06 Tahoe 5.3L with NVG 246
Symptoms: In 2HI with no load (e.g. traveling downhill) it seems the transfer case drops to neutral. Transmission is still in drive and no torque is being delivered to the rear wheels. Just 'revs' the engine. Light on the switch still shows 2HI.
I remedy the situation by switching to A4WD. It switches fine and also functions properly (auto engages the front when the rear slips). I can also switch to 4HI which functions properly as well.
I can then switch back to 2HI from either A4WD or 4HI and it will engage and function properly until I travel downhill and not apply any acceleration.
No service lights or codes.
I replaced the 4WD selector switch module in the dash. Still have the same problems. Next on my list is the encoder/motor. Seem about right? Or is there something else that might be the issue?
Symptoms: In 2HI with no load (e.g. traveling downhill) it seems the transfer case drops to neutral. Transmission is still in drive and no torque is being delivered to the rear wheels. Just 'revs' the engine. Light on the switch still shows 2HI.
I remedy the situation by switching to A4WD. It switches fine and also functions properly (auto engages the front when the rear slips). I can also switch to 4HI which functions properly as well.
I can then switch back to 2HI from either A4WD or 4HI and it will engage and function properly until I travel downhill and not apply any acceleration.
No service lights or codes.
I replaced the 4WD selector switch module in the dash. Still have the same problems. Next on my list is the encoder/motor. Seem about right? Or is there something else that might be the issue?