Today I noticed a hesitation or slipping of gears (1-2 or 2-3) while accellerating. When mentioned to the wife, she told me that is has become a daily event (05 XLR her daily driver).

Does any one know of a probable cause or a bulletin associated with this problem?

I've done a search of the Forum and found several "reverse" noises and "clunk" noises, but no success finding any reference to gear slippage.

To get this problem in perspective, I've posted the survey above. I'll be visiting my local Dealership by mid-week.

XLR KEN

XLR KEN,
Sometimes i see a difference in shifting but then again my driving techniques/habits change as well...sometimes i just cruise, start moderately, etc - other times i'm gunning it!!! I believe the change in gear shifting/slipping may be caused by the adaptive driving habit computer. If you visit other threads you can find the exact name of the computer module.
Just my two cents...
Darrell

i have the same problems with the geaR AS FROM 5 TO 4 DOWNGRADE WHEN YOU LEAVE THE CAR TO DECELRATE BY ITSELF AT 63 TO 65 KM/HR EXCATLY.....

I MENTIONED THIS TO AGENCY, BUT THEY COULDNT FEEL AS I USE TO FEEL....

Today I noticed a hesitation or slipping of gears (1-2 or 2-3) while accellerating. When mentioned to the wife, she told me that is has become a daily event (05 XLR her daily driver).

Does any one know of a probable cause or a bulletin associated with this problem?

I've done a search of the Forum and found several "reverse" noises and "clunk" noises, but no success finding any reference to gear slippage.

To get this problem in perspective, I've posted the survey above. I'll be visiting my local Dealership by mid-week.

XLR KEN

Ken, I haven't found a bulletin dealing with your concern. I haven't had any complaints like yours from other owners either. Have the fluid level checked. You may have a leak or fluid loss from the cooler lines during a radiator replacement. You can also check to see if it has the latest program for the TCM. After that it may be valve body related.

Bruce

Ken, I haven't found a bulletin dealing with your concern. I haven't had any complaints like yours from other owners either. Have the fluid level checked. You may have a leak or fluid loss from the cooler lines during a radiator replacement. You can also check to see if it has the latest program for the TCM. After that it may be valve body related.

Bruce
Bruce,

The following bulletins are a little weak in detail, but could they relate to "shifting" problems like I described:

Bulletin # 3392
Bulletin # 3091
Bulletin # 609

Look forward to any clarification. I've got an appointment with the XLR "Doc" on Wednesday morning, so I'll see what they say. I've had it in a few times when they would have had an opportunity to update, but I'll mention the TCM program revision just to make sure.

Ken

Our local dealer had the XLR for several hours yesterday and found nothing. The Tech, Service Rep and Service Manager all three test drove the car and none experienced the shifting problem.

Like any random or intermittent problem, it won't happen when they are checking it out. It is a "once per day" problem, so we'll just log when and under what conditions it is observed. If anything, we've baselined the concern and will monitor it to see if it gets worse or more frequent.

XLR KEN

its advicle to take note at wat speed or which gear it gets a problem... or sometimes early morning when u start a car, u going to feel more coz the fluid is still not warm up properly...

try to accelerate ur car till 90 km/hr then leave it..let it decelerate by itself..maybe u going to have that hard shifting.



just an opinion...

Hamad langawi

Question on shifting. This may be a old question, however when I start the car in the morning, put in reverse goes in gear nice, put in drive takes a few seconds before I can take off, just sits then goes in gear! Issume this is normal

No, I wouldn't say that was normal--off to the shop.

Floyd

Thanks I will, funny the dealer said it was normal when I purchased something about the computer is setting everything up and can put in reverse but when you put in drive it waits until all is ready?????? I understood it as like a computer booting up?

I've noticed the same problem for the past three weeks. I thought it might be low transmission fluid. the dealer says that the fluid is OK. I start in reverse with no problem. When I shift to forward there is a noticeable delay. Let me know if a bulletin comes out on this.

bumbleent

I agree with Floyd, there should be no hesitation. You have a problem regarless what the dealer says.
BoboThanks I will, funny the dealer said it was normal when I purchased something about the computer is setting everything up and can put in reverse but when you put in drive it waits until all is ready?????? I understood it as like a computer booting up?

Well, did what my fellow XLR partners recommend and brought it in to the shop. At the end of the day I was told that the software was not current and they downloaded the most current software and feel it resolve the void. I will be picking it up tomorrow, and the following morning will give it a try, more to come or hopefully not!

Well back from the shop with the new software upgrade and still no fix> back to the shop next week

Well back from the shop with the new software upgrade and still no fix> back to the shop next week

Sorry to hear that--but not really surprised.

Good luck!!

