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Diagnostic Aids

Code will set when an unknown gear ratio is detected for any gear but 4th. Check all connections, especially those at transmission pass-thru connector. Compare scan tool gear ratio reading to specifications in GEAR RATIO table.

GEAR RATIO

Gear Less Than More Than
1st 2.38 2.63
2nd 1.43 1.58
3rd .95 1.05
Reverse 1.97 2.17
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