Question about 2004 Chevrolet Impala
As for the first problem it could be a speed sensor in the transmission. Do you have a check engine light on? You need to drive it with a scanner on it to check the speed sensor. If the sensor is reading fine but the speedo doesn't read right you likely need to replace the cluster. As for the second problem, this is a common one on the 4t65E trans. You need to replace the Transmission Pressure Control Solenoid.
Posted on May 22, 2011
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Posted on Jan 02, 2017
IF YOU REMOVE INSTRUMENT CLUSTER AND UNPLUG IT,PLUG IT BACK IN AND UNPLUG IT AGAIN..DO THIS A FEW TIMES..IT SHOULD CLEAN OFF SLIGHT OXIDATION ON CONNECTOR TERMINALS..HAVE SEEN THIS BEFORE..I ALSO THINK REPAIR CONNECTORS AVAILABLE FROM DEALER
Posted on Jun 21, 2009
I agree with philipk and I might consider a different shop since separating the level sender from the gauge isn't rocket science and only requires a basic meter to check the integrity of the sender. If it checks bad, it will still cost a bit of labor (the sender isn't expensive; <$50 US) but since it is located inside the gas tank and is rarely removable without dropping the whole gas tank, expect some labor costs. The cost of replacing the instrument cluster would be far greater though if the sender checks out OK.
Posted on Aug 21, 2009
Testimonial: "thanks for your help. nice to go into the shop armed with some info! "
There has been issues with the solder joints on the PIN connection to the gauge cluster. The issue being that over time thru vibration and such one of these solder joints will fail (happened on or 1999) you can repair this though. You will have to remove all of the trim from around the driver's side dash board, this will include the trim towards the center of the dash. Once these pieces are remove you'll need to remove the gauge panel (I believe (4) allen head screws) carefully bring the panel and release the wire clip from it. Looking at the back of the panel, where the plug was, carefully with plenty of light look for one of the pins to have a failed solder joint. It will be very faint however the failed joint will be a fine dark line around the pin. To correct use a small soldering iron and reheat this solder until it wants to flow, let it cool and reassemble.
As I fore mentioned I had the exact same issue as you are describing, our is a 99. The most tricky part is the dash, take your time with it.
I hope this may have assited you,
Posted on Oct 18, 2009
There is a vehicle speed sensor on top of the rear differential, this sensor is also for the anti-lock brakes. Sometimes you just remove it and clean it (it's magnetic) and may start working again otherwise you have to buy new. Yes, this sensor will affect the trany shifting.
Posted on Nov 09, 2009
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