Floyd

My 04 had the same problem every mornig one time per day. The dealer tried everything and it never went away. I gave up and boufgt an 08 and that cured it.

My 04 had the same problem every mornig one time per day. The dealer tried everything and it never went away. I gave up and boufgt an 08 and that cured it.

What a great fix .... did GM put out a bulletin?? :glol

My 04 had the same problem every mornig one time per day. The dealer tried everything and it never went away. I gave up and boufgt an 08 and that cured it.

Did you "Lemon" it?

Floyd

No I did not...Because I am a lemon law arbitrator and I would had to drive a long way to another arbitrator that didn't know me.
The dealer made a deal that would have been the same.

Well, I am not getting a warm a fuzzy with a fix based on the thread. It is strange, once a day in the morning, not cold just about 55 or 60! California!!! Oh well, I will bring back in durring the week. All other shifting is fine

I don't understand what being an arbitrator has to do with lemoning a vehicle that by all rights you should have been paid every dime you spent on that vehicle less the mileage.
You could have not come close to a deal such as this by dealing with a dealer.
I lemoned an 04 and when all was said and done, It cost me $5,000 more for an 06-V
BoboNo I did not...Because I am a lemon law arbitrator and I would had to drive a long way to another arbitrator that didn't know me.
The dealer made a deal that would have been the same.

I drove my '05 XLR this weekend from Jacksonville to Orlando. I experience this around the 85 mph range. If I keep a non-constant single speed there does not seem to be an issue - however at intermittent times around 85 mph while I keep it steady it seems to 'slip' or 'bog'. When I get off the gas or back on the gas it goes away.

I am going into the shope tomorrow before a trip to Miami on Wednesday.

Update

Well did finally get back in the shop and I understand from the dealer that in fact a bulletin just came out on the not engaging in drive or a delay of more then 2 seconds, in my case 5. They once again upgraded the software today for this issue, which was issued for 2004 XLR (which is nine) and a few others like CTS. I will know in the morning as I take off to go to work!:nopity

Ok, well they said just came out, however as I look at old postings, looks like it came out in 2005? oh well, if it works it all dosent matter?

UPDATE: Well no mater when it came out, it worked! Very happy XLR dude!

Well, I am not getting a warm a fuzzy with a fix based on the thread. It is strange, once a day in the morning, not cold just about 55 or 60! California!!! Oh well, I will bring back in durring the week. All other shifting is fine

I'm seeing the same thing on my 2004. I can back out of the garage just fine, then put it in drive and there's 2-5 seconds of what I'd call a seriously slipping clutch if it was a stick. Doesn't happen below 40-45 degrees or much over 55-60. One time I wound it up to about 3000 rpm before it engaged -- so abruptly that it chirped the tires.

Dealer's never heard of this, and of course it won't happen for them. But I see it on first startup any day the temperature's in the range.

Update

Well did finally get back in the shop and I understand from the dealer that in fact a bulletin just came out on the not engaging in drive or a delay of more then 2 seconds, in my case 5. They once again upgraded the software today for this issue, which was issued for 2004 XLR (which is nine) and a few others like CTS. I will know in the morning as I take off to go to work!:nopity

Do we have a specific Bulletin Number for this?

Anyone? Ken, is it one of the three you mentioned earlier in the thead?

Thanks.

Do we have a specific Bulletin Number for this?

Anyone? Ken, is it one of the three you mentioned earlier in the thead?

Thanks.
Ben,

I'd have to refer the question about the three bulletins over to Bruce. I couldn't decipher them good enough to determine if they were applicable.

Also, under other thread, there was a new bulletin for a new fluid to take care of the "clunk" issue: http://www.xlrforum.com/showthread.php?p=29064#post29064

Ken

BoughtTheXLR

The only information I have is what is on the work order, however not sure if it will help. I don't have the bulletin number however it states, Reprogram PCM
Code 11Bc9

This did eliminate the problem on my 2004. Hope this helps

When shifting from 1-2 under fairly brisk acceleration, mine (05' XLR 40K miles)is making a "squeek" Sometimes it is barely perceptable over the sound of the engine. It is never very loud. Yesterday I had the top down, and it was much more noticeable. It doesn't do it all the time, but it doesn't matter if it is cold or warm. Anyone else have a similar malaise, or know what it might be?

i have same problem. On start up, goes into reverse ok, but when I put it in drive, it takes several seconds for the trans to engage. help please.

i have same problem. On start up, goes into reverse ok, but when I put it in drive, it takes several seconds for the trans to engage. help please.

I had exactly the same problem with my 04, on cold startups on cool mornings. I'd back out of the garage, and after shifting into drive it was like I had a stick with a badly slipping clutch. Dealer did a transmission software update and that solved the problem. I'd tell you the info from the service ticket, but I handed them off when I traded for an 08.