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08-21-2020, 02:28 PM
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#1 |
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Registered User
Join Date: May 2015
Location: Montana
Posts: 3,696
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AT computer glitch?
We took the pickup to town today for some groceries and the lumber for the bed in the topper. It seemed to be shifting rough and late, and running too high RPM on the highway.
I checked the fluid in town and it was fine. Coming home it did just fine, running about 2100 at 70. 6.0 / 6sp. Is this weird or what ?????
__________________
Current/past Chevy/GMC trucks: 1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner |
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08-22-2020, 07:56 AM
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#2 |
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State of Confusion!
  
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 47,216
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Re: AT computer glitch?
No clue, but wonder if any codes got stored that could lead you to an idea.
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Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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08-22-2020, 10:59 AM
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#3 | |
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Registered User
Join Date: May 2015
Location: Montana
Posts: 3,696
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Re: AT computer glitch?
Quote:
Edit: I'm thinking that if this happens again, that I should just pull over and shut off the engine, and then restart and see if that "re-boots" the TCU so it works right. The fluid was supposed to be fresh from the dealer, BTW.
__________________
Current/past Chevy/GMC trucks: 1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner Last edited by 1976gmc20; 08-22-2020 at 11:06 AM. |
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08-23-2020, 01:13 PM
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#4 |
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Registered User
Join Date: May 2011
Location: Northern Calif.
Posts: 3,770
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Re: AT computer glitch?
Could "tow/haul" mode be on, but light off?
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08-23-2020, 10:00 PM
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#5 | |
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Registered User
Join Date: May 2015
Location: Montana
Posts: 3,696
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Re: AT computer glitch?
Quote:
Even in tow/haul mode it should still go into OD, right? Was running almost 3K at 70 mph going to town. I should try it out and see if the light works and what if any difference it makes.
__________________
Current/past Chevy/GMC trucks: 1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner |
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08-23-2020, 10:52 PM
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#6 | |
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Registered User
Join Date: May 2011
Location: Northern Calif.
Posts: 3,770
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Re: AT computer glitch?
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08-24-2020, 11:08 AM
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#7 | |
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Registered User
Join Date: May 2015
Location: Montana
Posts: 3,696
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Re: AT computer glitch?
Quote:
I thought the transmission was just cold, but it's ten miles just to get to the highway. Should be fairly well warmed up by then. Unless there's some sort of sticky solenoid, I feel like it's in the computer. I prefer stick shift but I have to say that this six speed a/t works really nice. It doesn't "hunt" gears going up hills and it will actually shift itself down and hold you back when you let off the gas going downhill.
__________________
Current/past Chevy/GMC trucks: 1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner |
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