Dealer said bad valve on transmission changed blew out vacum lines same problem a/c ok but can//t switch to defrost or floor floor and defrost or just floor
Is this a 4x4? If so, vacuum switch on top of the transfer case and any HVAC parts that are damaged. That might be the part they replaced for you. Is there a hiss coming from the dash controls? If so, you will need to replace the mode switch with one from a junkyard. Otherwise you have to buy the whole control unit. I think it's about $65 bucks from Amazon. Probably $165 from the dealer. Here is some info on an older truck in the link. GMC Sonoma Chevy 10 Transfer Case Vacuum Switch
SOURCE: oil specification for 2008 chevrolet cobalt manual transmission
ask the dealer what kind of fluid they use or let them do it.wont cost much and maunal trans should be fine for at least 100000 km
SOURCE: transmission
Yes it does matter. Remember your filter is a screen that the oil flows over. If it is clogged it will not allow clean oil past it and to some extent will be like you are low on oil or high if the oil can not flow.
Change the filter and look for metal deposits in both the fluid and the filter. Minute shavings like sand or smaller is normal as long as there is not a lot. If you see a lot or see big particles then gears have been ground and you are looking at trouble. Get fixed early. Otherwise if filter is clean and fluid is fine and tranny still does this they make additives for tranny's to help with slipping. I use tranny medic. Follow the directions as you will need to drain some of the fluid out. Also do not add to your tranny unless you have met or exceeded the mileage specs on the bottle of the tranny medic. Hope this helped.
SOURCE: brake pedal goes to floor
there is still air in your hydraulic lines somewhere bleed the system with a pressurised power bleeder and you will get instant results
SOURCE: oil change resulted in $2000 quote for extras
The dealer is changing the hole fuel sending unit where as NAPA is sell you the replacement part to the fuel sending unit. The fuel sending unit has different components and can be replaced, GM Dealers will always replace the whole fuel sending unit and not service the fuel sending unit. Good luck and hope this helps. keep me posted,, be glad to help.
SOURCE: Trailblazer 2002, trans vent hose discharges some oil
This is not an issue, if the transmission was even a little bit over full, or got pretty warm pulling something it will blow a little out the vent. It's going to continue to drip until the excess oil is gone, but it won't hurt anything, other than staining your concrete.
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