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GMC
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2006
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Sierra 1500 HD, RWD
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Repair and Diagnosis
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Different variant/trim
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Section 16 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Service, Diagnosis & Troubleshooting)
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No Third Gear
No Third Gear
WARNING:
This page is about a different variant/trim than selected.
No 3rd
Checks
Causes
Orificed Cup Plug (698)
Missing or blown out