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Section 39 (Automatic Transmission (Troubleshooting) - 4L60-E/4L65-E)
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Troubleshooting
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Second/Third Gear Only or First/Fourth Gears Only
Second/Third Gear Only or First/Fourth Gears Only
WARNING:
This page is about a different car, the 2004 GMC Safari and 2004 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
Second/Third Gears Only or First/Fourth Gears Only
Checks
Causes
1-2 Shift Solenoid Valve (367A)
Sediment is in the valves
The electrical connection is faulty
Damaged seal