ENG 1 - 20 amp fuse - under hood fuse Box . This fuse powers the O2 sensors heater circuits , Emission - purge an vent solenoids , mass air flow sensor , camshaft position sensor an A.I.R. intake recirculation relay - if your vehicle has it , L31 only
I would look for wires for o2 sensor melted on a exhaust pipe or manifold . Isn't your check engine light on ?
SOURCE: Transmission problems with a 2002 Chevrolet Silverado 4X4.
Fastboyz is on track with his answer.there are quite a few updates on your transmission for shift concerns. this is done with a tech2 scanner and reprograms computer. also if you have installed larger tires this will need to be updated. can cause problem also.Just because there is no trouble code does not mean it is not a computer related problem. have it checked for updates
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: 99 silverado will not shift into overdrive
First thing, check your fuel filter and your CAT. if either is clogged you will get that problem.
SOURCE: 1986 Nissan 720 4x4 pickup truck. Speedometer
Either the gauge is bad, the cable is kinked or the speedometer connector is bad...at the tranny.
SOURCE: 1994 chevrolet Silverado 4x4 with the transmission slipping
It will work but you will have to modify the crossmember and driveshaft and the computer. The 4l60e is an easy trans to recondition
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