2009 CTS AWD Vibration issue from trans/driveshaft
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2009 CTS AWD Vibration issue from trans/driveshaft
I know this isn't a CTS-V, but I do own a Trans Am Ls1 and was hoping good ole LS1tech could give me some advice on a transmission issue I'm having on the daily driver.
What occurs is, when I accelerate in 1st gear, around 2k rpms the drive shaft/transmission, directly underneath the armrest, begins to vibrate and shutter loudly. It is very obnoxious and has grown much worse over the past month. I'm stumped as to what it is, and can't get a good view with the exhaust right there.
I did just tighten an allen-head bolt underneath around the driveshaft-transfer case joint area.
My ideas….
-Something is loose with the trans/driveshaft/transfer case
-Something out of balance.
Thank you in advance!
What occurs is, when I accelerate in 1st gear, around 2k rpms the drive shaft/transmission, directly underneath the armrest, begins to vibrate and shutter loudly. It is very obnoxious and has grown much worse over the past month. I'm stumped as to what it is, and can't get a good view with the exhaust right there.
I did just tighten an allen-head bolt underneath around the driveshaft-transfer case joint area.
My ideas….
-Something is loose with the trans/driveshaft/transfer case
-Something out of balance.
Thank you in advance!
#3
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it occurs in any gear now, although it used to be only 1, 2 and 3. I'm almost 100% certain it is the driveshaft, since when I accelerate from zero now, I hear a scrape-scrape-scrape then it evolves into a thud thud thud up to 2k and then after 2k it stops. I checked other sources and I guess this is the issue with the driveshaft in some bolts and a CV joint.