Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN









98 chevy truck wont shift, tach and speedo not working


  Email This Post



radamk
New User

Sep 8, 2009, 12:02 PM

Post #1 of 4 (5252 views)
Shortcut
98 chevy truck wont shift, tach and speedo not working Sign In

I have a 98 chevy k series truck, V6, 1/2 ton 2 wheel drive, automatic transmission with 271000 kms. The speedo and tach does not work, and when you drive the vehicle down the road it is sluggish to start accelerate because it will not shift down to 1st. eventually when you do get going it will drive properly aside from the fact that it will not shift. Sometimes the speedo and tach will work but is very eratic. I have taken the transmission pan off to see if there are any parts and to see how the oil is and there was nothing to find. i have a few codes that have come up that include shifter A and B, shift control module. I have been told to check wire connections which I have yet to try. Also checking the speed sensor on the tailshaft of the transmission was also suggested which I have to try yet.


Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Sep 9, 2009, 3:09 PM

Post #2 of 4 (5220 views)
Shortcut
Re: 98 chevy truck wont shift, tach and speedo not working [In reply to] Sign In

radamk; The transmission shifting depends on the VSS (vehicle speed sensor) input. Take the suggestions you've been given.
Loren
SW Washington


radamk
New User

Sep 18, 2009, 4:20 PM

Post #3 of 4 (5205 views)
Shortcut
Re: 98 chevy truck wont shift, tach and speedo not working [In reply to] Sign In

I replaced the speed sensor which did improve my situation. But it is still eratic where I can drive for a little ways and the tach and speedo wont work right away but when they kick in they work fine but it still does not shift properly but I can shift the gears manually all except overdrive which seems like it is never there lately


JimJ
New User

Dec 6, 2009, 4:06 PM

Post #4 of 4 (5124 views)
Shortcut
Re: 98 chevy truck wont shift, tach and speedo not working [In reply to] Sign In

I have a 97 doing the same thing.I changed the instrument cluster but tach and speedometer still doing same thing.I checked the power fuse on the side panel for PRNodDL lites and looks like low voltage to it.I can turn key on and they lite up but go out when i start up.Like you i have to manually shift but onle have 2nd and Drive.Sometimes it will jerk and tach and speedometer works but still won't shift right....I HOPE someone can give an answer.Could get expensive replacing parts without knowing..Thanks




Advertising


  Email This Post
 
 






Latest Forum Post

I have a 12v solenoid with the standard two large terminals and it has TWO small...


Hey everyone. I've got my great 84 VW Jetta. It's my first car and while I've ...


hi, my engine still runs after i turn the key off then dies after few seconds, w...


Hi Everyone, I have a 2000 Oldsmobile intrigue that when I turn it on the brake ...


I apologize I have not got a lot of time in it so far, so I do not have a lot of...


I have a 1992 ford ranger 3.0l v6 5 speed. today i ran out of gas and when i got...


Feed Button






Automotive Forum Categories
AC Auto Repair
Auto Body Repair
Auto Insurance
Automotive Repair
Automotive Wiring
Automotive World
Brake Systems
Car Care Tips
Car Racing
Car Shows and Events
Car Stereo Repair
Car Troubleshooting
Engine and Car Noises
Engine Fault Codes
Engine Troubleshooting
Exhaust System Repair
Gasoline and Motor Oils
General Discussions
Motor Vehicle Inspection
Motorcycle ATV Repairs
Motorcycle Body Repair
Motorcycle Clutch Repair
Motorcycle Engine Repair
Motorcycle Repair
Motorcycle Seat Repair
Remote Control Cars
Steering and Suspension
The Bargin Bin
Traffic Ticket Help
Tricks of the Trade
Truck Repair
Truck Repair Advice
Truck Engine Repair
Truck Suspension Repair
Car Forum - Sitemap


Search for (options) Privacy