Last post on May 02, 2011 at 12:02 PM
You are in the Pontiac Montana
What is this discussion about?
#2 of 21 Re: montana versatrak system issues [durden_970]
Jan 14, 2008 (7:13 am)
Fluid change is only the first thing to try for groan/moan, there may be another problem that needs correcting. I might wonder about rear whell bearing also, mine sounded different then front. Can you elaborate on when/how the sound happens? Low speed, high speed, turning, changing sound with speed, that kind of thing.
#3 of 21 Re: montana versatrak system issues [ray80]
Jan 14, 2008 (8:14 am)
Thanks for your reponse.....the dealer gave the van back to me on fri night they put some additive in the rear awd unit ..said it was fixed. I took it for a drive and brought it right back again . Groan/moan still there, It happens when turning tight corners at any speed. I know its not a wheel bearing or anything like that. When I took it back I got the mechanic to go for a ride, the one who said he didnt hear anything.... Just getting the run around until its off warranty...wait to hear what they are going to do today..
#4 of 21 Re: montana versatrak system issues [durden_970]
Jan 14, 2008 (8:36 am)
Well I can't say for sure of course, but when I had the moan/groan because of versatrak issue, it was typicly at low speeds. When I had rear bearing going out it was a slightly different noise then front, and was much more prevalant on tight turns, just ny experiance. Good luck
#5 of 21 Re: montana versatrak system issues [durden_970]
Mar 20, 2008 (6:08 am)
I just bought a 2005 Pont Montana SV6. When starting the message read AWD disabled, the lot I bought it from took it to a Pontiac dealer and they replaced a sensor in the rear diff and changed the grease. After getting it back it moans when making just about any type of turn at low speeds. Has anyone found how to correct this problem?
#6 of 21 Re: montana versatrak system issues [jramsey3]
Mar 21, 2008 (8:01 am)
This sounds a little confusing to me. Usually the sensor they might replace is a speed sensor in hub/bearing assembly and would require assembly replacement I believe The rear diff assembly requires versatrak fluid and not grease. If they changed that and for whatever reason didn't follow the correct procedure, or if there is a leak in the system, it could create the groan/moan thing. Did the moan start right after you got it back, or after some time?
#7 of 21 Re: montana versatrak system issues [ray80]
Mar 25, 2008 (7:26 am)
My mistake on my first comment on my Montana. After reviewing papers provided by the Pontiac dealership, they replaced a fluid valve in the rear diff $185.00 and topped off the Versatrak fluid $29.00. It was after this that the moan started. Probably because up to this point the AWD was not functioning.
After taking it back to the dealer they provided me with a memo they received from GM dated 2006 concerning the problem. (It addresses several different models-all Versatrak) It stated that the clutch packs in the rear diff will make noises/groans during parking lot turns due to excessive wear or dampness in the diff. It provided the steps to correct the problem. More or less it requires you to drain and refill the rear diff. Drive the van/vehicle a total of 20 minutes, 10 of which require a constant tight right handed turn for 5 minutes and then a constant tight left handed turn for 5 minutes at low speeds. (did not specify how to drive the other 10 minutes) This is the only way to flush/clean the clutch packs in the rear diff. After this has been performed drain and fill the rear diff again. It stated if this did not correct the problem then replacement of the rear diff would be required. The dealer I bought if from (different from Pontiac dealer) gave us the average 30 days 50/50 1000 mile warranty. He said he will pay for 1/2. The only bummer is that the fluid is 29.00 a pop and the process requires 8 bottles and 1.2 hrs of labor. I hate to do this to a vehicle I just purchased and has only 50,000 miles, but this is way cheaper than replacing the rear diff. I'm going to try to do the procedure this week and will post my results.
#8 of 21 Re: montana versatrak system issues [jramsey3]
Mar 25, 2008 (8:01 am)
That clarifies things better. Suggestion I might make is to do a visual inspection (after driving on dry day) to check for leaks and also check fluid level again as low fluid can also create the moan/groan condition. If that doesn't show anything then a fluid change may be in order.
#9 of 21 Re: montana versatrak system issues [ray80]
Apr 01, 2008 (3:33 am)
I made the fluid change GM suggested on my Montana versatrak. The parts guy cut me a deal and sold the fluid for $20 a bottle instead of $29. The moaning did not completely stop until I changed the fluid for the second time. My problem is solved for now, there is absolutely no moan or groan when turning. Another observation I made is that the AWD system engages more completely now, before when I put the van against a steep upgrade in my lawn the rear tires would never engage to the point of loss of traction. Now when I do this it will climb the grade until it powers out. My parents have a Buick (Rendovous-sp?) and my dad complained that the AWD moaned and would not engage when he was stuck (someone pulled him out). Could be that if your system is moaning it's not engaging enough to be helpful during low traction situations.
#10 of 21 Re: montana versatrak system issues [jramsey3]
May 14, 2008 (2:29 pm)
I hate to resurrect an old post but wanted to give my two cents from my experiences. I have a 2003 Venture with the AWD. I began experiencing similar noises around 50,000 miles. I took it to the dealership and they drained, filled, circulated, drained, and refilled the rear drive control unit with "new and improved" Versatrak fluid ($320). This did not stop the problem entirely, but quieted it some. Several months later I was back at the dealership again and this time the rear drive control unit was replaced ($2500). The cost was incurred by GM, and cost me nothing. The service manager went to bat for me which I am grateful. Apparently there was a manufacturer defect.
Just took the van back in 12,000 miles after the rear drive control unit was replaced because the noise was back. Had to go through the whole drain, fill, circulate, drain, refill process again ($422). Was told this time that this is a yearly service that must be done to prevent this noise not only in my van, but other vehicle which have the Versatrak AWD. The cost for normally replacing the fluid every 12,000 miles is approx $275 which the customer will pay. Needless to say, I am not happy with this additional yearly exspense and find this solution to a problem unacceptable. Apparently the issue with the AWD is not only with my vehicle, but other vans, and SUVs.
I plan on replacing the vehicle and for the first time in my life, will consider foreign vehicles whose manufacturers value the consumer more than GM. My issues are with the engineers who designed this system, and the policy makers at GM who will not take responsibility for and provide a cost effective solution (for the consumer) to correct a bad design or a known issue.
Additionally, I qualify for the GM family discount, so this can give you an idea as to how unhappy I am with them right now.
#11 of 21 Re: montana versatrak system issues [saxon802]
May 15, 2008 (9:33 am)
That doesn't sound right at all. If I remember correctly there should be a much longer service interval for the versatrak system. My vehicle was in for the groan/moan but it was due to leak and I had them replace the fluid anyway (at about 78,000 miles I believe). If you use it as a tow vehicle the fluid should be changed more regulary I think.