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Walt and his crew are the best of the best. The 6.5 experts without a doubt. Any questions I had were answered within hours and they were right on. I'll never buy another 6.5 part from no one other SS Diesel.
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From: Doug B.
wow what great guy. extremely fast shipping, great products, and great customer service. definitly recommend doing business with him. every thing came with directions and a number to get a hold of them incase of problems. thanks walt -dieselboy28-
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6.5TD C/K Trucks  >  Turbochargers & Parts  >  GM-4 Wastegate Actuator, Brand New

Brand New GM-4 Turbo Wastegate Actuator. Fits all vehicles using the GM-4 Turbo, which includes 94-95 C/K trucks

GM-4 Wastegate Actuator, Brand New

GM-4 Wastegate Actuator, Brand New

Model: ssd-6422 $99.99
United States and Canada - All Deliveries to the United States and Canada will be made by UPS. You will be quoted the shipping cost and presented with delivery options at the time of checkout. See our shipping calculator for more information.
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Brand new GM Turbo Wastegate Actuator p/n 12456422. Fits all GM-4 Turbos. GM-4's were used in 94-95 C/K pick-ups, suburbans, Tahoes, and Yukons.

The actuator contains a diagpragm and is controlled by vacuum based on a command by the ECM. It DOES NOT contain a spring of any kind. Vacuum must match fuel rates for your diesel to work properly. This is why those spring gadgets sold by the scammers just do not work. They not only not work, but will trip codes too. The computer must be in control of boost. If you want to raise boost, you upgrade the chip or ECM. Fuel rates have to match boost. Do not eliminate the vacuum system or wastegate actuator. 

GM-4 Wastegate Actuator, Brand New

 

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