I started noticing a rattle noise every now and then on my engine of the SS/SC about a month ago. Every time I let one of the guys here at work listen it wouldn't do it . It finally done it with them around. They called GM and they said there is a TSB on what has happened to my car.

We asked what's the number and we will look at it. The rep said that it is not available to the public. It's only available on a call in basis. So I thought I would make it available to the peeps here

Lucky me has to have the front of his engine torn apart for a better timing set.


AIP3252

MODELS:
206-2007 CHEVROLET COBALT, COBALT SS
2006-2007 CHEVROLET HHR
2006-2007 CHEVROLET MALIBU
2007 PONTIAC G5
2006-2007 PONTIAC G6
2006 PONTIAC PURSUIT(CANADA ONLY)
2006-2007 PONTIAC SOLSTICE
2006-2007 SATURN ION REDLINE
2007 SATURN SKY

BUILT BETWEEN 4/1/06 - 11/1/06
WITH ANY OF THE FOLLOWING ENGINES
2.0 ENGINE (VIN P - RPO LSJ)
2.2 ENGINE (VIN D OR F - RPO L61)
2.4 ENGINE (VIN B OR P - RPO LE5)

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

CONDITION/CONCERN:

On rare occasions, a tick or rattle noise may be heard from behind the front cover of the engine and/or pieces of a timing chain roller may be found during an oil change. This may be the result of a timing chain concern.

Non-heat treated timing chain rollers were randomly installed in the assembly line hoppers. He advised that this happened sometime between 4/1/06 - 11/1/06 so it can randomly affect late 2006 - early 2007 models.

RECOMMENDATION/INSTRUCTIONS:

If this concern is experienced, inspect the timing chain for missing or damaged timing chain rollers. If a missing or damaged timing chain roller is found, replace the timing chain and gears using the part numbers currently listed in the parts catalog.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

 

Damn... that's scary...

 

Yup. My baby is getting torn down prob today.

 

Good thing replacing these isn't that hard. Just a pain in the ass.

 

So this is different than the rattle of the supercharger after its been broken in? Because I hear a rattling noise coming from the engine once in a while, but have noticed no metal flakes in my oil.

 

chain rollers... those little bastard pins lol

 

hrmmm, I've had a noise something like this before, like for me it would happen when i stop at a light and idle for a min i would hear it then sorta rev it up and it would go away. Same sound and situation?

 

Well, mine is well before that time, so I'm ok

GM sucks with that kind of stuff. How do you use the wrong damn part at ramdom for 7 months??

 

haha thats kinda funny. i'm not even suprised after some of the stuff i've seen that came off the assembly line already broken

 

This Should Be A Sticky Rawr

 

Yikes. My car was built sept. 06. Hope I don't get this problem.

 

is it like a rattle that kinda goes away when your on the throttle or moving? i hear this noice once and a while when iv been driving for a while, people say its my valves ticking but its way to loud and always happens. i wanted to take it in but if crossed that 40xxx mark so my warantee is gone
almost sounds like somethings loose up on my front left of the engine

 

I alredy had my chain tensioner put brand new.

 

That's exactly what was happening with mine. I would hear a noise, not all the time, coming from the engine compartment. It don't do it all the time. It's only when the engine is at operating temp and at an idle. You rev it up to past 2500 rpm's or so, then it goes away.

My build date was Sept 14, 2006. You might have the same issue later on.

 

we should get a sticky to a TSB section on this forum somewhere...


i think it would be a useful/good idea.

 

not sure when mine was built i think well before april 1st though, i bought it april 24th

 

wow i wonder if thats whats wrong with mine because i had the tensionor pulley replaced and its still doing it...... not as much especially since i have put the ingalls on but its still there....

 

I agree. This would be a very useful sticky indeed. Any types of recalls, or TSBs should be sticky!

 

Well WTF, my car was bought in May of 05 and I have that EXACT PROBLEM!!! In every way you describe it. Comes and goes. Goes away if you move or rev, only knocks at idle. Been happenging for awhile now, but I wonder if they won't check that TSB for me, since I'm not within the build dates specified?

 

The only way to check that TSB is for them to call GM themselves. GM is not goin to put that one on the site to be seen. It's only on a call-in basis.

Some of yall that might have this problem, just put your last 8 of your VIN on here and I should be able to tell the build date for ya to see if it falls within the dates specified.

 

I think i have the same problem on my LS, it comes in at low RPM on acceleration but goes away at about 2500

 

thanks for this guys, they just finished redoing my head and this sound is comming back which baffles them,this explains alot.

 

yw. It might be a problem for a lot of people. There's a big range they used the wrong timing set on.

 

How do you find out???

 

Give me your last 8 of your VIN and I can tell ya