2001 GMC K2500 HD 219k Mile Service
Posted: Sun Jun 29, 2025 5:24 am
Oil change, transmission fluid/spin-on filter change, rotated tires
Held off on changing the air filter, but when I found that there was a stored turbo boost code I changed it. Looks like the code is still present/occurring under likely max boost conditions (2k RPM, heavy load). I'm suspicious of a minor exhaust manifold-to-up-pipe leak since I saw a little bit of soot at that joint - the up-pipe face looked pretty corroded when I changed the driver's side exhaust manifold. Guess I'll have to try to find an up pipe. Hopefully the bolts come out of the turbo exit - I broke all 3 in the manifold I was changing.
Held off on changing the air filter, but when I found that there was a stored turbo boost code I changed it. Looks like the code is still present/occurring under likely max boost conditions (2k RPM, heavy load). I'm suspicious of a minor exhaust manifold-to-up-pipe leak since I saw a little bit of soot at that joint - the up-pipe face looked pretty corroded when I changed the driver's side exhaust manifold. Guess I'll have to try to find an up pipe. Hopefully the bolts come out of the turbo exit - I broke all 3 in the manifold I was changing.