SOURCE: 2003 chevy silverado will not shift into drive or overdrive.
transmission shift solenoid is stuck open this is a common vehicle issue in automatics and not particular to any make or model vehicle 15 dollar part and arm and leg for labor if taken in
heres an idea to try
take out the transmission filter and replace with new one make sure to take not of any metal debry in trans pan this indicates the trans had sheered its gears down and a trans rebuild is needed
the transfilter needs to be changed at a certain milage interval they can get clogged up
there is a kit you buy for your truck at any parts store
its an easy change hour of time unbolt trans pan unbolt trans filter and put new one in
kit comes with new seals less than an hour you can do it yourself
to overdrive you would feel a difference in shift badley if it was that something to keep in mind
SOURCE: 03 silverado neutral safety switch
possible but it can also be a range selecter switch problem. any work done on vehicle lately? pleas respone and i will try my best to help thanks.
SOURCE: 1995 Chevy S10. The transmission (4L60E) has been
Imput drum is built incorrectly or bad imput drum. trans assembled correctly, put on trans x and if trans does not operate correctly I will ship you one for $1000 www.TransmissionGarage.com
SOURCE: transmission shifts from 1 to 2nd just fine shifts
Check the transmission fluid level to make sure it's at the proper level. Have a transmission shop determine with a scanner that if it's your 3-4 solenoid or the wire harness has gone bad and will need to be replaced. You have a 4L60E transmission and this is common if your Throttle Position Sensor (TPS) is faulty and needs to be replaced, easy fix, just replace the TPS on the throttle body. Your Electronic Pressure Control valve EPC is faulty due to dirt from dirty transmission oil and filter, or the solenoid has gone bad or the wire harness on the passenger side by the catalytic converter has gone bad from corrosion or loose. Try disconnect the wire harness on that side and cleaning it out with break parts cleaner and reattaching it to see if that helps before you drop the transmission pan to get to the solenoid. The solenoid is around $45.00 and take about 10 min to replace once the transmission pan is replaced so this should cost around $150.00 repair with the oil and filter replaced also have them replace the boost valve "$45.00" with a 0.490" boost valve to bring up the transmission line pressure to help you get more life from your transmission and should be replaced every 60,000 miles as a part of the transmission service. Good luck and keep me posted, be glad to help you get your transmission running 100% again soon.
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