Hi guys, I've got a 2004 Chevy 2500HD, that is losing coolant. I've found that it seems to be coming out of the overflow of the reservoir. I've been told this is due to a blown head gasket. I've been quoted about $6k to replace the gaskets, send heads to the machine shop, put in ARB studs and check the injectors and put it all back together. The machine shop bill will be about $4000 of the $6k. Plus about $3k for injectors if they need work/replacement. I can only imagine they do since my truck has 330K miles. Also, my engine seems to be leaking oil like all the gaskets are getting eaten from the inside out meaning there is diesel in my oil... I always change my oil when due along with a quality filter, fuel filter, trans fluid drain and fill and filter and lastly the air filter, been doing this for a few years now. But I can see that my front cover is leaking oil pretty bad.
So, sell the truck for $5k? Buy a new one that I can't afford or buy another used one that I'll have to work on in 5 years. Or fix the one I have.
A used decent truck is about $25K.
Just fixing my head gasket problem is about $10K.
or get rebuilt engine https://www.ebay.com/itm/GM-Duramax-...275.c10http:// ($5500), new 100% injectors ($3000), new turbo ($2000), DT750 Allison ($4500) and some other upgrades (I'm looking for advice from you) for around $15K give or take.
i replaced my head gaskets and injectors for about $4000, i did it myself. the overpressurization is probably from head gasket failure or unsealed injector cups, being the cups themselves or the copper washer sealing the injector inside the cups. the fuel in the oil issue is probably the injector or the hardlines connected to it under the valve cover, or the fuel return lines not sealed correctly under the valve covers. i used XDP for the injectors, head gaskets, arp head studs and a few other parts from e-bay. quality products aren't cheap but are worth the investment if you plan on keeping the truck. save up the cash and do it right the first time. you will be glad you did.
oh can't edit the post... also do the valve lash adjustment for the pushrods while you're in there... always use new seals and gaskets, never reuse those pesky under valve cover fuel return line seals, injector copper washers, or o-rings on the injector cups. DON'T FORGET THE RED LOCKTITE ON THE BOTTOM OF THE INJECTOR CUPS!!!
Its not a simple job but if your mechanically inclined you should have no problem, just pay attention to all of the torque values buy the complete install kits and take your time. This job isnt super hard or technical but very time consuming.
2003 Silverado Fass 165, 45% over injectors, Banks big head, Banks 6 gun, Banks Exhaust and filter. Bed Carpet, Pace Edwards electric Tonneau Cover. 122000 miles
Well, I've been remodeling the house.... so I'm not saving any money. Truck now has over 336K miles on it and is still strong. I just keep a case of DexCool in the truck. It has never overheated. I plan on building a garage next year since I don't currently have one. I'm in VA too... Spotsylvania County. One of these days.... One of these days.