Grinding noise when driving Chevy Tahoe

16 messages, Last post on Apr 04, 2009 at 9:22 AM

You are in the Chevrolet Suburban & Tahoe Forum. Your Hosts are steve_ & tidester

What is this discussion about? Chevrolet Suburban, Chevrolet Tahoe, Chevrolet Tahoe Limited/Z71, SUV

Outline

Messages Page 3 of 3: 1; 2; 3; Prev; Next; Last

#15 of 16 Re: 2003 tahoe transmission failure [dave205] by arrie Apr 03, 2009 (5:53 am)
Replying to: dave205 (Apr 01, 2009 6:09 pm) After replacing transmission as many times as you have it does not sound like it really is a transmission problem. It could be that when they bolt it on you have axial forces between transmission input shaft and torque converter, which then cause bearings fail in transmission, or something similar. Car shops just keep replacing the transmission but the root cause probably is with bad fit / tolerance between the transmission and engine block / torque converter. Also need to make sure the drive shaft from transmission to rear differential is not axially loaded. Arrie Replies to this message: dave205 (Apr 04, 2009 9:22 am)
#16 of 16 Re: 2003 tahoe transmission failure [arrie] by dave205 Apr 04, 2009 (9:22 am)
Replying to: arrie (Apr 03, 2009 5:53 am) I actually had the tahoe at the dealer for two days and they can't replicate the problem(transmissions was slipping so much that I was not driveable when I dropped it off). they even dropped the pan to look for metal and wear(which is how they found my 2nd failed transmission---at my request). the 1st and 3rd transmissions just completely failed with no warning signs--both within 5 mins of driving after start up. one of the techs even drove it personally for two days. I have it back and it seems to be running fine---for now. I wonder if it is a computer issue--the service 4wd did come on for a few minutes when it was running really badly. I will let the dealer know on monday what you had suggested(thanks)

#15 of 16: Re: 2003 tahoe transmission failure [dave205] by arrie; Apr 03, 2009 (5:53 am)

Replying to: dave205 (Apr 01, 2009 6:09 pm)

After replacing transmission as many times as you have it does not sound like it really is a transmission problem.

It could be that when they bolt it on you have axial forces between transmission input shaft and torque converter, which then cause bearings fail in transmission, or something similar.

Car shops just keep replacing the transmission but the root cause probably is with bad fit / tolerance between the transmission and engine block / torque converter.

Also need to make sure the drive shaft from transmission to rear differential is not axially loaded.

Arrie

dave205 (Apr 04, 2009 9:22 am)

#16 of 16: Re: 2003 tahoe transmission failure [arrie] by dave205; Apr 04, 2009 (9:22 am)

Replying to: arrie (Apr 03, 2009 5:53 am)

I actually had the tahoe at the dealer for two days and they can't replicate the problem(transmissions was slipping so much that I was not driveable when I dropped it off). they even dropped the pan to look for metal and wear(which is how they found my 2nd failed transmission---at my request). the 1st and 3rd transmissions just completely failed with no warning signs--both within 5 mins of driving after start up. one of the techs even drove it personally for two days. I have it back and it seems to be running fine---for now. I wonder if it is a computer issue--the service 4wd did come on for a few minutes when it was running really badly. I will let the dealer know on monday what you had suggested(thanks)