I Have a 2007 GMC Acadia that has an intermittent Stabilitrak warning. It only illuminates the trouble light when slowing or going downhill...going uphill or level is OK
All fluid levels seem to be full...Power Steering, Transmission, Brake Fluid, and Xfer case. This seems to be a fluid level issue or a inertial sensor since it seems sensitive to the orientation of the car, which also coincides with the inertia...going downhill or braking provides the same sensation, as does going uphill or accelerating. On level driving it is usually OK, although in western Pa there isn't too much level roadway. I'd rather see if I can find a fix online than pay $1000 for a dealer's easy fix. Any ideas?
In addition, the check engine light comes on but has been doing this for years. The engine codes usually indicate an O2 sensor, nothing about the stabilitrak or traction control (which also shows up in the trouble message).
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Coolant--Check the radiator coolant level in the reservoir.
Battery-- Visually check battery cables and connections.
Automatic transmission--Check the fluid level.
Master cylinder--Check the fluid level.
Power Steering--Check the fluid level.
Windshield washer--Check the fluid level.
Belts & hoses--Visually check all belts and hoses for wear.
NOTE: In addition to the items listed above there are cases with some manufacturer's where odd components such as manual transmission/transaxles and front differentials many be equipped with a dipstick found underhood for fluid level check. If you are unsure of a dipstick on your vehicle, check with the owners manual.
first of all power steering uses power steering fluid and the transmission uses transmission fluid, check both the power steering fluid level and the transmission fluid level and fill to proper levels with proper fluid
Checking the power steering fluid level at least once a month is a good idea, since as components in the high pressure system wear out, the possibility of leaks increases. Always stay alert for changes in steering wheel operation. If you suddenly find it hard to turn the wheel, check the steering fluid immediately.
Step 1:Apply the parking brake and place the transmission in "Park" (automatic) or "Neutral" (manual).
Step 2:Check the level of the steering fluid in the reservoir. If your car is equipped with a see-through plastic tank, compare the level with the markings on the side the container. Other systems are equipped with a dipstick inside a plastic tube, or have a dipstick mounted on the reservoir cap.
Step 3:Pull the dipstick or remove the reservoir cap, and wipe the dipstick with a clean shop rag. Insert the dipstick or replace the cap and remove it again to check the fluid level.
Make sure the level is within the crosshatched area on the dipstick or at the "Full" mark. If necessary, add steering fluid.
Place a small funnel or a funnel with a flexible hose on the dipstick tube or reservoir opening to add fluid.
Hope this helped your troubles!
A fluid leak that is pink and/or red colored is usually either power steering fluid or transmission fluid. I recommend checking both. You can check the power steering fluid when the car is off. However, the transmission fluid should be checked with the engine warm and idling in neutral. Have someone else step on the brake or use the parking brake and block the wheels while you're measuring the transmission fluid level.
Power steering fluid - Dexron 2 or 3 automatic transmission fluid. Yes transmission fluid. And while you are at it check the fluid level in the transmission.
Since you got the hood up, check the brake fluid, wiper fluid, radiator fluid, battery fluid, oil level.