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1991 GMC Suburban 2500 Question: transmission won't go past third gear

 

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dwallyt, 6.2L V8 Diesel, Waynesboro, VA, December 22, 2010, 05:10
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transmission shifts through first, second & into third then stays in third. i am wondering if this could be related to towing. i have owned this vehicle for 170,000 out of it's 230,000 miles & only just recently towed a 2500 lb trailer of firewood. now suddenly i have a blown head gasket & transmission that won't go past third.

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  • Answer #1

    Visitor, February 19, 2011, 12:32

    get a new one and make sure its the high performence

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