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Old 10-09-2019, 12:54 PM   #1
GoTopless
 
Drives: 2013 Camaro ZL1 Convertible
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Think I may have an Issue

I have a 2013 auto ZL1 convertible that seems to have an transmission engagement issue at low speeds. Seems to happen below 10mph but not always. Kind hard to explain but when go to work i usually back into my parking space. It seems that at times went I select reverse and tap on the gas the cars transmission hesitates and does nothing for a second the engages then goes in reverse. I had a 2011 2 SS that I did the same thing with and Never did it ever hesitate. Sometimes when coming to stop at a light a half second after it feels like it gives one surge forward like i hit the gas or someone slightly tapped me from behind. Almost feels like those that own a truck and haul a water container and when you come to a stop the water wants to keep moving you forward. Or if im making a turn at low speeds and i tap the gas the revs seems to jump before it engages .
doesnt happen all the time Any ideas?
Mark
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Old 10-09-2019, 12:57 PM   #2
G8One2
 
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Check the fluid level.
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Old 10-09-2019, 01:16 PM   #3
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What temp range does the trans fluid need to be when checking? Flat surface and unlooosen the plug andif trans fluid comes dribbling out its the correct level?
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Old 10-09-2019, 02:07 PM   #4
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Car should be level, up to temp and the car should be running.
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Old 10-09-2019, 02:08 PM   #5
G8One2
 
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Normal operating temp. Not entirely sure on the proper way to check because i have yet to have to do that on a 6l80/6l90 but if it has a center plug with a check hole in the middle, then yes, if it dribbles out its full, if not top it off. Car needs to be level and running at idle when checked, preferably on a drive on hoist.
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Old 10-09-2019, 05:57 PM   #6
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Thank You everyone.
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Old 10-09-2019, 06:49 PM   #7
Tommy434
 
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Check into GM bulletin #pip4112s about the hesitation/sag on acceleration they claim it’s on almost all there vehicles( drive by wire) I think it’s a bunch of crap and a problem they can’t figure out my 18 Denali Diesel truck is so bad it’s dangerous to drive. They claim there is no fix good luck
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Old 10-09-2019, 07:37 PM   #8
GoTopless
 
Drives: 2013 Camaro ZL1 Convertible
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So its one of those it happens on some vehicle but not others.
Shit its annoying as hell.
I wonder if its a good idea for one to reset all the shift adapts even though your probably not supposed to do that unless youve had the tranny out and overhauled or changed the VB or TCM programming in some way.
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Old 10-09-2019, 07:43 PM   #9
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Drives: 2013 Camaro ZL1 Convertible
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Found the correct temp to check the 6L90. 86* to 122* Level car running, taketo each gear range for 3 sec then go to park and let it idle to reach 86* to 122* and idle at 500 to 800rpm.
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Old 10-10-2019, 07:33 AM   #10
Bigtime53

 
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Quote:
Originally Posted by Tommy434 View Post
Check into GM bulletin #pip4112s about the hesitation/sag on acceleration they claim itís on almost all there vehicles( drive by wire) I think itís a bunch of crap and a problem they canít figure out my 18 Denali Diesel truck is so bad itís dangerous to drive. They claim there is no fix good luck
GM has revised this. I did have the bulletin # but deleted it after my truck was corrected. GM found the trans fluid they used when the trucks were built created moisture in the fluid and caused the problem your having.GM has not put out a recall and they should. Talk to the service dept about this. They have a new trans fluid that has been developed that will fix your problem. The bulletin in part reads "if a customer complains about erratic shifts or shuttering when driving to change to [whatever the part number is for the fluid] and a test drive to duplicate is not necessary. I hope this helps.
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Old 10-10-2019, 03:51 PM   #11
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That was a huge help for me thank you very much thanks again sorry for hijacking your thread lol Tommy
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