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The issue has been determined to be a faulty ECM. The case had corroded severely and the corrosion overran the gel and got into the circuitry and caused the issue. A replacement ECM solved the issue. Thank for the help!!
The issue has been determined to be a faulty ECM. The case had corroded severely and the corrosion overran the gel and got into the circuitry and caused the issue. A replacement ECM solved the issue. Thank for the help!!
Well i dont really know alot about electronics beyond what i have done. So i dont know how to determine what type of network bus circut i have. im not sure what you mean by fsm field service manual?
Thanks for the tip Eric. i have gone so far as to remove All the fuses and test them with a digital multimeter. they all test good. all the fuses related to the dash and instrumentation have power with key on. With the ALDL. not communicating with my scanner with key on( will recognize the BCM with key OFF) i feel it could be a wiring/serial bus issue but my knowledge stops there. ive located the violet and white wire twisted pair that according to the wiring diagram is the serial bus responsible for instrumentation and the aldl. i tested the wires with all ends unhooked from computer bcm and the bulkhead connector and the resistance seems normal. .001 ohm same as if i touch my leads together. replaced the bcm as previous owner stated his mechanics diagnosis was and problem remains. What is my next step in diagnosing this?
Id guess the shoes are just rusted to the drum. if you can get to it just strike the drum with a hammer. not too hard tho you dont want to deform it or crack it. This almost always works. if you cant get to it a piece of pipe thru the rim and hitting the pipe with a hammer works too. Make sure its in gear so it dont roll away when that brake frees up. Be carefull