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How does one Reset the ecm computer on 1991 to 1995 Chevrolet truck?
Wiki User
∙ 15y ago
Make sure the ing. key is off, then remove neg. battery cable for 10 minutes. reinstall cable then start engine. check engine light should be off. If not then check 10amp. ecm fuses in fuse box. If they are good after checking them with test light and key on then there's a problem with the ecm. itself. Are bad ground wires on thermostat houseing stud.
Wiki User
∙ 15y ago
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Reset computer on 1991 to 1995 Chevrolet truck?
un hook the batt neg for 30 sec it will reset it up to 95 96 and up you have to have a scan tool to reset the ecm
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