Hey erybody, I'm new here, but have a quick question for ya. I have a 98' k1500 6.5. Runs great, but the code p0236 intermittently pops up, and takes my turbo with it. My turbo works about 25% of the time. I replaced the MAF sensor, the air filter, had a mechanic check all vacuum lines and pump itself. I've replaced a few other things that I've forgotten, but long story long. I've narrowed my problem down to either a failed boost or wastegate solenoid, OR!!! my terribly loud exhaust manifold leak. Someone help please, I'm running out of both time, and money.... and patience. Thanks kin.