Reverse to drive stalling

[NT1078]

Hi All,
Since owning my Envoy I have had this annoying and potentially dangerous problem:
I back out of my drive way.
Shift from Reverse to Drive.
Rev's drop, shutters and the engine dies.

It will start back up again, from Park to Drive and Park to Reverse it takes off no problem, this seems to happen only from a Reverse to Drive transition.

I have tried feathering the gas a bit while shifting, but I don't want to "clunk" it harshly into drive.

Oil, and plugs are recent. I have run fuel injection cleaner through it, been running premium unleaded as of late, no improvement.
Throttle body was cleaned earlier in the summer.

Thanks all for your assistance!

Adam

 

[jimmyjam]

whats the transmission fluid situation

 

[BlazingTrails]

are you stopping before switching from reverse to drive? have you cleaned the Throttle body?

 

[NT1078]

Transmission fluid and filter was serviced under a year ago.
I cleaned the throttle body earlier in the summer hoping the problem would go away and it has not.

It should be mentioned this doesn't happen all the time, it is sporatic and will do this neat trick either cold or warmed up.

Adam

 

[NT1078]

Transmission fluid and filter was serviced under a year ago.
I cleaned the throttle body earlier in the summer hoping the problem would go away and it has not.

It should be mentioned this doesn't happen all the time, it is sporatic and will do this neat trick either cold or warmed up.

Adam

 

[BlazingTrails]

But do you completely stop before shifting from reverse to Drive? If not that puts a higher load on the engine briefly, which sounds to me like you may have a vacuum leak somewhere causing it to idle too low or have an incorrect fuel trim. is it hot or cold or random when it happens?

 

[Playsinsnow]

Coming to a complete stop before shifting into Drive is important. Some car makers have even included this in their owners manuals, edit: that not coming to a complete stop may cause the engine to stall.

I agree with Blazing. Check out the intake and come to a complete stop, maybe it is that simple?

 

[NT1078]

Yes, I do come to a complete stop. It did it at least three times today. The revs drop to about 500, it shudders, then stalls. I will try to capture this behavior on video and share. Thanks for the replies thus far.