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2004 Chevrolet Avalanche 1500 5.3L 2-3 Shift
Posted to GM Transmission on 3/21/2012 8 Replies

Hi All IATN Members. This one has me going in circles. Customer states all of sudden will not shift in to 3rd.No Codes. Checked it out, 1-2 shift on time and smooth, Never shifts after that. No Flare. Just acts like 2 speed trans. Scan shows signal sent to 2-3...

Summary posted 3/26/2012

8 Replies Received (View Replies)

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car Vehicle Data

2004 Chevrolet Avalanche 1500

VIN 3GNEC12T54
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
Affected2-3 Shift
ConditionsInoperative
Misc.No Codes