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Old 06-29-2005, 09:05 PM   #1 (permalink)
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DTC's!!!

I have a 2000 silverado and the CEL just turned on. I scanned it and got a code po753. I dont have 1st gear or 4th, but 2nd and 3rd seem to work. Please help guys. thanks
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88 4runner SAS, 40in iroks, longfields, 5.29's locked, dual cases, 4.7's in rear case, hydro assist.
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Old 06-29-2005, 10:33 PM   #2 (permalink)
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pull the pan and ohm the 1-2 shift solenoid. that's what the code is for. this solenoid controls the 1-2 and 3-4 shift valves, which provide 1st and 4th gear. spec is 19-31 ohms. I bet it's shorted. Good luck. DB
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Old 06-29-2005, 10:36 PM   #3 (permalink)
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If all that stuff is ok, you might try an ign switch. They get resistance internally and set codes. This one will default to 2nd if it fails. DB
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Old 06-30-2005, 08:37 PM   #4 (permalink)
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It was the shift solenoid and the trans wiring harness... Fewh... I thought it was going to be worse
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