Question about 1994 Chevrolet Silverado 2500
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Posted on Jan 02, 2017
SOURCE: 1993 GMC 1500 4x4 poor shifting
this may be due to a poor connection at the vehicle speed sensor on the transmission, pull the connector off the sensor and clean it with contact cleaner, if the problem persists replace the speed sensor. there are 2 diff ones here is a picture of the most common one for an auto trans.
Posted on Mar 26, 2009
Well where to start. First of all you listed that the transmission won't shift from 1st to 2nd gear. This could be any number of things from internal oil leaks, bad sensors, valves, clutches and so on and so on. The problem is there is no way of telling you this is the problem or that is the problem with out performing tests such as taking pressure readings, stall tests and so on. Then we get to your description, having gears slam can also be caused by all the items listed above with the first issue. Losing all gears completely (I assume drive, overdrive, reverse, etc.) leads me to believe you have a major internal leak (assuming there isn't oil pouring onto the ground), a issue with the transmission pump or torque converter. Again there isn't anything you can do without taking pressure readings. And even with those readings you won't really know what your looking for without a complete understanding of how a automatic transmission works. Sorry I couldn't give you a straight forward easy answer. I would recommend taking your truck (assuming it will drive) to a shop that specializes in transmissions. I recommend a transmission shop because to me dealership labor rates are to high, and secondly I wouldn't take it to a general independent shop because you don't know if it will be an experienced transmission technician working on it or a "grease monkey" who will sell you things it dosen't need because he's just guessing what wrong with it.
Posted on Mar 26, 2009
If the lever is moving very easy and doesn't have the normal clicking feel, then most likely, part of the linkage has become disconnected. It will all be on the drivers side, so crawl under the truck and have someone shift the linkage with the truck OFF and you should spot the fault. If all seems normal and you see the lever moving on the transmission, then either the trans is bad, or simply too low on fluid to operate OR has a completely plugged filter...
If your problem is that you can't move the shift lever, some require that you put your foot on the brake before the shift lever is unlocked. It is either cable or electrically locked. If that is the case, you can bypass the lockout by removing the steering column cover and pu;;ing the cable or solenoid. I don't remember the exact procedure, but as I recall, it is relatively simple to do.
Posted on Jul 05, 2010
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