Whenever I shift into and out of reverse gear, there is a rather "harsh" engagement that makes the car "lurch" forward very slightly. Except for reverse gear, all (4) forward gears including "park" shift smoothly.

Would a bad reverse "boost-valve" be causing this problem? If so, do I need any "specialized" tools to R&R the front oil pump assembly in the trans to access the valve?

Thanks.

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1989 Firebird GTA: black on black 5.7 liter (N10 dual exhaust) with T-tops and leather.

 

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