Shop Turbo by Category
Filters
46 products
Not sure it fits your truck?
Our Wildwood, FL techs will confirm the right part for your build before you buy.
Call or Text (352) 722-5295Turbo on the 2007.5-2010 Chevrolet LMM
GM carried the same basic Garrett GT3788VA over from the LLY and LBZ and revised it for better efficiency on the LMM. It is water-cooled and feeds an air-to-air intercooler. Boost is set by a ring of movable vanes inside the turbine housing. An oil-pressure-controlled solenoid actuator moves a unison ring, the ring pivots all the vanes together, and a vane position sensor reports where they sit. On a Silverado HD pickup rated at 365 hp and 660 lb-ft, that vane mechanism is the clever part of the turbo. It is also where most LMM turbo trouble starts.
What fails and why
Carbon is the main enemy. Soot packs the vanes, their pivots and the unison ring until they stop moving freely, and trucks that idle a lot or cruise at one steady speed are the most likely to stick. There is no fixed mileage for it on the LMM, but it tends to happen sooner than on the LBZ. Symptoms include sluggish or erratic boost, P0299 underboost, P003A vane position not learned, P2563 position sensor performance, and P0234 overboost if the vanes stick closed. Some trucks pull hard down low and go flat on top. Others do the opposite.
Not every stuck-vane complaint is the vanes. A failed actuator or solenoid, a bad sensor or a wiring fault can mimic sticking, and a dead actuator means the vanes do not move at all. The DPF takes a toll too. Its backpressure can push soot past the shaft seals and add heat stress to the turbine and bearings, and a failed regen can set a P0299 that looks like a turbo fault. Watch for oil at the compressor or soot in the intercooler. At high miles the bearings wear: a little shaft play is normal, but a compressor wheel you can move toward the housing means rebuild or replace.
Stock replacement vs. upgrade
If the vanes are only carbon-stuck, cleaning is a real repair, not a shortcut. Pull the turbo, take the turbine side apart, clean the vanes, pivots and unison ring, inspect the ring slots, and reassemble with high-temp anti-seize. Before you condemn a turbo for lag, fix exhaust leaks upstream at the up-pipe and manifolds. When the turbo is worn out, an exchange GT3788VA-style unit is the stock replacement route, and stock replacements are sold on a core exchange. If the old turbo died from debris, find the cause first, because a cracked piston can send debris into the turbine and pressurize the crankcase. To keep a healthy turbo healthy, give it periodic moderate-to-heavy acceleration and use grade braking so carbon does not pack the mechanism.
What we carry
For the turbo itself there is the XDP XD555 Xpressor, a remanufactured stock replacement listed for the 2007.5-2010 6.6L, and a No Limit Fabrication VGT turbocharger listed for 2004.5-2010 Duramax trucks. The rest of the collection is the hardware a turbo job needs. Alliant Power supplies the AP91000 vane actuator and the AP0162 installation kit. MAHLE covers mounting gasket sets, the F32918 up-pipe-to-turbo gasket and T4 and T6 flange gaskets. Merchant Automotive adds the 10124 install gasket kit, a billet drain fitting and S300/S400 oil line kits. PPE brings drain-line gaskets, oil feed fittings and titanium turbo blankets, and Mishimoto and WCFab have heat blankets too. You will also find billet resonator plugs from Fleece Performance Engineering, Merchant and XDP; BD Diesel V-band and hose clamps plus the Cool Down Timer 2; Turbosmart constant-tension clamps; G&R Diesel S300/S400 drain and oil supply kits; and the Calibrated Power Solutions Stealth Boost Tester regulator and adapters for pressure-testing the intake side. Browse all turbos or head back to the Duramax hub.
Fitment notes
This collection is for the GMT900-body 2007.5-2010 Silverado 2500HD and 3500HD in WT, LT and LTZ trim; the 3500HD came single or dual rear wheel. A 2007 Silverado HD Classic is the older GMT800 body with the LBZ, and 2011-up trucks have the LML, so confirm which one is in your driveway. Many turbo parts here are listed for 2004.5-2010 because Garrett 736554-0015, 759622-0005 and 790032-0004 (GM 97387896) fit the LLY, LBZ and LMM. Only the LLY needs the 771864-0001 position sensor adapter; the LMM does not. The vane position sensor, 763527-0712, covers 2004.5-2016. Oil feed and drain gaskets come separately from the inlet and mouthpiece gaskets. Kits labeled S300/S400 are for aftermarket frame turbos, not the factory Garrett. When in doubt, verify by VIN.
Frequently asked questions
Why did my Silverado set P0299 right after a regen?
On the LMM, a failed DPF regen can set a P0299 underboost code that looks turbo-related even when the turbo is fine. Sort out the regen side first. If you also find oil at the compressor or soot in the intercooler, DPF backpressure may be pushing soot past the turbo's shaft seals, and the turbo deserves a closer look.
Can I clean the vanes instead of buying a turbo?
Yes, if the problem is carbon only. The turbo comes off, the turbine side is taken apart, and the vanes, pivots and unison ring are cleaned and the ring slots checked before it goes back together with high-temp anti-seize. If the bearings are worn and the compressor wheel moves toward the housing, cleaning will not save it.
Does my LMM need the position sensor adapter cable?
No. The 771864-0001 adapter is only needed on the LLY. LBZ and LMM trucks do not use it, so a turbo listed for 2004.5-2010 fits your Silverado without one.
How do I keep the vanes from sticking again?
Drive it like a diesel. Periodic moderate-to-heavy acceleration and grade braking keep the vanes moving so carbon does not pack the mechanism. Trucks that spend a lot of time idling or cruising at one steady speed are the ones that stick most.
What should I order along with a replacement turbo?
Plan on gaskets, because the inlet or mouthpiece gaskets and the oil feed and drain gaskets come as separate kits. The Alliant Power AP0162 installation kit, the MAHLE mounting gasket sets and the Merchant Automotive 10124 kit for 2007.5-2010 are good places to start. Add the PPE upper and lower drain-line gaskets if your kit does not include them.
Not sure what fits? Call the shop at the number in the header, or use the fitment checker on any product page. We install everything we sell.