Engine Clatter

[mgm13]

Anyone out there had a positive experience with a dealer's service department in regards to this horrible cold start engine noise?

 

Sounds like a DuraMax for about 45seconds after startup and goes away till the next cold start-I am talking Texas cold 75plus so it is not ambient temp related.

 

Dealer says its a

normal characteristic of the engine and refuses to do anything. Truck started doing the clatter routine at 18,000miles now at 30,000 and still sounding off.

 

Makes you wonder why any of us could be anxious to spend $40grand for a new SS?

 

mgm13msn.com

[99Xtreme]

I read on on a pickuptruck.com forum that to get rid of the clatter on the 5.3's the dealers were replacing the pistons on them and that fixed the issue.Another one said withe 6.0 clatter that now GM will either give you a whole motor[supposedly some redesigned 2003 version],or a 100,000 mile warranty on the existing engine,and if it would let go they would replace it with a rebuilt motor under that warranty.

[99Xtreme]

Heres that forum

 

http://forums.pickuptruck.com/showflat.php...sb=5&o=&fpart=1

[cadowns]

Here is the TSB information that GM is using to fix these problems.

 

http://www.expage.com/gmtsbs

 

My cousin had a 5.3 replaced under this plan.

[tony]

the noise in the in these engines comes down

to one thing-better fuel economy-my 5.3 achieves

up to 20 mpg-this is because of the piston/

cylinder wall design. allows extreme carbon

build up over time. and if you think about

say you get a new engine-what makes you

think that the new engine is not going to

create this same knocking noise-i do agree

that a 30k truck should not clatter on start up.

but as long as the noise goes away with in

60 sec. i can live with it. it is still a heck

of a truck. and furd and dog will never be

as good.

[tony]

one more thing just to let you know

gm does make something to prevent the

cold start engine noise-it sells for around

$30 per oil change. it is called mobil 1.

yes it is expensive every three thousand miles

but it really depends how much it is worth

to you to reduce or eliminate engine clatter.

and i am not going to say that this is a cure

for a 100,000 mi truck-but if from your first

oil change you use mobil 1. i would put $ on

it that your truck never develops this condition-

at least for the first 100,000 mi. who knows

i could be wrong. but i dont think i am

[RyanbabZ71]

one more thing just to let you know

gm does make something to prevent the

cold start engine noise-it sells for around

$30 per oil change. it is called mobil 1.

yes it is expensive every three thousand miles

but it really depends how much it is worth

to you to reduce or eliminate engine clatter.

and i am not going to say that this is a cure

for a 100,000 mi truck-but if from your first

oil change you use mobil 1. i would put $ on

it that your truck never develops this condition-

at least for the first 100,000 mi. who knows

i could be wrong. but i dont think i am  

 

 

I have been using mobil 1 since 9K miles. It doesnt help with the engine knock.

 

I now have 32K miles. Am i worried about the knock? Not really. Why? How many engine failures or problems (other than a noise) have you heard of? Until then i will have piece of mind (along with my 100K mile engine warranty )