Question about 1999 Oldsmobile Silhouette
The transmission model in your vehicle is the 4T65E.First,i would scan for diagnostic trouble codes,as the problem could also be the engine misfiring.GM has integrated into the vehicle's computer system the ability to connect a scan tool,and of course record diagnostic trouble codes,but to also look in the data stream real time and monitor each individual cylinder for misfires.The problem should be thoroughly diagnosed and located and isolated exactly before attempting repairs so that money will not be wasted.Also on a good quality scan tool,the transmission can be manipulated to a certain degree,to override the vehicle computer,and also to verify or not,if the trans has a problem internally,or a possible command problem from the computer.The scan tool allows gears to be commanded manually through the scan tool,and line pressure and TCC operation can also be tested.So i would do a much more thorough diagnosis before attempting repairs.
Posted on Aug 22, 2008
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