Question about 2003 Chevrolet Silverado 2500HD
The error code PO840 is for the trans fluid press sensor. Where is this sensor located?
Posted by Anonymous on
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Posted on Jan 02, 2017
Here how to do it: If you see no signs of leaking from the transmission then the level is probably not low, take it to a transmission shop, transmission repair on this car is not for the DYI.
Ensure that the transaxle case temperature is 70° to 90° F (21° to 32° C). With the engine running, shift transmission through all gears. With engine idling in PARK, remove the check plug from the transmission. If transmission has been overfilled, allow fluid to drain out. If no fluid drains out, add fluid through the TRANS FLUID fill cap under the hood on the driver side in 1 pint (0.5 liter) increments until it slightly flows from the check plug. Reinstall the check plug.
Posted on Jan 31, 2009
your engine doesn't have a MAP (Manifold absolute pressure) sensor it has a MAF (Mass Airflow) sensor, that is located in the air intake hose to the throttle body of the intake.
Posted on Jun 08, 2009
Knock sensors as a rule of thumb are positioned right beside a piston on the the block. It should be on the opposite side of the exhaust system. A knock sensor is actually a sensitive microphone or listening device. It listens to a piston performance under load. If it hears a knocking or pinging sound it will ****** the ignition timing and advance it again when condition changes. It would have a securing bolt in the middle which torqued to a certain spec and a single wire harness.
Posted on Mar 14, 2010
Under intake manifold on top of block,you need to remove intake to access sensors there are two of them you can't miss them when intake is off. After replacing sensors you need a new intake gasket.
Posted on Apr 04, 2010
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