Cadillac STS/STS-V: Transmission

19 messages, Last post on Mar 14, 2007 at 2:35 PM

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#16 of 19 '05 STS Cadillac Tranny Harsh Shifting by jsc7 Mar 06, 2007 (12:19 pm)
Have '05 STS with 25K mi - with harsh shifting - 5L40-E tranny smooth as silk until 21K mi shifting is now harsh in all shifts except 1-2 Any ideas ?
#17 of 19 Re: Gearing [lakerunner4h] by dmathews3 Mar 06, 2007 (2:02 pm)
Replying to: lakerunner4h (Dec 27, 2006 6:52 am) Unless all the cars weigh the same it is still hard to figure difference in mileage. The Intrigue I bet was a whole lot lighter than the Aurora. You are comparing apples to oranges. Replies to this message: lakerunner4h (Mar 14, 2007 2:35 pm)
#18 of 19 FIVE OR SIX SPEED SWAP INTO '95 STS by cabocurt Mar 14, 2007 (2:06 pm)
DOES ANYONE KNOW IF I CAN PUT A LATE MODEL 5 SPEED AUTO OR POSSIBLY THE NEW 6 SPEED AUTO IN PLACE OF MY CURRENT 4T80E IN MY 95 SEVILLE STS??. THE FINAL DRIVE IS CURRENTLY 3:73. I KNOW I CAN CHANGE TO THE SLS'S 3:11 AND WOULD LIKE TO KEEP THE SAME INITIAL OFF LINE PERFORMANCE WHILE GETTING THE EASIER RPM AT CRUISE.
#19 of 19 Re: Gearing [dmathews3] by lakerunner4h Mar 14, 2007 (2:35 pm)
Replying to: dmathews3 (Mar 06, 2007 2:02 pm) My '96 Riveria weighed about 700 lbs. more than my '98 Intrigue. Fuel mileage is virtually equal. The Aurora did weigh about 400 lbs. more than the Intrigue, and the LeSabre weighed virtually the same as the Aurora - and delivered 10 - 15% better fuel mileage.