Automatic Transmission Jerks Jamestown NY

I have a 2001 Chevy 1500 extended cab with small v 8 4.6 I think with a automatic transmission it does fine until you get to 41 mph where it shifts to overdrive I guess. Find out more about this car owner’s transmission issue and what you can do if you are ever facing such a problem with your vehicle in Jamestown.

Local Companies

Napa
(716) 761-6875
124 W Main St
Sherman, NY
Spony's Garage
716-664-4271
1436 Foote Avenue EXT
Jamestown, NY
Allegheny Transmission Service
814-723-4181
700 Pennsylvania Ave E
Warren, PA
Conewango Auto Sales LLC
814-723-9798
2812 Pennsylvania Ave W
Warren, PA
Safelite Auto Glass
(888) 820-2558
1514 Washington St
Jamestown, NY
Electric Motor Specialties
(716) 487-1458
490 Crescent Street%2C %23 496
Jamestown, NY
Napa Auto Parts
(814) 723-5600
1201 Pennsylvania Ave W
Warren, PA
Robo Enterprises Inc
716-665-2487
P O Box 940
Jamestown, NY
Dan Hoffman's Koebley Collision
814-723-8560
10 Biddle St
Warren, PA
Du Boys Auto Electric
(716) 595-3439
8655 Glasgow Road
Cassadaga, NY

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Reader Question I read your articles regularly. I now have a question for you.

I have a 2001 Chevy 1500 extended cab with small v 8 4.6 I think with a automatic transmission it does fine until you get to 41 mph where it shifts to overdrive I guess. The RPM drop to 1100, when you speed up slowly to say 45, 46 mph it "bumps" real bad several times. I changed the fluid and filter 6 months ago at 50,000 but this has not helped.

I have taken it to a good trans shop 4 times and they swear nothing is wrong with the unit. It is aggravating to drive, if you kick it into passing gear it does fine. At lower speeds fine as long as you are not going 40 mph to 50 mph. I did take it out of town the other night and drove it hard; kicking it into passing gear and running it 90-95 mph many times and now it seems to be better. No check engine lights or warnings have come on, but it bothers me that it may act up again. I was just before trading it for a Dodge or Ford.

I bought this truck from my dad 2 years ago, who bought it new from the dealer and I know he has never abused the truck. I do not tow any thing and only have driven it 11000 miles in 2 years.

I usually drive my motorcycle, hope you have a solution, it is almost paid for, and I really like the truck and do not want a new one.

Thanks!

Greg

Hey there Greg,

I would HIGHLY suspect you have a bad spark plug wire that is breaking down. I would inspect and or replace the spark plugs, plug WIRES, distributor cap and ignition rotor. At 40mph in overdrive with 1100 RPM – that is like driving a 10-speed bike in 10th gear and only doing 5 mph….it take a lot of leg strength to gain momentum.

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