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GM Fuel Trim Cells - How many are there and how do they reset?
Posted to Technical Discussion Forum on 12/17/2002 4 Replies

Greetings all,

After repairing a 1997 Sonoma 2.2L yesterday, some of the data retrieved comes under question. This vehicle had a complaint of low power and a MIL. Multiple codes were retrieved and were:

P0300 (Random cylinder misfire)

P0138 (O2 signal hi... Login to read more.

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