Problem with up shifting

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This topic contains 0 replies, has 1 voice, and was last updated by Luis Montijo Luis Montijo 2 years, 12 months ago.

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    Luis Montijo
    Luis Montijo

    1998 suburban with a 5.7 having trouble shifting up, it just revs up but never shifts, backfires occurring often when revving up too, engine will also stop running unexpectedly from time to time. If anyone knows what could be the most likely cause I’d really appreciate the help.

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