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We have a 2009 Montana SV6 that we bought brand new (off the dealer lot) and it's been great. Before buying, I did lots of research and picked NO options to eliminate the hassle of future problems. After buying, I added a few DIY upgrades to eliminate future problems as well.
For example:
- Picked with "manual" sliding doors. Power sliding doors have high risk of failure and I kept reading their sensors are too delicate as well. Thus, I went with manual sliding doors. Yes, the older KISS design.
- Standard rear shocks. Self leveling shocks with onboard air compression have high risk of failure. Thus, I went with normal rear shocks. Yes, the older KISS design.
- To "beef up" its rear suspension (without using air product upgrades), I bought/installed 3rd party Timbren SES units. These are chunks of rubber that fit within the rear coil springs. Being a pure mechanical product, no risk of air leak or air compressor failure. If wondering, I installed these chunks of rubber myself. Very simple DIY install.
- Installed my own Transmission Cooler (Hayden @ 5,000 lbs). My transmission service guy says the SV6 transmissions run hot (even if NOT towing things). Thus, why I installed my own 3rd party Aux tranny cooler for connected 5,000 lbs trailer. No worries, I don't pull trailers over 2,500 lbs. And, I might pull a trailer 3 times per year. The 5,000 lbs aux cooler was used to create extra cooling ability - especially during hot blistering summer days. As known, tranny oil likes to keep cool as well.
- Removed its front hood - under side foam corner blocks. This allows hot engine compartment air to escape out the side of the hood. Cooler engine compartment means lower running temps. Especially for the 3.9L engine - that likes to run hot anyway.
- If wondering, our van gets rust proofing spray every late fall. The van has thin metal and reducing risk of rust is a good thing.
- We also got factory remote starter as inclusion during its initial buy. Great option to have. Especially in my snow/ice region.
- We also got included side curtain air bags - since extra safety is good thing as well.
- I added my own 3rd party front hood wind deflector - to help save the front hood paint. And, this front bug guard helps me better judge its front bumper distance position.
- Also bought/installed 3rd party window rain deflectors as well. This allows us to keep the front windows down 1" during hot blistering summer days - without worry of water entry from sudden heat flash thunder storm. And, having 2 x windows down 1" does keep its insides cooler as well. As you guessed, these vans have hot insides and love to breath - to keep cooler. Especially during hot blistering summer days.
For my region, we also bought extra set (set of 4) steel rims and snow/ice tires. The deep knob snow/ice tires are must have in my region. Normal all season tires during winter in my region are near useless. If you have this van and live in snow/ice region, definitely get deep knob winter ice/snows as well. This upgrade is well worth it.
Since we bought new in spring 2009 (when a few GM dealers were closing in my region), we got its battery replaced under warranty (within 3 months of usage) and got one of its 1 x key FOB device replaced as well. Other than these minor warranty replacement things, our SV6 van has been running great. It starts easy, no weird sounds and it runs cool. Since we drive it like we want to keep it forever, I assume it will treat us with respect in the long run as well...
For us, our SV6 van has been great. It starts, it treats us with respect and we treat it with respect as well. So far, good buy for my family.
Hope this helps in your research...