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Pontiac Montana Transmission Problems

59 messages,  Last post on Nov 23, 2009 at 7:24 PM

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What is this discussion about? Pontiac Montana, Pontiac Montana SV6, Van

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#47 of 59 1998 Montana, no forward or reverse by brm5114 Sep 13, 2008 (12:46 pm)
I was about 100 miles from home. Had been running fine for about 30 minutes, all of a sudden tach ran up and trani was in nuetral. Pulled over and tried all gears..nothing! Let it cool down, tried again ..nothing. Had it towed home, dropped pan and drained old fluid. New filter & fluid..still nothing. Shift linkage is good. Check engine light had come on a week before..latest code # P1870 "transmission component slipping". Car has 199K but engine still running well. Any chance this is something simple & inexpensive? Anyone experience the same? Replies to this message: kennie (Feb 12, 2009 3:16 pm) shampooguy (Mar 29, 2009 5:22 pm) kennie (Mar 30, 2009 9:18 am)
#48 of 59 03 Montana by soulman613 Sep 15, 2008 (4:57 pm)
Hello every body 2 Problems - 1 : Driver side window power switch burns every time.                     2: late kick - shift change- 2nd & 3rd Only..   When It passes 60km/h speed it runs well but when you stop & move that's when the kick and shaking noise come.   I had a year and half & still driving because it's very expensive to change the Tranny which a lot of people said is the issue.   Any help would be appreciated.   Thanks in advance. Soulman Replies to this message: brm5114 (Sep 15, 2008 7:26 pm)
#49 of 59 Re: 03 Montana [soulman613] by brm5114 Sep 15, 2008 (7:26 pm)
Replying to: soulman613 (Sep 15, 2008 4:57 pm) The power window switch for the driver side is wired in series with the switch for the passenger side. One of the two switches may be shorted. If not, suspect the power window motor.
#50 of 59 2000 Montana - Transmission Hard Shifting by kennie Feb 12, 2009 (3:16 pm)
Replying to: brm5114 (Sep 13, 2008 12:46 pm) Well guys, transmission problems hea? You are not alone. I have a 2000 Montana which started acting up just over 1 year ago and currently have 150k. It's the same observation as most montana's with trany trouble: error code slippage, hard shifting, turn off engine to reset codes and runs ok until it slips again a few times and then back to hard shifting, wineing noise when in hard shifting mode. Did research and most often it is one of the selunoids (sp?) inside the transmission (there are pictures of a worn one on the internet). Anyway, quote is around $2750 to have the transmission replaced - if to speak to low-cost or any transmissionn shop that works with montana's they will have a refurbished transmission ready to install in their rack - most shops suggest that it is not worth the time/effort to take apart and diagose and risk missing components that need changing out that brings up the bill anyway. For city driving i'm planning on just letting it die then replace it but taking it easy on the peddle when shifting as it is hard on the engine if your flooring it when it is doing this. Unless anyone has any success stories where a shop has taken appart, replaced all parts (do a proper job) and put back to gether for the same price as a new one or a re-built one then i'll probably just stick it out a little longer unless someone can convince me otherwise... Replies to this message: shampooguy (Mar 29, 2009 5:22 pm) kennie (Mar 30, 2009 9:18 am)
#51 of 59 transmission slipping 99 montana by kdufour Mar 14, 2009 (5:02 pm)
my transmission slipping on my 99 Montana i changed the oil and filter but once it warmed up it was skipping down the road, it would shift it gear OK now with new oil but still was skipping. almost like the engine was misfiring but its the transmission. any ideas.
#52 of 59 Re: 2000 Montana - Transmission Hard Shifting [kennie] by shampooguy Mar 29, 2009 (5:22 pm)
Replying to: kennie (Feb 12, 2009 3:16 pm) I had the same issue with my '05, hard shifting after 10 minutes of driving. I researched it on automotiveforums.com, and there was a member there that installed a $30 shift kit from zzperformance.com on his van, and it stopped the hard shifts. I did the same, flushed with Dexron VI fluid, and all is well. Replies to this message: kennie (Mar 30, 2009 9:18 am)
#53 of 59 Re: 2000 Montana - Transmission Hard Shifting [shampooguy] by kennie Mar 30, 2009 (9:18 am)
Replying to: shampooguy (Mar 29, 2009 5:22 pm) VERY curious about the 'shift kit' you instaleld... can you tell me more about it, where I might find it, how you installed it, how long it took and what you think it actually does? Thanks !
#54 of 59 Re: Hard shift sometimes [pacecar68] by triplezero1 Jul 25, 2009 (3:06 pm)
Replying to: pacecar68 (Jul 18, 2008 9:28 am) Hi, i have a 2000 Montana with 35000 miles with the very same problem you have have you herd of a fix for this or what the problem might be ? Replies to this message: spike99 (Aug 02, 2009 8:30 am)
#55 of 59 Re: Hard shift sometimes [triplezero1] by spike99 Aug 02, 2009 (8:30 am)
Replying to: triplezero1 (Jul 25, 2009 3:06 pm) For some good info on why the 4T65E transmission known problems, surf:   http://www.tripleedgeperformance.com/4T65E_Transmission_Info.html   On a different forum, a person installed a "shift kit" and his van's transmission shift slippage was eliminated. Using Google, search for "4T65E shift kit" and lots of info appears. Well worth searching this area as well...   Also... My local transmission specialists recommends transmission ATF aux cooler (rated for 5,000+ lbs trailer) be installed on all GM 4T65E transmissions. Even if van is only used for "soccer parent" (and non-Towing) driving conditions. From his experience, the 4T65E does NOT like heat. Especially from city stop/go city driving on a hot day conditions. He told me the LPD (Low Pressure Drop) aux transmssion design (like Tru-Cool and Hayden brands) are the best.   If wondering, I installed the Hayden LPD aux cooler on my '09 Montana van. Cost me under $150 (CDN dollars) in needed materials. And, I installed it myself - to keep the cost even lower. re: http://www.makcotransmissionparts.com/OC-1678.html   Hope this helps....   .
#56 of 59 2004 to 2000 swap by dwayne8 Nov 17, 2009 (11:54 am)
My tranny went out in my 2000 van. I bought a used tranny out of a 2004 and installed it. The man said it would bolt right up, It did. But it will not shift into overdrive. Does this transmission take a different computer? I noticed the plug to the tranny has more pins than the original. Any thoughts? Thanks Dwayne Replies to this message: disapointed1 (Nov 17, 2009 6:44 pm) spike99 (Nov 19, 2009 3:51 pm) disapointed1 (Nov 23, 2009 7:24 pm)

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