Originally Posted by Jordan Y.
Timing belts are every 60k on our 4G63 stuff. Unless it's different on your 4G64 that doesn't seem to match up. Is that thing an interference engine? If not I wouldn't even worry about the timing belt, but this light might be a good sign to waste a few hours and a few bucks at discount to replace some hoses/belts/plugs/wires/distributor cap/ etc, whatever catches your eye as a likely candidate.
I picked up a haynes manual. Its mainly acutally for the emissions and and 02 sensor acutally.
This truck had pretty much all the normal items replaced before I bought it, so anything short of tranny or engine failure, im good for another 2 years.
To reset it, theres a little switch hidden behind the guage cluster you just switch back.