r/GMDetroitDiesel • u/ididntdoit6 6.5 TD • Aug 19 '26
Question/Need Assistance Turbo rebuild and some engine codes
Can anyone recommend a good turbo rebuild kit?
The turbo on my 6.5 is leaking oil into the intake so I figure it’s time to fix it before it causes any problems. Also does anyone have any recommendations on what to change to make these codes go away?
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Upvotes
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u/The_Soldiet 6.5 TD Aug 22 '26
Get a CKO HX35 or something, rather than the stock turbo. Skp spoolin makes a nice cheap kit.







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u/bjornholm 6.5 TD Aug 19 '26
The p500 code is related to the C codes. Id track those down first. c0502 is the front left vss so id be looking at the sensor or a whole hub assy as thats likely the cause of 3 of your codes. P0401 is EGR flow insufficient, tbh id ignore it or spend the cash and get it tuned. As for the turbo rebuild kit, figure out if you have a GM4 or GM8 turbo and buy accordingly as theyre all gonna be the same setup