Question about 1999 Chevrolet Lumina
I have a '99 Chevy Lumina 3100 V6 with 54k miles. There is a high- pitch buzzy whine that changes pitch with engine RPM/transmission speed. I removed the serpentine belt and drove it briefly - the noise is still there without the belt. So it's not the power steering pump, alternator, H20 pump or belt tensioner. Transmission has had regular service, and shifts smoothly in all gears. The noise is only evident while moving (forward or reverse) above 5 mph. There is just a slight raspy "scraping" noise in park or neutral, which becomes almost undetectable when shifting to drive or reverse with the brake still applied.
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Posted on Jan 02, 2017
check fluid level, make sure proper fluid is in transmission otherwise take to trans shop to diagnse if level and type is correct(check at idle normal operating temp)
Posted on Oct 21, 2009
SOURCE: transmission will not shift
Check the Vehicle Velocity Sensor (V V S)-(Speed Sensor) or the wire harness to the VVS. IF the ECM is not getting a signal from the V V S, the PCM can not give the signal to switch gears. The V V S is on the drivers side of the end ot the transmission that is held on by one bolt. Best thing to do is to have the truck scanned at Auto Zone for a DTC code and to confirm that the V V S has gone bad and they can give you the step by step instruction to replacing the sensor and takes about 15 min to do. Good luck and keep me posted. Keep an eye on the transmission fluid, make sure you don't run the transmission to hard and burn it out over a $40.00 sensor which is better then $1,800 for a transmission replacement.
Posted on Jun 22, 2009
Your transmission is the most popular you have a 4L60E,or a 4L80E just giving you the identification so you can price a reubuild or remanufactured, no reverse, noise ? you have a internal transmission failure,mechanical
Posted on May 04, 2011
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