Join Date: Sep 2010
Location: Maritimes, Canada
Im wondering what ever came of yor issue. I had a new one installed on my truck last summer and when i got it back there was a high pitch 'whine' that made it sound like a super charger, So the shop changed brands to a napa one that still whined pretty bad, so From what we i could find online was to just drive it and let it break in. Now that i have about 6k miles on it, the sound has changed to a very loud nocking/rattle. It sounds like a old 6.9 ford diesel. I aleady know the answer is gonna be get a new pump. But this shit is gettin old. Who makes a good water pump for these things!
Seems to me there was a gear lash issue on these WPs a while back. I would call Merchant Auto about it because I know they have the TIG'd water pumps for sale and can help you with experience on the whine/rattle from the water pump install as well.
2005 Silverado EC/SB, LLY, 4WD, EFI DSP5 V2 (Idaho Rob at ATP), Edge CTS w/ EGT probe, LML Exhaust Manifold, PPE shimmed FPRV, Banks LBZ air cleaner, Profab intake, LBZ Turbo Mouthpiece, Kennedy twin lift pumps w/ megafilter, Corsa 304 SS Exhaust, Mike L tranny cooler, EXAXT Steering System, Redhead Power Steering Box w/ Amsoil PS fluid, Green Torsion Keys, Allison Deep Pan w/ Suncoast Filterlock and Transynd ATF, Bilstein 5100's (Norcal), Cognito UCA's, 17" NBS alloy rims, 265/70R17 Michelin LTX M/S2's, Pioneer AVH-P3200BT, CubbyCam Backup Camera, Pop & Lock Power Tailgate Lock, Extang Solid Fold Tonneau Cover, Tekonsha P3 Brake controller, Alphatherm AT-38OD Washer Fluid Heater