12-01-2020, 03:41 PM | #1 |
2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,031
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Code P0700 / U0100 (2020 2SS, A10)
Code P0700 / U0100 (2020 2SS, A10)
Went to lunch with my daughter today, car ran fine, shut it down to eat and got in and started it up and the only gauge that worked was the Volts meter, everything else showed 0 and the Check Engine light was on, shut it down twice and tried a restart same thing. Drove home slowly (6 miles), transmission wouldn't shift and car sounded weird (very deep), thinking it was in 2nd or 3rd gear as it kind of lugged and the tone was very strange... Got it home and plugged in my OBD-II reader and got the following codes: P0700 P26C8 U0100 U0100 I cleared the codes and started the car, everything is back to normal, took it for a drive and everything seems fine. So, one time fluke or is something going bad? Car has 10.5 months old and has 2,900 miles on it and is stock (except for a GMP CAI (with the associated GM tune) and a Mishimoto Catch Can)... Is there a TCM or ECM update I should go to the dealer to get done? Should I wait to see if it does it again? Any input would be greatly appreciated!
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2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting
Added after delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph... |
12-07-2020, 10:02 PM | #2 |
Drives: 2020 Chevrolet Camaro LT1 Shock Join Date: May 2020
Location: Ramona, CA
Posts: 9
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Curious to know if you unplugged the Range disabler unit while experiencing the issue...maybe some correlation??
Obviously to read/clear codes, you had to... |
12-08-2020, 09:53 AM | #3 |
Drives: 2019 SS Join Date: Nov 2019
Location: Michigan
Posts: 91
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Interesting. Take a look at TSB #20-NA-055. (This TSB was expanded to include more models including 2018-2020 Camaro SS and ZL1). There appears to be two fault conditions that are most commonly mentioned:
1. Aborted Crank: Vehicle begins to crank, stops cranking and then has a successful start 2. CAN Lockup: IPC gauges inoperative Numerous DIC error messages Oil pressure gauge reads zero Coolant temperature gauge reads zero Speedometer gauge reads zero Tachometer gauge reads zero Fuel gauge reads zero Engine appears to be operating in a reduce power mode No brake assist Possible no electric power steering assist Transmission in default gear Battery gauges are correct No reverse gear and/or no back-up lights DRL inoperative Numerous DIC error messages displayed Note: Headlights can be manually turned On Note: U0100 alone is not a good indication of this issue. A better indication of the condition are the symptoms listed above. So, as it sounds like the transmission being in a default gear, multiple gauges not working, and the battery gauge working, this may describe your problem. Looks like the cause is a software anomaly and the fix is to program the ECM to the latest software update. Not sure if you can just mention this to the dealer and that will be enough to get the software update or if you just need to watch out for if it happens again. |
12-08-2020, 10:46 AM | #4 | |
2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,031
|
Quote:
I'll have to make an appointment with my dealer and have them flash the ECM to the latest software. THANK YOU!
__________________
2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting
Added after delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph... |
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12-08-2020, 10:48 AM | #5 | |
2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,031
|
Quote:
__________________
2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting
Added after delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph... |
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12-08-2020, 12:10 PM | #7 |
2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,031
|
__________________
2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting
Added after delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph... |
12-08-2020, 01:06 PM | #8 |
Drives: 2019 SS Join Date: Nov 2019
Location: Michigan
Posts: 91
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12-08-2020, 01:23 PM | #9 |
2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,031
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I have an appointment at the dealer on Thursday to get the ECM flashed with the latest software. That SB describes my issue completely.
The dealer wasn't happy I cleared the codes (I had to, the car was barely drivable) but they are going to flash it for me regardless. Thanks Again!
__________________
2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting
Added after delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph... |
12-10-2020, 07:40 PM | #10 |
2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,031
|
Went to the dealer and had TSB 20-NA-055 (v1.6) completed (reflash of the ECM)... Hopefully this problem will never recur...
Here is the TSB: TSB 20-NA-055 (v1.6 - Sept 2020) Because when you are going roughly 30 mph your instrument cluster shouldn't look like this (issue happened at start up but I had to get it home (about 4 miles), my daughter took this while I was driving): Car wouldn't shift, stayed in one "default" gear which I think was 2nd or maybe 3rd, sounded weird, check engine light on and Traction Control light on... Glad to find out it was a known issue and there was a fix for it (the above TSB).
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2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting
Added after delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph... |
12-11-2020, 01:37 PM | #11 |
Drives: 2019 SS Join Date: Nov 2019
Location: Michigan
Posts: 91
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Good follow up! This will help anyone else tremendously if their Camaro has the same issue.
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12-11-2020, 02:06 PM | #12 |
2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,031
|
Thanks, I freaked out when it happened to me and was VERY concerned it would be a very difficult to find, intermittent issue (and I lost faith in driving the car long distances), I was thrilled to find out it was a known issue AND there was a fix for it, thanks to this forum!
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2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting
Added after delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph... |
05-22-2022, 04:45 PM | #13 | |
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05-22-2022, 04:46 PM | #14 | |
2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,031
|
Quote:
Knock on wood, I have not had a single issue since the ECM flash was completed (per the TSB)...
__________________
2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting
Added after delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph... |
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