Where is heat chield on chevey express - 1999 Chevrolet Express

huh (this a franken toyota?)

Problem with Toyota Cars & Trucks Head boults torque 3.4 chevey engine

maybe more freon

Change the thermostat in it,

What the manufacturer suggest. Change to other bands can also change the heat range of the plug. Which can lead to other problems knocking for pre-igntion, Hard starting in cold weather and flow plugs form low of heat range

This is close to imposible, you would need a scan tool to reprogram a need chip code into the computer, now if theres no chip the power locks or the door lock should deactivte the alarm system, if you dont have a door key then you would need to remove the door panel and manualy turn linkake on the lock as if it were the key, but i think the 2000 had a key chip.

Apply at heat light to the hinges and the lubricate them all. The heat will make the oils penatrate much quicker

Ican solve the horn problem i think. try reprograming the function thru the RDS radio control as in your owners manual, like changing your oil.

the seat heating elements may be partially shorted or drawing excess current, they are controlled by a timed relay in the seat heater control switch, the switch may also cause this, but most common issue is the heater element in the seat cushion in my experience..

Chk. all fuses, there is a fuse for injectors, If no spark at plugs chk ignition fuse and switch, and chk. fuse for e.c.m. Can't help with diagram. Parts dept. chevy dealer will print you one out.

my 2002 express van did the same. replaced the fan, it now has no troubles.