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common issues with the 5.3L engine?

common issues with the 5.3L engine?

Postby jamoka3 [OP] » Dec 18 2011, 5:39am

I stumbled on the Castech cracked head issues that effect the 5.3L, how common is this issue and is there a tell tail sign to determine if you have this issue?
Is there a way to check the engine in the truck, Im going to look at a 05 with 85k miles at a dealer, and I want to check if this is a problem or not?
Its kinda a big deal before i buy this truck...
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Re: common issues with the 5.3L engine?

Postby adams99z71 » Dec 18 2011, 6:13am

ive never heard of anyone one here having cracked heads. very reliable engine, quite a few guys here are members of the 300,000mile club.
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Re: common issues with the 5.3L engine?

Postby jamoka3 [OP] » Dec 18 2011, 6:24am

I found this on this forum. I was curious how common the problem was?

coolant disapears!!
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Re: common issues with the 5.3L engine?

Postby EKinMN » Dec 18 2011, 4:18pm

Well if it's any indication, it has not been discussed very often around here. based in that, I do not think it is common at all.
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Re: common issues with the 5.3L engine?

Postby jleach76 » Dec 18 2011, 4:37pm

I just traded in my 2007 Suburban with the 5.3l in it and it had 136000 mile on it. No problem with that motor. I like it so much that I bought a new 2011 Silverado 4x4 Crew cab!
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Re: common issues with the 5.3L engine?

Postby wheeler82 » Dec 18 2011, 4:58pm

erics right, im sure theres a few bad eggs out there like every other vehicle but these are EXTREMLLY reliable engines, my dads 02 has 260,000 on it! Just normal maintence and dosn't beat the hell out of it and she keeps going!
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Re: common issues with the 5.3L engine?

Postby GUNNOE20 » Feb 27 2015, 4:09am

I agree about reliability of the engine. I have a 2001 1500 Sierra with 332000... the body is shot but the engine still runs ;)
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Re: common issues with the 5.3L engine?

Postby RIPPEDK20 » Feb 27 2015, 4:14am

I have the cracked castech heads and the disappearing coolant issue.. but it is not very often. I have 150k on the ticker and this engine is as strong as ever. I maintain it rigorously and put the best of the best into it. And it repays me two fold. Just because tou have the issue doesnt mean you condemn the engine.
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Re: common issues with the 5.3L engine?

Postby Neal » Feb 27 2015, 6:48am

Had a 2006 5.3 with the Castech heads drivers side cracked at 85k miles. First thought it was a head casket talked to a buddy that runs a independent shop he told me to have the heads checked for a crack. Sure enough drivers side cracked. He said he had seen several. Go to GM-Trucks.com do a search in the 99-13 section several threads about them there. This happened 5 or 6 years ago. I just put some new heads on it later sold it to my nephew still running today probably got 150k on it now.
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Re: common issues with the 5.3L engine?

Postby RIPPEDK20 » Feb 27 2015, 2:00pm

GM is well aware of the problem and didnt thibk it was bad enouhlgh to fix it for anyone.. its just a TSB. So the consumer gets screwed like always. Thanks GM
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