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Re: 2002 Suburban 5.3 'Z' engine, P0171, P0174
Posted to Technical Discussion Forum on 12/18/2008 12 Replies

Donald see Bull # 05-06-04-029A. Doc#1676954 in GM [...] Have a big vac. leak probably in intake manifold.

Some intake plenums warp.

Mike Login to read more.

12 Replies Received (View Replies)