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Question About Auto Transmission Hold Back?

pistonslap

By pistonslap
in Ask A GM Technician

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pistonslap Enthusiast

pistonslap

Posted
Posted

I recently bought a 2000 Chevrolet Silverado 4x4 5.3 automatic. I have not owned a auto for about fifteen years and never in a pickup.The pickup does not seem to slow down on hills by shifting down,except for first. I am not sure which tranny i have but i think it is a 460le?Do these transmissions hold back very good?And shouldn't my motor rev up if the tranny is trying to hold back? The motor "seems" strong and doesn't use any oil. The transmission shifts fine otherwise,and when you slow down it shifts down. Any comments?

txab Senior Enthusiast

txab

Posted
Posted

Are you saying when you manually shift it to a lower gear it's not slowing down by using engine braking? I might think that the factory tune that is installed these trucks, protects the truck from too much torque and over revving in the situation you describe. May all be a part of torque management. GM probably wants you to use the brakes.

Green_Monster Enthusiast

Green_Monster

Posted
Posted

Stop downshifting and use the brakes. You will kill the life of you tranny by downshifting all the time to slow down or hold a speed on hills. Brake pads are a lot cheaper than new transmissions.

rodram Enthusiast

rodram

Posted
Posted

... I always shift down at least one gear into '3' when on a steep downhill incline on non-highway roads .... but there is not a real noticeable engine compression braking in my 5.7L (w/ 4L60E transmission) ... just an old habit from driving with standard transmissions....

 

... when towing a travel trailer, I also keep the transmission in '3' (not OD) to keep the torque converter lockedup on the highway to reduce overheating when pulling a heavy load.... (learned the hard/expensive way earlier this summer...)

pistonslap Enthusiast

pistonslap

Posted
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Posted

Thanks for the reply s. And thanks Rod R that is the info I was looking for. Maybe I should of been clearer.I am talking hilly terrain on gravel roads with numerous short hills. If you have ever owned a standard in this kind of terrain you would know what I am talking about.You have more control and a smoother trip if your using engine braking for corners on hills etc. And the tranny I have is the 4l60E.

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