Last post on Oct 05, 2013 at 2:00 PM
You are in the Chevrolet Colorado and GMC Canyon
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GMC Canyon, Transmission, Truck
#1 of 40 T-150 Transfer Case Phantom shift
Sep 06, 2006 (7:51 am)
Hi, I own a 2005 Colorado Crew Cab 4WD Pickup. I have a problem with the 4WD. The truck involuntary moves from 2 wheel drive to 4 wheel drive. This happens at least once or twice a week.
The truck randomly (involuntary) moves from 2 wheel drive to 4 wheel drive when:
1. Slowing down for hi-way construction areas for a period of time (front wheels kicking in and binding up).
2. Coming to a stop, then, turning at a stop sign. (front wheels binding up)
3. Pulling into a gas station or parking lot and turning left or right (front wheels binding up).
Does anyone else have this problem. I would like to visit with them. GM has written a bulletin on this issue, but has not come up with a solution at this time. Thanks.
#2 of 40 Re: T-150 Transfer Case Phantom shift [xwa]
Nov 07, 2006 (9:17 am)
well I also have the 2005 Colorado 4 wd, same problem has occurred twice....this is the easier part....Last week after making a right hand turn and getting onto the gas again, the engine revved, car felt like out of control....loss of steering
As a result wiped out the side of the truck, a mailbox and thank goodness no oncoming traffic as the truck went across the hiway.
Right now the truck is in the shop getting tested....found nothing wrong mechanically....called Customer Service at GM...opened a file, and told me to take it to another diagnostic test at a certified dealer and call back.
Scared to drive this vehicle...was lucky this time.
Does anyone else have this problem?????
Any help on this appreciated.
#3 of 40 Re: T-150 Transfer Case Phantom shift [xwa]
Jan 06, 2007 (8:40 am)
I also own a 2005 Crew Cab 4WD Colorado Z71. I am having a similar problem with my 4WD. Mine doesn't randomly engage the 4X4 but then I'm in 4WD I have the same front wheels binding problem when turning right or left. I have brought the vehicle in for repair and Chevy service had replaced the rear pumpkin gear box. They said that the rear end was causing the front end to bind up. I'm still having binding problems with the front end since the repair. But now I'm also having problems with the 4X4 that is won't disengage properly. I push the 2WD button and it shows that the vehicle is in 2WD but the front end is still engaged for a long period of time. I now have a case number against this vehicle at General Motors deeming it unsafe. I have had a number of cascade failures on this vehicle that prompted me to file with General Motors Corp. I would like to know the GM bulletin number or link that talks about this issue. Thanks
#4 of 40 Re: T-150 Transfer Case Phantom shift [xwa]
Apr 30, 2007 (2:05 pm)
My truck just started doing this also. I have no explanation for why. If someone finds out something I would appreciate some kind of answer for this.
Jun 21, 2007 (5:31 pm)
I have a 2007 Colorado 4X4,Z-71 ext.cab.4 cyl,5 speed.I just got my truck back from the dealer yesterday.Problem:stuck in 4 wheel drive,yet the light said it was 2 hi.I did not put it in 4 wheel drive either.I have less then 2200 miles on this vehicle.The dealership never heard of this happening before(YEAH RIGHT).I am pushing 56 years old,and this ain't my first rodeo.I've been buying new 4x4's for over 25 years,and never have I encountered this type of problem.I will call them tomorrow and read them my riot act.I'm pissed.
#6 of 40 Re: Transfer case [greenjeanz]
Jun 22, 2007 (4:18 am)
I've had my 04 go into 4 wheel drive before, twice as I remember but the light said it was in 4 wheel drive. Could be just an adjustment was needed. I complained about mine and they looked at it. This was a couple years ago and so far no problems. I'd give them a break as I to have not heard of your problem and only a couple times has anyone had my problem. If it happens again then complain but no since pissing them off this early in the game.
#7 of 40 Re: Transfer case [greenjeanz]
Jun 23, 2007 (6:20 am)
I had a similar problem with my '95 Jimmy. It seems that the 2wd/4wd lights are keyed by the position of the electric motor that engages the front prop shaft at the transfer case.
This in turn sends a signal to a vaaccum switch that engages the right front axle putting the truck in 2 or 4 wheel drive.
Although the lite may say a change has occurred, the vacuum switch may or may not have activated, and this is when you have the problem.
If one has a transfer case that uses a coupling inside the transfer case to engage the front axle as in selectable 4wd, the electronics operating it, can cause the same problem.
Had it occasionally on a 2002 Envoy.
One should think that the technicians should, by now, be familiar with both problems.
#8 of 40 Re: Transfer case [ski4]
Jun 24, 2007 (4:46 pm)
I guess I'm just pissed because they tried to make me feel like I don't know how to drive or something.I did catch the service manager try to cover up our test ride,he put the vehicle in 4 wheel low,and right before our eyes,it went back to 4 high.I said "thats interesting",he said nothing.I've got a 5 year,100K mile driveline warranty,so I shouldn't care too much.I'm just waiting for a half ton diesel pickup anyways.
#9 of 40 Re: Transfer case [greenjeanz]
Jun 24, 2007 (5:33 pm)
they can be a real pain getting into 4L so I'm not surprised. I have found if every so often you put it in 4L it helps keep everything working right. Kind of like the old saying, If you don't use it you will lose it.
#10 of 40 Re: Transfer case [dmathews3]
Aug 06, 2007 (2:33 pm)
That makes sense.I've had my truck since Jan of this year,and I just have 2600 miles on it.It will probably take 3 years to break it in,LOL.By then,I'll have the diesel.