Thursday, June 21, 2012

2002 Chevrolet Avalanche Z71: Gear shift Issue?

Gears not shifting from 2nd to 3rd.It will stay on 2nd.On 3rd gear it feels like engine  revs in neutral mode.

Clear Transmission failure issue.

It sounds like an internal mechanical transmission issue.
In this case ...........
First check the basic things like transmission fluid level and its condition.
The tranny Fluid should be pink to red in color and does not have any burnt smell. If it has burnt then replace the transmission fluid.
It is also a good idea to check it for trouble codes just in case it is a sensor or solenoid issue. If nothing is found, then it should be removed and disassembled for further diagnosis.

It is very unlikely that the problem is cause by a faulty solenoid and it does not set a trouble code.
It sounds more like a mechanical problem such : sticky valve, internal pressure drop causing by faulty seal or worn out clutch pack etc.

This details will help.

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