Anyone ever blown a headgasket? 03 GMC smoking coolant

**Jay Carnes** · 10-23-2008, 07:26 PM

Just had a 03 GMC Duramax come into the shop, was running fine then started smoking - stinks like antifreeze & you can see the bubbles come into the coolant res. Had someone tell me it could be injector seals? Just never heard of a headgasket on a Dmax.

Truck only has 90k miles, called in the VIN & it was covered. Brought it to a GMC dealer - they called me the next day & said they would not warranty it because it had a pyro at one time (pass manifold had a blocked tap).

any info would be great.

**BigRedChevy** · 10-23-2008, 07:32 PM

My truck is in the shop now with two HGs and a Radiator leaking. Although mine isan't bubbling in the tank.

Low Coolant

**Jay Carnes** · 10-23-2008, 07:55 PM

with all the mods you have - do you have a pyro in the manifold? Or did they just warranty it anyway?

I figured that would be a warranty cake walk & anydealer would love the job. lazy bastards!

**BigRedChevy** · 10-23-2008, 08:15 PM

Yes i have the BD manifold with the pyro in it and warranty is covering it.

**Jay Carnes** · 10-24-2008, 07:20 PM

Quote:

Originally Posted by BigRedChevy

Yes i have the BD manifold with the pyro in it and warranty is covering it.

The service guy was just being a dick I think - who wouldn't want a motor job on GM's dime? Service guy even told me how slow they were. Friggin idiot, I have it at another dealer right now - they were pumped to have a big job come in under warranty.

**BigRedChevy** · 10-24-2008, 08:47 PM

Yeah, the dealer mine is at is pretty slow right now. I would say that is why they didn't fuss too much. They new if i was paying for it that it would go to a different shop.

mad dog · 10-26-2008, 12:36 PM

I have a 02 dmax and it recently started smoking when idleing doesnt use oil and smells alot like raw fuel anyone have any ideas? Bad injector, headgasket.

mad dog

**BigRedChevy** · 10-26-2008, 06:58 PM

That would be your injectors. Take it to the dealer ASAP. there is a extended warranty for 7 years 200000 miles on the LB7 injectors for that very reason.

jaydawg · 10-26-2008, 07:04 PM

Mad Dog...what state r u in????

mad dog · 10-27-2008, 11:16 AM

Thanks for the info on the injectors I will get it to the shop as soon as I can.

I am from the great state of IA the only bad thing is we dont have to many diesel event close to here right now.

I am a new member as of yesterday and I think im gonna like it here.

Mad Dog