Last post on Oct 31, 2013 at 9:37 AM
You are in the Chevrolet Suburban & Tahoe
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Chevrolet Tahoe, Transmission, SUV
#305 of 422 Irractic Transmission shifting
Oct 18, 2011 (4:06 pm)
Well here it is just 1yr into owning my 2005 tahoe and now I have a 3rd problem that just pooped up. So on top of my liftgate being stuck in the lock possition leaving it totally useless, the remote key fob will not unlock my doors but will lock and set the alarm, but now ar 78,500 my transmission is starting to act up. I have never dogged this car infact I had all the dealer requiered maintainace done on it as soon as I bought it. The other day I was sitting at a red light and as the light turned green i pressed the gas pedal and teh car seemed to hesitate a little almost like it wanted to stall. Today on the way home from work on the freeway the transmission seems to shift up only to 4th gear and then staysthere unless I backed off the gas. At 60mph the RPM's was at almost 3,000 which I know is not good. The car shifts down just fine and there are not other indicator lights or warning what so ever. its a 2005 Tahoe with the 5.3lt vortec engine and 4wd. Does this mean I need to replace or rebuild the transmission or could it be something else? If I knew that Tahoes had some many damn issues and Chevy dont want to fix or recall them I would have never traded my Durango for it. If I dont get a good resolution with this issue I will never purchase a Chevy product again and will share my pains with all my friends and family to follow my lead
#306 of 422 Re: Irractic Transmission shifting [dmntd]
Oct 19, 2011 (6:55 pm)
Well took my Tahoe to a transmission shop and thank god it was not blown or in need of any major repair. The Chevy dealer over filled my transmission fluid by 2 quarts when they topped off my fluids during an oil change. It did give him a P0642B code which he cleared out and now my Tahoe is running like new. But was told I will have to at least have it serviced within 5 to 6k miles just to keep it running smooth.
#307 of 422 Re: 2006 Tahoe Auto 4WD Z71 only drives in 4WD [woodycox]
Oct 27, 2011 (2:43 pm)
Did you find the issue, I am having the same problem.
#308 of 422 Re: 2006 Tahoe Auto 4WD Z71 only drives in 4WD [cmoore11]
Oct 29, 2011 (6:08 pm)
I replaced one of the the O2 sensors. All seemed right with the world then it happened to me again. However, 2 things were common to both incidences. I was running on fumes...about the drag up empty...and I was driving in 2WD. As of right now, no problem. I intend to change all Trans fluid, filter, and gasket very soon. Current mileage = 130K
#309 of 422 Re: 2006 Tahoe Auto 4WD Z71 only drives in 4WD [cmoore11]
Nov 01, 2011 (8:29 am)
Have you considered getting this diagnosed at your servicing dealership? Is there anyway we can help? Let us know Ė email Christina here with more information (name, VIN, contact info, dealership).
GM Customer Service
#310 of 422 Re: Irractic Transmission shifting [dmntd]
Nov 01, 2011 (6:43 pm)
Ok so after a week my tahoe started doing the same thing again with a slight hesitation when starting off and tehn not shifting into overdrive while on the freeway. I have to take it back to the transmission shop that check it out before to have them do an overnight diagnostic so see if their computer can detect the problem since there is no check engine light nor a service light coming on.
#311 of 422 Re: Irractic Transmission shifting [dmntd]
Nov 02, 2011 (6:26 am)
Looking forward to hear how your visit to the shop goes. If Customer Assistance can help, please donít hesitate to email Christina though the email address provided on this forum.
GM Customer Service
#312 of 422 Re: Irractic Transmission shifting [dmntd]
Nov 08, 2011 (11:08 pm)
I had the same problem recently but it turned out to be simple fix. I had installed a K/N Intake system on my Tahoe years ago and never had a problem but when I had the same problem as you I took my truck in to my mechanic and he told me the stock mass air flow sensor wasn't reading the correct amount of air due to my K/N. I purchased a performance mass air flow sensor from Granatelli like he recommended and problem solved. It runs and shifts better than ever. I never got a light either. To test your mass air flow sensor just unplug the wires to it and drive the truck. If it runs and shifts good than you know thats what it is. You will get an engine light on when doing this but you can reconnect the wires and it should go away or just have it reset at Autozone. Let me know how it turns out.
#313 of 422 Re: Fuel pump?? [afunfsinn]
Nov 08, 2011 (11:13 pm)
Check the mass air flow sensor. unplug the wires to it and drive the truck. if it drives good again you will now know what it is. I had the same issue. Replaced my mass air flow sensor ( which are expensive $200 to $300) but my truck is back to normal and worth the $
#314 of 422 Re: Irractic Transmission shifting [dmntd]
Nov 10, 2011 (6:15 am)
I have a 2001 Tahoe I just picked up from a friend. He hasn't had any issues with the tranny and Now less than a week into me having it, The downstream O2 Sensor has thrown a code. I reset the codes and now It's shifting hard from 1st to 2nd and 2nd to 3rd. Same when it downshifts. It's not slipping, it's just changing into gear kind of hard. On the highway I'm fine no problems. I did see that there tranny dip stick did have bubbles on the fluid and it is over filled. I plan on taking it to AAMCO to see if they can diagnose the problem and hopefully won't be to much. I am replacing the O2 sensor
I also checked out this website and it kind of leads me to believe the O2 sensor is the cause, but my friend who is a mechanic says more than likely it's something else.
I love the Tahoe and I really don't want to move to anything else. So i'm praying it's something simple