Truck wont start?

Try attached security relearn procedure.

Here is 1999.

Ok lowering you truck should not have cause anything to go wrong. Now what I need to know is one how old is the fuel filter? I also need to know what fuel pressure do you have? If you do not have access to a fuel pressure tester then you can do this. Get a rag and a small screwdriver. Find the fuel shradder valve (looks like a tire valve) on the fuel rail. Now depress it slowly (there should be pressure here) and see if you get fuel from it. It should have pressure so be carefull so you don't get it in your eyes. Now if there is no pressure or little pressure then crank the truck over and check again if it don't change then I would recommend fuel pump and strainer and fuel filter. Your fuel system shoud have 40 to 47 psi of fuel pressure. Let me know what you find.

Do you hear the fuel pump come on as you crank it? If not then we need to check to see if the fuel pump is getting power. When the fuel pump went it may have blown the fuse or the the fuel pump relay and with a digital multi meter we can check that. So I need you to check the ECM B fuse it is a 20 amp this powers the fuel pump relay if this is good then check the gray wire at the fuel pump make sure there is power there, keep in mind when you turn the key on you will only get power there for about 3 seconds so you may need to crank it a few seconds. If that is good then check the black wire (inside the left rear frame rail) for a good ground. If the gray wire at the pump has no power then I would suspect that the fuel pump relay but before just replacing it you will need to check the green wire with the white stripe at the fuel pump relay for power while cranking. If there is power there while cranking then replace the fuel pump relay. Let me know what you find.

You're using starer fluid and still won't combust -Check for spark

Also you mentioned-a check engine light on
Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.

Slow cranking speed, extended cranking time, dtc p1626 technical service bulletin reference number(s): 87-65-21, Ã date of issue:Ã august 13, 1998 related ref number(s): 87-65-21 article beginning subject slow cranking speed, extended cranking time, dtc p1626 p1626, hard starting (reprogram pcm) condition some owners may comment about intermittent slow cranking speed and extended cranking time or may describe the condition as hard starting. Some owners may also comment about a vehicle security light that stays on through one key cycle after an extended crank event. Cause the pcm may be induced to synchronize incorrectly during key-up and cranking. This will cause subsequent ignition events to be mis-timed creating a situation where the starter is working against an ignition event. If the vehicle is keyed down and another starting attempt is made, the engine may start normally. Correction reprogram the pcm with the revised calibration that takes into account the above conditions. These calibrations are available on 1998 cd-rom 12 and later versions. Service procedure 1. If the customer has a concern with slow cranking or any of the other conditions noted above, connect a tech 2 scan tool and note the calibration id currently in the pcm. 2. Reprogram the pcm with the new calibration number listed in the table below. 3. Operate the vehicle and check for any additional slow cranking concerns. Models: 1998 chevrolet and gmc "s" models 1998 isuzu hombre with 2.2l engine (vin 4 - rpo ln2)4. If the vehicle still exhibits a slow cranking condition, use appropriate service manual diagnostics to correct the condition. Calibration numbers use the correct calibration from the list shown in fig. 1. Fig. 1: calibration numbers table warranty information for vehicles repaired under warranty, use: warranty information labor operation description labor time j6355 prom-reprogramming 0.4 * diagnosis time may be claimed for 0.0 to 0.3 hours depending on actual time performing diagnosis.
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5/11/2010 .

I'd check feed to and from the ignition switch.

Use a digital multimeter across battery posts, have helper turn key to crank. How far does the reading drop? Generic info says it shouldn't drop below 9.6 volts. The starter motor, cranks ok?

Scan for codes and check fuel pressure with a gauge first, auto parts rent it 41-47 psi key on engine off