Sierra 1500 2WD V8-5.3L VIN B HO (2006)
7. Install the exhaust muffler nuts.
Tighten
Tighten the nuts to 40 Nm (30 lb ft).
8. Connect the oxygen sensor electrical connectors (1, 2).
9. Connect the CPA retainers.
10. Clip the oxygen sensors electrical connectors to the following:
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Hose clip
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Transmission crossmember