Re: ALDL Fault Codes
A conversation is certainly less expensive and a 'non-destructive' start I'd think. The harness sounds as if it was a somewhat 'generic' fabrication. Much might depend on the ECM pinning that's actually populated in the harness. A 90 doesn't have C18 or C22 populated so if the fabricator uses a very basic approach I'd think Marc could get you squared away with a 'solution'. The solution might or might NOT be PROM mod.
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