MotorDeets

2008 GMC Sierra 3500: Recalls, Problems & MPG

Here are the deets on the 2008 GMC Sierra 3500: 3 recalls, 25 owner complaints.

3vehicle recalls
25owner complaints
0mention a crash
–best combined mpg
2008 GMC Sierra 3500
Photo: IFCAR · Public domain · Wikimedia Commons. Representative photo of this generation; trim may differ.

Recalls

3 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.

Electrical Vehicle recall #14V407000 · 2014 · 9,371 vehicles

What's wrong: Owners May unknowingly draw too much current through the vehicle's trailer harness resulting in the melting of fusible link for the auxiliary battery.

Why it matters: If the fusible link melts it May come into contact with adjacent components, damage the electrical center cover, the nearby wiring harness conduit and other vehicle components, increasing the risk of a fire.

The fix: Gm will notify owners and dealers will replace the jumper harness with one that includes a 40 amp inline fuse, and provide the owner with supplemental owner manual information, free of charge. The recall began on August 29, 2014.

Airbags Vehicle recall #15V324000 · 2015 · 330,198 vehicles

What's wrong: The affected vehicles are equipped with a passenger side frontal air bag that May be susceptible to moisture intrusion which, over time, could cause the inflator to rupture upon its deployment.

Why it matters: In the event of a crash necessitating deployment of the passenger's frontal air bag, the inflator could rupture with metal fragments striking the vehicle occupants, potentially resulting in serious injury or death.

The fix: Gm will notify owners, and dealers will replace the front passenger air bag inflator, free of charge. The recall began on July 27, 2015.

Airbags Vehicle recall #20V011000 · 2020 · 699 vehicles

What's wrong: These inflators May explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.

Why it matters: An inflator explosion May result in sharp metal fragments striking the front passenger or other occupants resulting in serious injury or death.

The fix: Gm will notify owners, and dealers will replace the front passenger air bag inflators, free of charge. The recall began February 11, 2020.

Most-reported problems

Owner complaints filed with NHTSA, by component. One complaint can list several components. 0 mention a fire, 0 injuries and 0 deaths were reported.

Airbags17
Tires2
Fuel system (diesel)1
Electrical1
Transmission & drivetrain1
Brakes (hydraulic)1
Body & structure1
Fuel system1

What owners describe

The 2008 GMC Sierra 3500 has 25 owner complaints, ranking #8 of 31 Sierra 3500 model years for complaints (about average; the typical year has 19). Complaints peaked in 2016 (12 filed that year). The typical problem showed up when the car was about 7 years old, at a median of 59,000 miles. Neighboring years: 2007 (16 complaints, 3 recalls), 2009 (5 complaints, 5 recalls).

Want the full repair deets? Get the factory manual.

Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2008 GMC Sierra 3500.

eManualOnline Download (PDF), keep forever

Closest thing to the factory manual for most years. Pay once, keep it.

Most $25–$78, one-time
Check 2008 GMC Sierra 3500 manual
Mitchell 1 DIY Online access, factory-level data

Pro-shop repair procedures, wiring diagrams and TSBs for your exact car.

From $19.99/mo · $39.99/yr
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ALLDATAdiy Online access, factory OEM info

OEM procedures, specs and recall/TSB info, the same source many shops use.

From $19.99/mo · $59.99/yr
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Haynes Print book or AllAccess online

Step-by-step photos written from a real teardown. Great for first-timers.

Books ~$30–$40 · AllAccess $34.99/mo
Check 2008 GMC Sierra 3500 manual

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FAQ

Does the 2008 GMC Sierra 3500 have any recalls?

Yes. NHTSA lists 3 vehicle recalls for the 2008 GMC Sierra 3500. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.

What are the most common 2008 GMC Sierra 3500 problems?

Owners have filed 25 complaints with NHTSA. The most-reported areas are airbags (17), tires (2), fuel system (diesel) (1).

Where can I get a 2008 GMC Sierra 3500 repair manual?

eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.

Other Sierra 3500 years

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