Dealerships
#1
Dealerships
Can a ECM be tested before buying a new one. I have my car at a dealership and they are telling me they think this is the problem but if they install a new one and program it they can't take it back if that doesn't fix the problem.
#2
no, an ecm or any other computer module cannot be tested. gm diagnostics are set up to rule out the wiring and controlled component/everything else. If they test ok and the fault is still there, the module is replaced. Its a process of elimination.
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snowjay
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November 16th, 2009 1:55 PM