Five0786
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- Joined
- Jun 27, 2013
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I'm having problems with my '92 Silverado. My torque converter will not stay locked up after the truck warms up. I've had it rebuilt due to the amount of mileage on it but after a new ecm, brake switch and prom it still refuses to work. The problem existed before the rebuild and now it will lock up until I've driven it 10-15 miles. After that it stays unlocked until it sits over night. The trans shop has narrowed it down to the ecm sending a power signal instead of a ground. Any ideas on what might be causing this?