-test ratings, fuel economy and what a 2018 GMC sierra denali is worth — from official NHTSA and EPA data. 1 on record.

2018 GMC sierra denali at a glance

Safety recallsNone

Owner complaints17

Included: that car's specs and build sheet, model-year recall campaigns and a fair price.

2018 GMC sierra denali recalls 0

No NHTSA safety-recall campaigns are on record for the 2018 GMC sierra denali.

Source: U.S. NHTSA, checked 4 Nov 2026. A campaign covers the model year; to see whether a particular car still needs the repair, check its VIN on NHTSA.gov or ask a franchised dealer.

2018 GMC sierra denali common problems

The most-reported problem areas across all 17 owner complaints filed with NHTSA — and what to check before you buy.

Engine

Listen for knocks or ticking, check for leaks and blue/white exhaust smoke, and make sure it doesn't overheat. No check-engine light should be on.

Structure

Inspect for rust, fresh undercoating, mismatched paint, uneven panel gaps and any sign of prior collision or frame repair.

Service Brakes

Brakes should feel firm and quiet — no grinding, pulsing or pulling. Check for an ABS light and uneven pad/rotor wear.

Steering

Steering should be tight and centered — no play, clunks or wandering. Test at low and highway speed; listen for power-steering whine.

Exterior Lighting

Confirm all headlights, brake lights, turn signals and reverse lights work, with no moisture inside the housings.

Power Train

Drive through every gear: watch for slipping, hard or delayed shifts, and shudder. Check for transmission/driveline leaks and noises.

Investigations & service bulletins

Manufacturer service bulletins 948

Technical notes the manufacturer sent to dealers about known issues and fixes. Useful to mention to a mechanic — they are not recalls and repairs may not be covered. Showing the 10 most recent of 948.

This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.

Bulletin PIT5698F · Sep 2026

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

Bulletin PIP4902W · Sep 2026

PI to help diagnose A/C concern

Bulletin PIT5099J · Jul 2026

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

Bulletin PIT3271Q · Apr 2026

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

Bulletin PIP6104 · Mar 2026

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

Bulletin PIP4902V · Mar 2026

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

Bulletin PIP4902U · Jan 2026

This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions without utilizing the support of General M…

Bulletin PIT5214G · Nov 2025

New Vehicle Monitoring Programs Section in IVH

Bulletin 13598 · Sep 2025

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

Bulletin PIP4902T · Aug 2025

Source: NHTSA Office of Defects Investigation, listed for the SIERRA DENALI. Model-year data, not specific to one car.

2018 GMC sierra denali trims & engines on record

Trims

Denali

Engines

6.2L 8-cyl

2018 GMC sierra denali vehicles on record

2018 GMC sierra denali Denali3GTU2PEJ7JG117223

Other GMC sierra denali model years

2013 2011 2008

2018 GMC sierra denali — frequently asked questions

Does the 2018 GMC sierra denali have any safety recalls?

NHTSA lists no safety-recall campaigns for the 2018 GMC sierra denali. Whether an individual car still needs a recall repair depends on its VIN — check it on NHTSA.gov or ask a franchised dealer. Recall repairs are done at no charge.

What are the most common problems with the 2018 GMC sierra denali?

Across all 17 owner complaints filed with NHTSA, the most-reported problem areas are engine, structure, service brakes.

Sources: NHTSA (recalls, complaints, crash tests), U.S. EPA (fuel economy). Vehicle data only — CarLogs never shows owner information.