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10-21-2021, 08:47 PM
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#1 |
 
Drives: 2017 ZL1 A10 Join Date: May 2016
Location: Colorado
Posts: 142
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⚠️ P2818 Transmission Code ⚠️
Buddy is getting a P2818 Code on his A10 ZL1 2018. I tried searching but didn’t find much info. Car is modified Whipple and Nitrous - transmission is tuned. Worried that the transmission may be on the way out but wondering if anyone else has ran into this. Considering sending it out of state to Tim King but ideally he would like to enjoy it a bit more first. Any first hand experience is helpful, we don’t have many too authorities on the inner workings of A10’s here local in Denver, CO. #PFA
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10-22-2021, 06:17 AM
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#2 |
          
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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transmission solenoids are usually a simple swap in other transmissions. It maybe just the solenoid failing and no need to replace the entire transmission. It is at least worh a try.
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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10-22-2021, 07:38 PM
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#3 |
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2019 ZL1 1LE MY GOON
Drives: 1980 Z28 Big Red. Join Date: Dec 2018
Location: Stoney Creek
Posts: 2,061
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I agree with Stephen. I would replace that solenoid first. I have seen the,m fail on other GM vehicles over the years.
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10-26-2021, 10:23 PM
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#4 |
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Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
Posts: 4,978
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What does the Trans tuner say?
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10-27-2021, 07:14 PM
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#5 |
 
Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020
Location: OR
Posts: 479
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Your transmission runs off of many pressure solenoids. You will need to put it on a pressure testing machine to find which solenoid is malfunctioning. Notice in the description it states it shows a pressure drop as a malfunction solenoid - not which one.
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JRE Terminator Rough Idle Cam
Magnuson 2650 - 15% lower, 90mm upper FIC+30% DSX Flex fuel/Low side NW 103mm TB/Roto-Fab CAI Monster S Series Elite E2-X 2" TSP LT's BMR:BK063, BK060,TCA061, UTCA060, UTCA063 Weld Beadlocks/17" NT5R2 |
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10-27-2021, 08:02 PM
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#6 |
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Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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solenoid "H" is specific...
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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10-28-2021, 02:36 PM
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#7 |
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Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020
Location: OR
Posts: 479
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I respectfully disagree. The definition of code P2818 says "Transmission may not shift properly is defined as a pressure control solenoid "H" stuck on".........Then it goes on to say the TCM uses pressure control solenoids - I emphasize the plural - to control the pressure sent to the various clutch packs. When the TCM detects a pressure control solenoid - it doesn't isolate which one because there are multiple solenoids - is not performing as desired, it will set the P2828 code. A line pressure gauge will need to be used to isolate the affected clutch pack and the corresponding solenoid.
__________________
JRE Terminator Rough Idle Cam
Magnuson 2650 - 15% lower, 90mm upper FIC+30% DSX Flex fuel/Low side NW 103mm TB/Roto-Fab CAI Monster S Series Elite E2-X 2" TSP LT's BMR:BK063, BK060,TCA061, UTCA060, UTCA063 Weld Beadlocks/17" NT5R2 |
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10-28-2021, 09:50 PM
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#8 |
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Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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I found a bit of information concerning the solenoid strategy in the 8 and 10 speed GM transmissions with a useful chart. All of this is intended to be helpful/useful information:
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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10-29-2021, 11:51 AM
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#9 |
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Drives: 2017 Chevrolet Camaro ZL1 M6 Join Date: Jul 2020
Location: OR
Posts: 479
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I stand corrected, sir. Nice job!
__________________
JRE Terminator Rough Idle Cam
Magnuson 2650 - 15% lower, 90mm upper FIC+30% DSX Flex fuel/Low side NW 103mm TB/Roto-Fab CAI Monster S Series Elite E2-X 2" TSP LT's BMR:BK063, BK060,TCA061, UTCA060, UTCA063 Weld Beadlocks/17" NT5R2 |
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