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I am about to buy a 6.6L Duramax 14' 2500hd Sierra with 136K on it. But I just learned it has a small heating core leak, the dealer is replacing the whole core prior to purchase. Should I proceed with this purchase? Or is this the sign of this truck going down hill. The service recorded were regular until 2018 then the car fax no longer shows any updates.
Any help would be appreciated, I have a 92 Sierra with a 5.7L small block so the diesel world I am not as comfortable with. Also do not want a newer truck as I do not want to deal with DEF and I would not be able to do a delete.
Looking for what else you guys recommend to replace. I Noticed one of my tie rod grease boots was busted, planning to replace both inner and outer tie rods, sway bay end link, sway bar bushings.
Anything else while I’m under there and have to get an alignment? Mileage is at 78,000 miles.
Looking to use MOOG parts. Running 33’s so if anyone else has upgraded to something beefier let me know!
Hey guys so I asked on Facebook and I didn't really get very far so I figured I'd bring it up here. 120,000 mi completely stock.
Here's what's going on.
so with the converter locked and I believe in 5th gear around 1500 RPM I randomly get what feels like a misfire when applying light throttle until the turbo spools up.
I bought this truck from an auction all the glow plugs were bad replaced all those.
The truck had some dead battery issues right before it went to auction so I looked at the stored codes but ended up clearing them because a lot of them were communication codes which would be related to a dead battery.
All filter replaced, all fluids (except trans and xfer) replaced.
I meant to write down the actual codes but one of them was for EGR and the other ones was for glow plugs.
I've replaced the glow plugs everything is completely fine as far as that goes. the filter head does like to lose a little bit of prime overnight so if I just fire it up first thing in the morning it'll run a bit rough if I put about two pumps onto the primer it runs completely smooth after start.
I have conflicting data from different scan tools some of them are showing the EGR experiencing large error % as far as deviation. My all tell is showing small amount of error (2% at idle) but not enough to trigger a code.
Doesn't feel like 605 torque if I'm honest. Pretty sure my 8.1 could out pull it at this point.
Here are the fuel numbers
Attached is some OBD live data
First few are some screen shots. The one with the date is the most recent.
Here is a link to the EGR doing it thing last week while I drove around town.
Big drive south (AK to AZ) supposed to start tomorrow night. But I don't want it to brake down in the middle of nowhere.
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