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2007 - Chevrolet Avalanche - 5.3L Vortec - U.S.A.
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TOPIC: 2007 - Chevrolet Avalanche - 5.3L Vortec - U.S.A.

2007 - Chevrolet Avalanche - 5.3L Vortec - U.S.A. 01 Jun 2012 18:01 #1

  • TacomaKarl
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2007 Chevrolet Avalanche XLT, 53,000miles, with the 5.3L v8 Vortec/Flex.

Original mpg, best highway was 18mpg
Post groove mpg, best hoghway was 23mpg.

Karl Fortner
Tacoma, Wa.

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