a SECRET TSB I thought everyone should know about
#76
Senior Member
Thanks for the info fr33k.
Looks like my car falls within those dates. With the cams, I'd figure I would have already shattered the timing chain if it was a non heat-treated one. I'll keep an eye out, though. Thanks for the heads up!!!
Looks like my car falls within those dates. With the cams, I'd figure I would have already shattered the timing chain if it was a non heat-treated one. I'll keep an eye out, though. Thanks for the heads up!!!
#80
So I posted a video of this rattle, the video is backwards but you can hear it nice and loud.
http://www.youtube.com/watch?v=8FSf0-dTFLI
http://www.youtube.com/watch?v=8FSf0-dTFLI
Last edited by mrfitz; 11-04-2009 at 06:22 PM. Reason: Automerged Doublepost
#81
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Join Date: 09-11-09
Location: Madison, WV
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Mine does this too. I also just lost 5th gear due to a bent fork because apparently the fellow that owned it before me was a fat man and drove with his weight on the shifter cruising in 5th (bad habit) and now I have the transmission out. I figured while I have the tranny out I'll go ahead and crack open the engine and fix this. Does anyone have the part number for a replacement heat treated timing tensioner? Or maybe a website or parts outlet with aftermarket options? Sure would save time trying to talk to a moron on the phone at GM trying to track the part down.
I also think I have either a bad SC bearing going out or a weak accessory belt tensioner as I also have a on again off again squeaking noise coming from the engine bay. Kind of a chirp/squeak noise that's audible about 75% of the time at all operating conditions. That'll be a little harder to pinpoint but I'll probably start with some soap on the belt and if it goes away then I'll know it's not the SC bearings.
I also think I have either a bad SC bearing going out or a weak accessory belt tensioner as I also have a on again off again squeaking noise coming from the engine bay. Kind of a chirp/squeak noise that's audible about 75% of the time at all operating conditions. That'll be a little harder to pinpoint but I'll probably start with some soap on the belt and if it goes away then I'll know it's not the SC bearings.
#82
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So I posted a video of this rattle, the video is backwards but you can hear it nice and loud.
http://www.youtube.com/watch?v=8FSf0-dTFLI
http://www.youtube.com/watch?v=8FSf0-dTFLI
#87
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Join Date: 06-21-08
Location: San Diego, CA
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I for sure have the same problem then. My gmpp exhaust cat is all dented to **** and most likely leaking. Do I go to the dealer to have the timing chain/tensioner replaced? Warranty?
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