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Hit the gas and there was a loud pop and smoke come from under the 2000 blazer 4×4 amd i lost drive and gear 3 but 1 2 and reverse still work… Dropped tranny pan and it was clean as as can be…. Transmission fluid wasnt burnt and was still red only debree in pan was on the magnet just normal wear and tear sludge but none on pan itself… Any ideas what it could be?
Need a replacement transmission? Quality transmissions are hard to find. Free estimate to your email.From what you have told me, it seems like you have a problem in one of the solenoids that controls the gear choice. You see most four- or five-speed transmissions use two solenoids and electronics to determine the proper gear. A solenoid can certainly emit smoke when it fails explosively under stress and that could easily have been the cause of the pop and smoke.
To my thinking, then, your transmission is likely overall in decent shape, however, there’s a problem throwing it into limp-home mode. The problem is in the solenoid pack in the valve body.
My advice is to take your SUV into a shop where they can open things up and look inside. Unfortunately, you do have to crack the case to get to at least one of the solenoids. There is one inside the valve body and one external on the valve body itself. More than likely, you are looking at replacing one or both of the solenoids to restore your transmission. You are looking at a cost of about $500 to replace the pair.
One other suggestion is this have the technician do a complete diagnostic with an OBD-II scanner. It should turn up any other problems that may be lurking in the tranny.
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Fair Remanufactured Transmission Price Ranges by Transmission Model Updated May 1, 2018
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