Can somebody give me a step by step, idiot's guideish, procedure to change the transmission fluid and filter in my truck? (I know how to work on mechanical things, just not cars and I know there are some odd procedures like putting the parking brake on and putting the automatic shifter in a certain position before I can take off the pan.) By the way the truck is a 4x4 and has an automatic transmission.
Also, is it normal for the tachometer to raise up to 2.25 while accelerating to 25mph and then dropping back down to 1.5 when the gearing catches up to the engine.I have two questions about the transmission in my 98 Chevy blazer.?
There are no real tricks to this. Put it in Park %26amp; block the wheels. You may not even need to jack up the truck. If you do, place jack stands of a suitable weight rating under the frame to hold it up. You don;t want to trust the jack to maintain it's pressure holding up the vehicle.
Your tranny may have a drain plug. Verify by looking at a shop manual (at the library if you don't have one). Drain the fluid while the motor is still warm. Then, remove the bolts around the perimeter of the tranny pan. Be prepared for a bit more fluid to run out.
The filter is right there, and usually is held in with just a washered bolt or two. Some just rest inside without any fastener. Swap the filter. Install a new pan gasket. Bolt it up. Refill.
Keep in mind, this only gets about 1/4 of the fluid out of the entire system. For example, many drain and fills require 4-5 qts of fluid, but there is another 10 qts hiding in the torque converter. If you have alot of miles, please consider a complete flush by a local shop. It's not cheap, but you can find a full transmission service for $125 or so if you shop around.
