want shift out of first gear

1997 CHEVROLET LUMINA
196,000 MILES • 3.1L • V6 • FWD • AUTOMATIC
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JOE1953
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  • 772 POSTS
when taking of in the car the transmission want shift out of first gear the fluid and filter been change what could be the cause and how do I check the modulator valve?
Nov 7, 2014 at 10:53 AM
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HMAC300
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  • 48,601 POSTS
it doesn't' have a modulator valve, have it scanned for a bad speed sensor or the governor may be stuck or a valve body problem.
Nov 7, 2014 at 12:51 PM