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Re: 02 grand am 4t40?45 line press drop
Posted to Transmission Forum on 8/12/2015 4 Replies

line pressure (on gauge) using scanner looks about the same as the chart , as soon as the vehicle reaches about 10 or 15 KPH the pressure drops to idle ...about 60 lbs ... even in reverse ... manual 3rd seems ok and pressure stays up ... Login to read more.

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