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2004 GMC Yukon SLE 4dr 1500

2004 GMC Yukon
Trim Info:
Rear Wheel Drive, 4 Door
16 mpg city / 19 mpg hwy
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September 11, 2013, 5:58 am

Yahya A
 

Question: Transmission change.....

I got youkn XL 2013 LT It did 650 mile
When I'm driving it and doing 100 MPH
If I give more gas I mean step on it
To increase the speed the Transmission Change to number 4 ! and that cuse the engine sound high much high ! My Question is that normal ??????or thers something wrong !


September 22, 2013, 5:04 pm

Elizabeth K
Expert Mechanic

When you floor the engine, it causes the transmission to downshift into what is called 'passing gear.' So that is normal. The manufacturer did not intend for you to floor it at 100mph, probably. Can you get adequate acceleration by pressing the pedal down less? If stepping on the pedal at all, or slightly, causes it to downshift, then something is wrong. But if it only happens when you floor it, that is normal operation (though it's not recommended).


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October 19, 2013, 9:57 am

Yahya A
 

I got youkn XL 2013 SLE It did 6562 mile Only
When I'm driving it mountain road ( up scarment ) Transmission Temperature Reach 230F ( 110c )
you will ask how he was driving it....? Normal driving....easy way....,My Question...what normal Temperature ?
I mean in level road ? up High Road...? OR When driving it towing my Boat....? Also what maximum ( Serious )
Temperature.....Need to STOP the car until get down temperature...? By the way the car temperature that time
It was 221 F ( 105 c ) .


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October 22, 2013, 5:33 am

Elizabeth K
Expert Mechanic

Some info on transmission temperatures:

http://www.tahoeyukonforum.com/forum/showthread.php?p=667146

http://www.silveradosierra.com/transmission/trans-temp-t4398.html


1/1 users found this helpful.

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