For some reason or another... sometimes my truck won't shift into 4 wheel drive. I turn the switch and nothing, no light and you can't feel it engaging like I usually can. Other times, it works just fine... just not when I need it to. Just wondering in anyone else has this problem, if it is something I can fix myself or if I need to make a trip to the dealer (have a few things that need to be done under warranty anyway).
Any info would be greatly appreciated.

------------------
2000 F150 Flareside Super Cab Lariat
Black w/Grey Leather
15% Tint
5.4L Triton V8 3.55LS
4x4 ORP
Jet Chip
Borla Exhaust
K&N Air Filter
ARE Z Series
Penda Liner Pro
PIAA 9007 Platinum Super Whites
PIAA 980 Dual Lamp
PIAA 520 4x4
Billet Grill
Pioneer DEH-P920R CD Head Unit
Pioneer CDX-P670 Changer
Pioneer GM-X742 Sub Amp
Pioneer GM-X944 4ch Amp
Pioneer TS-C603 6 1/2" Components
Pioneer TS-E1690 6 1/2" 3 ways
JL Audio 10" Stealth Box
Manik Brush Guards
BEL Remote Radar/Laser Detector
Blue Interior Neon
Illuminated Ford Emblems
NR Automotive White Face Gauges
Ventvisors
Bugflector II
Zenetti 18" Vega wheels
TOYO Proxes S/T 285/60/18

 

TUFFORDJR,

same thing happened to me. Had it at the dealer last week, they replaced the GEM module...

also see:
https://www.f150online.com/f150board...ML/000734.html

Good luck!

 

Tufford, I would go ahead and take it to the dealer, sounds like something is wrong. My friend and I both have the electronic shift and have never had a problem, knock on wood.

 

One thing I noticed is that if I stop and put the truck in Park... then it works fine... but then whats the point of shift on the fly??? At what milage did yours go bad??

------------------
2000 F150 Flareside Super Cab Lariat
Black w/Grey Leather
15% Tint
5.4L Triton V8 3.55LS
4x4 ORP
Jet Chip
Borla Exhaust
K&N Air Filter
ARE Z Series
Penda Liner Pro
PIAA 9007 Platinum Super Whites
PIAA 980 Dual Lamp
PIAA 520 4x4
Billet Grill
Pioneer DEH-P920R CD Head Unit
Pioneer CDX-P1270 Changer
Pioneer GM-X742 Sub Amp
Pioneer GM-X944 4ch Amp
Pioneer TS-C603 6 1/2" Components
Pioneer TS-E1690 6 1/2" 3 ways
JL Audio 10" Stealth Box
Manik Brush Guards
BEL Remote Radar/Laser Detector
Blue Interior Neon
Illuminated Ford Emblems
NR Automotive White Face Gauges
Ventvisors
Bugflector II
Zenetti 18" Vega wheels
TOYO Proxes S/T 285/60/18

 

30k it started to actup. I had the same issue. If you need to recap and see exactly what was happening on mine, check the link I posted up above...it's too long to retype
Dealer found codes for the GEM that related to the electronic 4x4. Also remove your computer chip before you bring it in..again see the link for the explaination...
It's a dealer visit issue...