01-03-2015, 08:09 PM | #1 |
pamorr
Drives: C7 Coup, Blade Silver Join Date: May 2014
Location: Seffner, FL
Posts: 5
|
Auto Transmission Proglem
Since picking up my 2014 Z51 coupe with auto transmission last august this problem has happened only three times. After sitting for a day or two and starting the C7, when shifting the auto transmission lever to reverse, nothing happens. After shifting down through reverse, neutral, drive and M with no connection, and then back up to park and increasing the revs a little it will go into reverse with a bit of a thump. No doubt shifting with increased revs is not good for the transmission but that is the only way it will shift into reverse.
Since this has only happened three times out of hundreds of starts the dealer has no idea what is wrong. The C7 won't repeat the problem while at the dealers. I hate to think that I will have to live with this problem. Any ideas? |
01-03-2015, 09:32 PM | #2 |
Drives: 2014 Corvette Coupe Join Date: Mar 2014
Location: Ohio
Posts: 171
|
simple things first, could be low fluid level, be sure they checked it properly. Symptom could happen more often on cool days.
|
01-04-2015, 07:53 AM | #3 |
Drives: 2014 Corvette Stingray Join Date: Dec 2014
Location: Warrenton
Posts: 20
|
why did you get an automatic?
|
01-04-2015, 09:20 AM | #4 |
Drives: 1974 & 2014 Corvette Stingrays Join Date: Mar 2013
Location: Troy, Mo
Posts: 623
|
I agree it may be low trans fluid. It might be worth thinking about the past experiences: was the outside temperature fairly cold? Was the car parked on any slope? From my experiences with my '74 Stingray, both can exaggerate a low fluid condition, giving symptoms you describe. It is certainly possible it was a little low from the factory.
__________________
'74 Stingray coupe, heavily modified, as seen in August 2011 VETTE magazine, 2014 Stingray Z51 #196, ordered 02/11/13, built 08/29/13, Museum Delivery 10/04/13, driven daily!
|
01-04-2015, 08:05 PM | #5 |
pamorr
Drives: C7 Coup, Blade Silver Join Date: May 2014
Location: Seffner, FL
Posts: 5
|
Wife can't drive a manual.
|
01-04-2015, 08:07 PM | #6 |
pamorr
Drives: C7 Coup, Blade Silver Join Date: May 2014
Location: Seffner, FL
Posts: 5
|
Dealer checked and changed the oil. Conditions were fairly warm weather and parked in a garage.
|
01-04-2015, 09:40 PM | #7 |
Drives: 1974 & 2014 Corvette Stingrays Join Date: Mar 2013
Location: Troy, Mo
Posts: 623
|
I would double check the fluid level following the method described in your owners manual, even though the dealer checked - mistakes do happen. If it is indeed at correct level, then the problem will be more challenging to diagnose, especially if no trouble codes turn up. Keep track of conditions whenever it happens, which might gradually show a pattern that can be repeated by the dealer. It may be that they will need to keep it overnight so it is truly cold before they attempt diagnosis again.
__________________
'74 Stingray coupe, heavily modified, as seen in August 2011 VETTE magazine, 2014 Stingray Z51 #196, ordered 02/11/13, built 08/29/13, Museum Delivery 10/04/13, driven daily!
|
01-05-2015, 05:37 AM | #8 | |
pamorr
Drives: C7 Coup, Blade Silver Join Date: May 2014
Location: Seffner, FL
Posts: 5
|
Auto Transmission Problem
Will do. Thanks for your suggestion.
Quote:
|
|
02-02-2015, 09:21 AM | #9 |
Drives: 2014 Stingray Join Date: Jan 2015
Location: Lexington, KY
Posts: 8
|
From the manual, page 10-17: "The vehicle is not equipped with a transmission fluid level dipstick. There is a special procedure for checking and changing the transmission fluid. Because this procedure is difficult, this should be done at the dealer."
|
02-02-2015, 01:47 PM | #10 | |
Drives: mirsubishi raider Join Date: Jan 2015
Location: barstow
Posts: 4
|
Quote:
This is a good idea. |
|
02-05-2015, 09:01 AM | #11 |
Drives: 2014 C7 3LT/Z51 Join Date: Aug 2014
Location: Oviedo, FL
Posts: 3
|
Could it be that the Park button was touched? Possibly not engaged but brushed quickly and not fully engaged other than an electronic sensor issue? Just thinking outside the box for you.
__________________
The Rock
2014 C7 LT3/Z51 2014 Jaguar F Type S 2013 Ford F150 FX4 EcoBoost |
02-05-2015, 09:59 PM | #12 |
asptroopa1
Drives: 2014 Corvette Join Date: May 2013
Location: Little Rock Arkansas
Posts: 373
|
Mine does the same thing since I got it in October of 14 its prob done it 20 times. It can rev in reverse and doesnt move then THUD it feel like it released a lock on the wheels....took ot to the shop twice and no codes have ever shown up- I even videoed it for dealer........let me know if you find out an answer......mines an auto Z-51.........it has never done it in forward- and usually after sitting several days and cooler weather- never did it in the summer
|
02-06-2015, 09:48 AM | #13 |
Drives: '19 ZR1 Shadow Gray & '16 Z06 LBR Join Date: Jul 2010
Location: Bowling Green, KY
Posts: 408
|
OK...Let me go way outside the box here. I have washed mine in the garage and then moved it to another spot in the garage. Later - the next day - when I go to move it, I find that the tires (being a little sticky anyway) have stuck to the concrete garage floor. Mine is a manual and it kind of makes the same "thud" noise that you are talking about when tires let loose. Maybe?? Could your situations involve wet tires?
I first experinced this with my ZL1 which has very "sticky" tires. I warned you...way outside the box. |
02-06-2015, 08:26 PM | #14 |
pamorr
Drives: C7 Coup, Blade Silver Join Date: May 2014
Location: Seffner, FL
Posts: 5
|
Transmission Problem
Mine has done this three more times for a total of six times. Can't make any sense of it. Dealer has no idea. After being in the garage overnight, I have been putting the car in reverse about 3 to 5 seconds after starting and have had no more problems for a few weeks. Perhaps the increased revs with a cold start have been helping the problem.
|
|
|
|
|