Question about 1993 Chevrolet K1500
The transmission was a little sluggish in first gear before shifting into 2nd, 3rd, and OD. Once it shifted into 2nd, it was fine. (this was'nt an all the time problem) so I just did'nt pay to much attention to it. Yesterday, it would not shift out of 1st gear manually or auto. It obviously revs high, but when you would expect the shift into 2nd it surges and studders, but won't shift. Truck has a 305 w/4l60e.
Is the trans fluid low or dirty(brown coloerd and has gunk in it?) take a white paper towel pull the stick out and look at the trans fluid on the towel..is there evidence of blackened stuff and aluminum shavings and stuff in it?..time for a fluid and filter change(this is always cheaper that total overhaul/replacement) good luck repost findings please..thnx
Posted on Jan 19, 2013
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Posted on Jan 02, 2017
The EMC detected and problem so it's in limp mode, As long as it's in limp mode the 4th and OD will not activate. Take care not to burn up the transmission by running it hard while your in the limp mode.
Your going to have to get the truck scanned to clear any codes and why there are DTC codes. Auto Zone scan for free and most auto shops charge $10.00 to $20.00 to scan sine they want the business.
If you want to clear the codes your self you can put the ignition to the run position and pull the ECM (Batt) fuse out for 20 sec and place it back in then start the truck. It may stall but let it, just start it again and this would have cleared all the DTC code history.
The transmission should be running fine unless there is a problem and the service engine light will be on again and you'll be in limp mode still with an updated DTC in the ECM.
Good luck and hope this helps.
Posted on May 26, 2009
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