Sloppy workmanship?
Dirtbag mechanics are lots of places. No pride in their workmanship at all. It's one of the main reasons I do all my own work.
No excuse at all for the fuel filter coming loose.
I just looked up the water pump bypass on the dirtymax. It's a tube with o-rings on both ends. It looks like they have to come off to R&R the thermostat.
It's a whole lot easier and more accessible to R&R than the old smallblock bypass hose.
This guy talks about using a non-standard fuel injection o-ring on the thermostat end of the tube and he says GM techs usually don't replace the o-rings.
GM 94011603 Radiator-By-pass Pipe LOWER Seal 94011603 to the water pump.
GM 94051259 Fuel Injection O-Ring UPPER seal on the end of the tube where it goes into t-stat housing.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
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