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2004 Buick Rainier "crow Hop"

Retrofitter

By Retrofitter
in Ask A GM Technician

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Retrofitter Enthusiast

Retrofitter

Posted
Posted

Move here from another heading. Got no response there, trying to get some help or ideas.

 

I'm having intermittent problem with what I think the service dept. called "crow hop". It's AWD and only occurs when turning at slow speeds, I.E. turning into a driveway or backing out. Seems to be ok when going straight but when accelerating hard feel something. It only occurs sometime. I took it to the dealership and of course it would not occur and the mechanic found no codes and said he could not find anything wrong. I ask if the autotrac oil in transfer case may need to be changed and he said this would not cause the problem.

Any ideas? It's been doing this about a year, at first very intermittent, now getting more frequent and the wife is scared of it.

Thanks in advance for any ideas.

Tom

Z45 Senior Enthusiast

Z45

Posted
Posted

This can be common occurrence with 4x4 and AWD vehicles. Some are more prone to it than others. How are your front tires? Are they worn? If so they could slipping on the road surface and activating AWD? Something is causing the AWD to activate if its bad. AWD drive vehicles its critical to rotate tires every 6,000 miles to avoid abnormal front tire wear.

 

I notice this to a very slight extent on my AWD CTS if I turn sharp corners and give it the gas. The Transfer case must sense a momentary slip to engage AWD.

Retrofitter Enthusiast

Retrofitter

Posted
  • Author
Posted
This can be common occurrence with 4x4 and AWD vehicles. Some are more prone to it than others. How are your front tires? Are they worn? If so they could slipping on the road surface and activating AWD? Something is causing the AWD to activate if its bad. AWD drive vehicles its critical to rotate tires every 6,000 miles to avoid abnormal front tire wear.

 

I notice this to a very slight extent on my AWD CTS if I turn sharp corners and give it the gas. The Transfer case must sense a momentary slip to engage AWD.

Mike,

Thanks for the reply. Tires are fairly new, about 10k miles and I have rotated them. The pressure is the same all the way around. Sometime when the "crow hop" happens, it is bad, then when you straighten up it's ok. I'm beginning to think the encoder motor is going bad or bad connection

Tom

  • 1 year later...
Retrofitter Enthusiast

Retrofitter

Posted
  • Author
Posted
This can be common occurrence with 4x4 and AWD vehicles. Some are more prone to it than others. How are your front tires? Are they worn? If so they could slipping on the road surface and activating AWD? Something is causing the AWD to activate if its bad. AWD drive vehicles its critical to rotate tires every 6,000 miles to avoid abnormal front tire wear.

 

I notice this to a very slight extent on my AWD CTS if I turn sharp corners and give it the gas. The Transfer case must sense a momentary slip to engage AWD.

Mike,

Thanks for the reply. Tires are fairly new, about 10k miles and I have rotated them. The pressure is the same all the way around. Sometime when the "crow hop" happens, it is bad, then when you straighten up it's ok. I'm beginning to think the encoder motor is going bad or bad connection

Tom

 

Still having problem with "crow hop". Seems to happen more frequently now. Maybe the dealer can find something.

I'm hoping someone on here has an idea as to cause.

Is it possible to disable the AWD so it would be in 2WD all the time?

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

AWD is AWD,there is constant power to the front and back,there is no disconecting unless the frt driveshaft is removed ,or just inspect tires as mentioned ,different diameters of tires makes the driveline buck,fart ,bang,bind,hangup and generelly complain.

 

do the tires and get the wife happy ,cause some wives won't drive it again even after you say its fine.(trust me)lol

 

good luck,

 

 

elcamino Mike:your thinking auto 4wd with the sensing of slip,AWD is constant

Retrofitter Enthusiast

Retrofitter

Posted
  • Author
Posted
AWD is AWD,there is constant power to the front and back,there is no disconecting unless the frt driveshaft is removed ,or just inspect tires as mentioned ,different diameters of tires makes the driveline buck,fart ,bang,bind,hangup and generelly complain.

 

do the tires and get the wife happy ,cause some wives won't drive it again even after you say its fine.(trust me)lol

 

good luck,

 

 

elcamino Mike:your thinking auto 4wd with the sensing of slip,AWD is constant

 

Thanks for the reply Robert.

As I stated before, tires are fine, all the same kind, size, low miles, same pressure on all four.

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