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H2 4D Utility Wagon
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Section 154 (Automatic Transmission - 4L80-E/4L85-E - Service, Diagnosis & Troubleshooting)
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Harsh Shift 4 to 3
Harsh Shift 4 to 3
WARNING:
This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
Harsh Shift 4 to 3
Checks
Cause
Retainer Ring (533)
Not seated
Spring Assembly (532)
Not acting
Bolt (26)
The oil feed hole is plugged.
Cup Plug (530)
Plugged
Direct Lube Exhaust
Blocked