How to replace airconditioner pump on a 2002 chevy zr2 will not disengage any suggestions

1. check fuses
2. scan it
3. RTM

read the manual on 4wd controls

https://eautorepair.net/Marketing/Default.asp

Does it have spark at the spark plug's ?

Check if you are getting spark .

Well your mechanic he is not a proper mechanic as i would make one ,failing which shop around scrappers or a few hydraulic repair shops who will have the tools to repair or make you a new one which your so called back street mechanic should know about.sounds like you need to find a proper qualified mechanic instead of a dealer type of semi skilled unit changer.

was the distributor move, sometimes the rotor in the distributor will move just a hair. turn the motor by hand to tdc and see where the rotor is pointing

Hi, here is the location of the fuel pump replay below....



Hope it helps....

Can you hear the pump prime when the key is turned to the on position?

what sounds like is happening is the front end is not disengaging, it will not hurt it to drive without the module, but you need to find out why the front diff. actuator is not releasing. their is a shift motor on the transfer case, module and switch in the cab, and actuator on the front diff. all are susceptable to water, I would suggest getting a manual on it to aid in diagnostics

2002 chevy S10 ZR2

36 mm.
Torque 103ft pounds.

There is no shut off switch on a 2002 chevy S10. Sorry for the bad news.
Good luck and hope this helps, there is a fuel pump relay in the glove box behind a rear panel to the left corner in the box. The relay i believe is the middle one of the three.