Cadillac Repair: 1994 Cadillac SLS Northstar Engine, tcc solenoid, cadillac sls

Question
How do I reset the codes for Check Trans Fluid, Check Coolant Level, and Change oil when all work has been done...And I also have a problem with a shuttering feeling when the odometer reaches 40-45 MPH especially when it is in OD... The transmission has been replaced and the computer has been replaced... All plugs and wires are new. The coils are alright.. could that be the control module under the coils?

Answer
On the trans shutter it could be a fault in the TCC solenoid on the valve body for the overdrive and or a fault with the torque converter.

Check trans fluid = Turn ignition ON, Engine OFF. Press and hold the OFF and REAR DEFROST buttons until TRANS FLUID RESET appears in the information center. May have to hold buttons in for 5 to 20 seconds.

Change oil = After the oil has been changed, Keep pressing the INFORMATION button several times until OIL LIFE INDEX APPEARS. Press and hold the RESET button until the display shows 100%.

Check coolant level = At the bottom of the overflow (surge tank) jug there is a sensor. Make sure that the overflow jug is at the full mark and replace switch if necessary.

Check computer for codes and CLEAR all the FAULT CODES if there are any.