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2005 GMC Envoy SLE Questions & Answers
Can you tell me what
Firing order is 1, 5, 3, 6, 2, 4. Number 1 cylinder is up front. Why would you need the firing order, this engine does not have plug wires, each plug has its own coil pack, each coil pack is controlled by the computer.
Location of the secondary air pump relay on 2008 GMC Envoy
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