YearToAvoid

2005 GMC Sierra 2500 Reliability Data: Problems & Recalls

Caution The 2005 GMC Sierra 2500 has 115 complaints and a complaint index of 70, ranking 7th worst among 21 model years and earning a Caution verdict. Electrical system issues lead at 38% of complaints, with brakes close behind at 33%.

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

YearToAvoid Scorecard

Complaint Index
70/100
#7 of 21 Sierra 2500 years
Verdict
Caution
vs. other years of this model
Complaints
115
unique NHTSA reports
Recalls
1
distinct NHTSA campaigns
Crashes
4
reported in complaints
Fires
6
Injuries
5
Top issue
Electrical System
Best nearby year
2010
rated Best
NHTSA overall rating
Not rated
EPA combined MPG
9
8 city / 11 hwy
Injuries / deaths
5 / 0

Top 2005 GMC Sierra 2500 problems

Share of this year’s NHTSA complaints by component group. Groups with 15+ complaints have their own page.

  1. Electrical System44 (38%)
  2. Brakes38 (33%)
  3. Engine21 (18%)
  4. Steering16 (14%)
  5. Suspension, Wheels & Tires9 (8%)
  6. Transmission & Powertrain7 (6%)
  7. Structure & Body6 (5%)
  8. Other4 (3%)
  9. Airbags3 (3%)
  10. Fuel System3 (3%)

A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.

What owners report

  • Wiring harnesses near the blower motor and heater resistor pack burn or short out, sometimes with fire, often reported by 70,000 to 95,000 miles.
  • Daytime running light sockets melt or scorch after the factory bulbs run too hot.
  • Brake lines corrode and fail, with owners describing sudden loss of braking and crashes at high mileage.
  • Power steering assist cuts out unexpectedly, particularly at low speeds despite the dealer being unable to reproduce it at highway speeds.
  • A plastic trim piece under the dash can trap the accelerator pedal, preventing braking.
  • The Duramax diesel engine has overheated and shut down while driving on the highway.
2005 GMC Sierra 2500 complaints: complaints filed per quarter62005 Q32007 Q42009 Q22010 Q42012 Q32014 Q12015 Q32017 Q3
115 complaints filed with NHTSA from 2005 Q3 to 2023 Q4; peak 2012 Q3 (6).

2005 GMC Sierra 2500 recalls

1 NHTSA recall campaign list this model year.

  1. NHTSA 08V519000Oct 6, 2008Other133 vehicles

    Equipment adaptive/mobility

    Mobilityworks is recalling 133 my 2005-2006 ford e250, my 2000, 2004-2006 e350, my 2000, 2005 e450, my 2005-2006 gmc 2500, gmc 3500, and my 2006 dodge 2500 vans equipped with ricon platform style wheelchair lifts. These lifts fail to comply with the requirements of federal motor vehicle safety standard no. 403, "platform lift systems for motor vehicles." the anti-stow interlock may not detect the presence of a wheelchair or mobility aid user. The pressure sensing switch that detects the presence of weight on the platform was not adjusted to the necessary sensitivity level. The lift could stow even though someone or something is still on the lift.

    Risk: A lift occupant can be injured should the lift begin to stow unintentionally.

    Remedy: Mobilityworks is working with ricon to correct the wheelchair lifts free of charge (please see 07e097). Owners may contact ricon at 1-818-267-3000 or mobilityworks at 1-800-769-8267.

2005 GMC Sierra 2500 fuel economy and fuel cost

City
8 MPG
Highway
11 MPG
Combined
9 MPG
Annual fuel cost (EPA)
$5,150
15,000 mi/yr
Fuel
CNG
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2005 compared with other Sierra 2500 years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100’05’06’07’08’09’10’11’12’13’14’15’16’17’18’19’20’21’22’23’24’25
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2005Caution7011519
2006Good35661—
2007Caution60833—

All GMC Sierra 2500 years: best and worst →

Frequently asked questions

Is the 2005 GMC Sierra 2500 reliable?
It has a complaint index of 70 out of the 21 model years tracked, ranking 7th worst, and carries a Caution verdict based on NHTSA owner complaints and recalls.
What problems does the 2005 GMC Sierra 2500 have?
Electrical system complaints make up 38% of all reports, including wiring harness fires and melted running-light sockets, followed by brake issues at 33%, including corroded brake lines.
Does the 2005 GMC Sierra 2500 have any recalls?
NHTSA lists one recall for the 2005 Sierra 2500, covering wheelchair lift platforms on vehicles converted for mobility use; it is not a do-not-drive recall.
What year GMC Sierra 2500 should I avoid?
Among Sierra 2500 model years, 2020, 2021, 2022, 2024, and 2025 carry Avoid verdicts with higher complaint indexes than 2005's 70.
At what mileage do 2005 Sierra 2500 electrical problems show up?
The median mileage at failure for electrical system complaints is 70,000 miles.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.