Shifting problem with AWD - Chevy Traverse Forum: Chevrolet Traverse Forum
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post #1 of 5 (permalink) Old 04-11-2019, 07:06 PM Thread Starter
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Shifting problem with AWD

Periodically I will use the AWD transmission setting. I noticed that after not taking it out of AWD before parking the Traverse that the following morning when I started it the transmission was in 2WD. Two days ago I did the same and the next morning the car would go into 2WD but the transmission was stuck in neutral and would not shift into drive mode.

I kept the brakes on while my wife put a chock behind a rear wheel to keep the car from rolling backwards into a wall. I shut off the engine and restarted it and turned the dial to go into AWD and still no power to any of the wheels. Put it back into 2WD and still a problem. Finally after going from neutral to drive and park and back into drive the transmission finally shifted in drive mode and I could drive forward.

I have no idea as to the nature of the defect but I now plan to put the transmission into 2WD before shutting off the engine. I wanted to warn others that this can occur and not to trust the transmission controls 100%.
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post #2 of 5 (permalink) Old Yesterday, 07:39 AM
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Could be something in the software and logic controls that didn't like the starting sequence.


If I shut mine in AWD, and without touching the control knob restarting and shift into D it is still in AWD. Just a guess, but maybe if parked in AWD and then shifted to 2WD while still in P before shifting to D and moving the vehicle something will screw up.


The Silverado is quirky also.....if parked in AWD/4WD and the control knob is accidenrtly turned to 2WD with the engine off, it remains in AWD/4WD and won't shift to 2DW until the control knob is turned back to AWD/4WD shifted to D and then shifted to 2WD.

Current Chevys -'16 Silverado LT;'18 Malibu LT Redline;'18 Traverse Premier Redline<br /><br />Previous&nbsp; Chevys:16 Malibu LT2 '17 Impala;'16 MalibuLT;'15 Camaro LS;'15 Traverse; '13,'12 and '07 Avalanche LTs; '11 Tahoe LT; '13 &'11 Malibu LTs; '08 Trailblazer;'06 Colorado WT..... Chrysler era.....'80 Citation;'75 Impala;'72 Chevelle;'69 Camaro R/T;'65 Impala SS;'62 Nova
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post #3 of 5 (permalink) Old Yesterday, 01:23 PM Thread Starter
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I have a 4WD Chevy truck and one of the things I dislike about it is that it has a solenoid control knob to shift into 4WD and the idiots at GM place the knob so its tiny LED light is completely hidden from the driver by the shift lever. I have gotten in the habit of verifying it is in 2WD before driving out of my driveway.

With the Traverse I had used AWD one night and the next morning I was going to set it back to 2WD but when I started the engine the transmission had automatically reverted to 2WD. I thought that was a great feature. Then I had the experience of leaving the car in AWD one night and in the morning when I shifted it to 2WD and then into reverse to back down the driveway I found that having applied the brakes and needing to turn and go forward that the transmission would not shift into Drive but was in neutral.

For who knows what reason the solenoids to shift the transmission out of Reverse and then into neutral and then into Drive malfunctioned and the car was stuck in mid-point and the transmission was in neutral. This sort of glitch is why I believe that autonomous vehicles are going to result in more accidents and fatalities. It is like the Boeing 737 Max controls that work until they do not work.


GM may eventually produce a fix and send out a Service Bulletin but in the meantime I will not leave the vehicle in AWD but shift it into 2WD before shutting off the engine. I will also be a lot more careful on an incline to not rely on the car shifting into Drive but leave more room behind the vehicle should the transmission only get to the neutral position. On my driveway there was less than 3 feet of room for error which is why I had my wife place the wheel chock behind the rear tire until I could get the transmission to shift into Drive.

It may be the hill assist that interfered with the shifting from Reverse into Drive but no way for me to diagnose the problem and GM is notoriously bad at responding to problems. My 2011 truck was subject to a recall notice for the defective airbags but 4 years later GM has not provided the parts needed to replace the airbags and so I have the front passenger airbag activator turned off. It is also why when in the next 12 months when I replace the Chevy pickup it will be with a Toyota Tundra.
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post #4 of 5 (permalink) Old Yesterday, 04:19 PM
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Originally Posted by Montereyjack2$ View Post
Periodically I will use the AWD transmission setting. I noticed that after not taking it out of AWD before parking the Traverse that the following morning when I started it the transmission was in 2WD. Two days ago I did the same and the next morning the car would go into 2WD but the transmission was stuck in neutral and would not shift into drive mode.

I kept the brakes on while my wife put a chock behind a rear wheel to keep the car from rolling backwards into a wall. I shut off the engine and restarted it and turned the dial to go into AWD and still no power to any of the wheels. Put it back into 2WD and still a problem. Finally after going from neutral to drive and park and back into drive the transmission finally shifted in drive mode and I could drive forward.

I have no idea as to the nature of the defect but I now plan to put the transmission into 2WD before shutting off the engine. I wanted to warn others that this can occur and not to trust the transmission controls 100%.
Reading the 2018 Owners Manual (pg 242), there are TWO AWD settings. The one at the 9 o'clock position remains active through future ignition cycles. But the one at the 2 o'clock position (described as the "off-road mode") does NOT remain active through future ignition cycles. You will be back in 2WD if you shut down and restart the engine.

So you need to be clear about which "AWD" mode you are discussing.
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post #5 of 5 (permalink) Old Today, 09:32 AM
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Originally Posted by greentraverse View Post
Reading the 2018 Owners Manual (pg 242), there are TWO AWD settings. The one at the 9 o'clock position remains active through future ignition cycles. But the one at the 2 o'clock position (described as the "off-road mode") does NOT remain active through future ignition cycles. You will be back in 2WD if you shut down and restart the engine.

So you need to be clear about which "AWD" mode you are discussing.

Four reads of the manual and I missed that point. Thanks.



Makes GM sense because 4WD trucks use a positive click switch to mechanically toggle through modes whereas the Traverse uses a (cheaper setup) spring loaded momentary switch to toggle electronically through the modes.

Current Chevys -'16 Silverado LT;'18 Malibu LT Redline;'18 Traverse Premier Redline<br /><br />Previous&nbsp; Chevys:16 Malibu LT2 '17 Impala;'16 MalibuLT;'15 Camaro LS;'15 Traverse; '13,'12 and '07 Avalanche LTs; '11 Tahoe LT; '13 &'11 Malibu LTs; '08 Trailblazer;'06 Colorado WT..... Chrysler era.....'80 Citation;'75 Impala;'72 Chevelle;'69 Camaro R/T;'65 Impala SS;'62 Nova
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