Mon-Fri   8:00AM – 5:00PM
Get a Rebuild Quote
pt turbo no shadow
PT Turbo
Reman Borg Warner Turbocharger V2S - 12709901039

Ford 6.7L Powerstroke Turbocharger Guide: GT32 Failures, Symptoms & Replacement Cost

/ Diesel Truck Platforms / By

The Ford 6.7L Powerstroke turbocharger is one of the most sophisticated factory diesel turbos ever bolted to a pickup, and when it fails it takes your truck down hard. The 2011-2014 trucks run the Garrett GT32 SST, a single-sequential unit with a double-sided compressor wheel that does the work of two turbos in one housing. That design is brilliant on paper and brutal on your wallet when the bearings, the VGT actuator, or the unison ring let go. If you turn wrenches on Super Duties for a living, you already know the GT32 is not a “wait and see” part. Here is exactly how it fails, what the symptoms look like, and what replacement actually costs.

How the GT32 SST Turbo Works (and Why It Fails)

Ford and Garrett built the GT32 SST as a single-sequential turbocharger. Instead of two separate units like the 6.4L Powerstroke twin-turbo setup, the GT32 uses one turbine wheel and a compressor wheel that is machined on both sides. Low-pressure air gets pulled across the back side of the compressor and fed into the front side for a second compression stage. That gives you fast spool down low and big airflow up top from a single shaft.

The variable geometry turbine (VGT) controls boost with a movable vane ring (the unison ring) driven by an electronic actuator. This is where most of the trouble starts. Soot and carbon build up between the vanes, the ring sticks, and the actuator overworks itself trying to move components that no longer move freely. Combine that with the high shaft speeds this turbo runs and you get a part that is sensitive to oil quality, EGR-laden exhaust, and short-trip idling.

For 2015 and newer 6.7L trucks, Ford switched to the larger Garrett GT37 single turbo, which addressed some of the spool and durability complaints but kept the VGT architecture and many of the same failure modes.

Common 6.7L Powerstroke Turbo Failures

After four-plus decades rebuilding diesel turbos, we see the same handful of GT32 failure patterns come across the bench again and again:

  • Bearing failure and shaft play. Excessive end play or radial play lets the compressor or turbine wheel contact the housing. Once you hear the grind, the turbo is done.
  • Stuck VGT / unison ring. Carbon binds the variable vanes. You get overboost, underboost, or limp mode codes because the actuator can’t hit commanded position.
  • Electronic actuator failure. The actuator motor and position sensor fail electronically or seize mechanically. This throws turbo actuator codes and kills boost control.
  • Turbo speed sensor faults. The 6.7L monitors turbo shaft speed. A failed sensor or an overspeed event will set codes and pull power.
  • Oil seal leaks. Worn seals push oil into the intake or exhaust, showing up as blue smoke and a fouled charge air system.
  • Coolant line and feed line issues. The GT32 is oil- and coolant-cooled. Clogged or leaking lines starve the center section and accelerate bearing death.

Symptoms of a Failing 6.7L Powerstroke Turbo

Catching a turbo before it grenades saves your intake, intercooler, and sometimes your engine. Here is how the symptoms stack up by severity.

Severity Symptom Likely Cause
Early Sluggish throttle response, slow spool Sticking VGT vanes, soot buildup
Early Whistle or whine that changes pitch Boost leak or early bearing wear
Moderate Check engine light, P0299 / P132B / P2563 codes Actuator or boost control fault
Moderate Blue or black smoke under load Oil seal leak or incomplete combustion
Severe Limp mode, hard power loss Stuck VGT, overspeed protection, actuator failure
Severe Grinding, screeching, metal-on-metal noise Failed bearings, wheel contact
Severe Excessive oil consumption, oil in intercooler Blown center section seals

If you are also working on older Powerstrokes, the warning signs overlap. Our breakdown of 6.0L Powerstroke turbo failure warning signs covers the VGT-stick and actuator symptoms that carry over to the 6.7L platform.

Diagnosing Before You Condemn the Turbo

Do not throw a $2,000-plus turbo at a problem that might be a $200 line or sensor. Run through this before you pull the unit:

  • Scan and record live data. Watch commanded vs actual VGT position, boost pressure, and turbo speed. A wide gap between commanded and actual points to a sticking ring or failing actuator.
  • Check shaft play by hand. With the inlet off, feel for axial and radial movement on the compressor wheel. Any contact with the housing condemns it.
  • Inspect the charge air system. Oil pooling in the intercooler or boost tubes confirms seal failure.
  • Verify oil and coolant feed. Restricted oil supply is the number one killer of replacement turbos. Flush the feed line or replace it on every install.
  • Pull intake and look at the EGR soot load. Heavy carbon means your replacement will fail the same way if you do not address the root cause.

If you are unsure whether your VGT is recoverable or truly dead, the team at PT Turbo has been doing this since 1978. Reach out to our techs with your codes and live data and we will help you make the call.

Replacement Options and Cost

You have three real paths on a 6.7L turbo: brand-new OEM, a quality remanufactured unit, or rebuilding your original core. Each has a place depending on budget, downtime, and how long you plan to keep the truck.

Option Typical Cost (Part Only) Best For
New OEM Garrett turbo $2,500 – $3,800 Late-model trucks, warranty work, no core hassle
Remanufactured turbo $1,300 – $2,200 Best value, OEM performance, faster turnaround
Rebuild your core $700 – $1,400 + labor Keeping your original matched unit, lowest cost

A quality remanufactured turbocharger is the sweet spot for most owner-operators and fleets. You get new bearings, balanced wheels, a fresh or rebuilt actuator, and tested boost control at a fraction of OEM list price. If your core is still good and you want to keep your exact unit, our turbocharger rebuild service restores it to spec on the bench with the right tooling and balancing equipment. You can also shop our full turbo catalog to match your exact build year.

Add roughly 6 to 10 hours of labor for a 6.7L turbo replacement depending on whether you are dropping the cab or working through the wheel wells, so plan your total accordingly.

Installation Kits and Gaskets You Need

Never reuse exhaust gaskets, oil feed seals, or coolant line crush washers on a turbo install. A $30 gasket leak will ruin a $2,000 turbo or send you back in for a redo. PT Turbo stocks the install hardware to do the job once: