Question about Chevrolet Avalanche

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Driving on highway, droped out of O/D and stayed in 3rd. drove aprox 10 mi. and got off highway then would only shift to2nd and top out about 35mph tnen rpms rould climb?

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First of all I assume this is an automatic with O.D. First check the transmission fluid level. If this has dropped to low, the transmission will not engage the higher gears. If this is not low, pull the transmission pan and replace or have replaced the trans filter. At this point, with the transmission pan pulled you should inspect the gears and clutches for damage. The pan will show sign of metal flakes, if not chunks of the gears or clutches in the bottom. This would be best handled by a professional and not be too costly. If this is the case then your problem is much bigger and will be much more costly. I hope this helps.

Posted on May 23, 2011

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