This is the Accelerator pedal correct. I ask because I've had some intermittent throttle probs. I think that they may have been VP44 problems and my truck died today. We think it is the VP but I am trying to eliminate everything. How do you reset the APPS? Thanks again

 

Heres what the tech facts say for the APPS reset:



APPS Reset Procedure
This procedure has shown to help 24 valve ISB engines. It is basically teaching the fly by wire accelerator on these trucks to reread the position of the pedal and it's limits. Most complaints this will help with is poor acceleration, improper shifting, bucking in 5 and 6 speeds. Has been known to increase fuel mileage in some instances.

1. Set parking brake
2. Disconnect negative battery cables on both batteries
3. Turn ignition key to run(to drain any remaining capacitors)
4. Let truck sit for 30 minutes( this is the recommended minimum)
5. Return ignition to OFF position
6. Reconnect both batteries and secure, not a timed event
7. Turn key to run position(not start) and depress accelerator pedal slowly all the way to the floor
8. Allow pedal to return to top position slowly
9. Turn ignition switch OFF
10.Release parking brake


This is in the tech facts menu under 24v engine and drivetrain. I hope this helps but if your truck died its possible its the VP. I dunno how the 99's are but i know on my 02 i can check for codes with the key on/off trick. I don't think 99's can do that but someone who knows more will chime in.
matt

 

Some 99's can do the codes with the key trick.

 

Thanks for the response. I can tell you my '99 doesn't do the codes in the cab though.

 

I'd go to your nearest autozone, have them plug in their scanner to your truck and read the codes for you. I know the one in my town will do this for free. Or if you have a friend with a scanner you can use it too.
matt