2001 Chevrolet Silverado - Page 5 - Answered Questions & Fixed issues

There is a removal tool to release plastic locking tabs at back near fire wall, I had the same problem with my 01 silverado I used a 4" piece of hacksaw blade held with vice grips and cut aluminum cover and pried it apart to release, be careful not to cut heater core tube.

Could be the switch or the motor.

Maybe the antitheft system turning off the fuel injectors. This is a notorious GM problem. http://vatspasslockpasskeysecurityhelp.yolasite.com/

I went thru three before getting a good one.

Inspect/Replace If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing

• The heater housing is usually under the dash and must be removed to gain access to the heater core.
• Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.

The heater housing is disassembled to get to the heater core. Heater Core

• Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
• Remove the heater coolant hoses.
• Remove the cable and/or vacuum control lines (if equipped).
• Remove the heater core securing brackets and/or clamps.
• Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
• To reinstall the heater core, reverse the removal steps.

When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

most likely needs a LH (bottom) temp actuator. Located in the center of the dash on the bottom, you have to remove the hush panel on the rh side of the truck

find a way to detect the current drain, for example a 12 v flashlight bulb, connect that between the + and the wire and it should light if the current is still flowing. Pull each fuse till you see the light bulb go out. The current is pulled by that circuit. When you have identified that circuit, visually inspect that circuit for problems. Examples are: radio wire shaving against bare metal, trailer wire bare. Once you know which circuit drains the battery it should not be to difficult to find the problem. If you need further help, I’m available over the phone at https://www.6ya.com/expert/robert_573a00ba7e399076

check your fan clutch fo proper function. if you can free spin it its bad. or take something and try to stop it while its running at operating temperature, if you can easily stop it its bad. It should stop turning within 2 seconds of turning off the vehicle, if it doesnt its bad. Also suspect a bad water pump with worn out vanes. Sounds like you dont change your coolant regular, all of this is from lack of maintanance on the cooling system. also take a temperature differential from the inlet and outlet of the radiator, anything over 40 degrees and your radiator is stopped up. Themostat etc.....

Do you already have a factory installed brake controller, or are you installing an aftermarket brake controller? Also, take time to check owners manual in fuse section for possible circuit already in fuse/power distribution box (under hood) and would require you to just insert recommended fuse.

Most of the time it is the computer if there is no communication,make sure the code reader is turned on.

The airbag in your vehicle is an important safety device, and the airbag module ensures the proper functioning of your vehicle's air bag. If this module is not functioning properly, your airbag may not deploy during a crash. When there is a malfunction, your airbag module warning light will illuminate on your vehicle's dash. You will need to have the airbag assembly checked out by a qualified mechanic, but once that is done, you can reset the warning light and airbag module unit. If you've never done this type of job before, it should only take you 5 minutes.

1. • 1 Open the hood and loosen the retaining nut on the negative cable wire cable clamp using a socket wrench.
   • 2 Slide the cable clamp off the negative battery terminal.
   • 3 Wait 3 to 5 seconds and reconnect the battery terminal. Tighten the retaining nut using a socket wrench. Once the power is restored, the airbag module should be reset.
   • 4 Verify that the module has been reset by turning the ignition key to the "II" position and checking to make sure that the airbag light does not illuminate.

ok is it water in your floor board or moisture if its water you heater core is leaking and needs to be replaced/ most of the time moisture on pass side floor is always a heater core prob/ if you need instructions on changing it let me know

Do you get a click when you press the button? The relay should be audibly clicking if it's working.
If it is clicking then I'd check the horn itself, might be bad or have loose connection. If no clicking sound at all then I'd suspect bad relay or fuse (if it has a dedicated one), also possibly bad switch.

You will need to check things logically. Run the truck in the air and note where the vibration is at. Take the wheels OFF and put a few lug nuts to hold the rotors on, take the truck to 45mph or whatever the vibration is the worst. is it still there? if its gone, check wheels/ tires. if its still there, check rotors, axles. A drive shaft will make a rapid vibration at low speeds since it turns 3 to 4 times faster than the wheels. does it vibrate on or off the gas? Can you power through the vibration like go 60 and then coast back through? You have replaced a lot of parts that would not cause vibrations. Are you just changing parts willy nilly or is someone actually checking and verifying that these parts really bad?

you mean KNOCK SENSOR? its under the intake manifold, replaced both of them AND the harness. Be sure to put silicone grease in the connectors and around the rubber plugs. Water is the number one killer of these.

Yes it does. It may have a solenoid pack, or individual solenoids for 1-2 shift, 2-3 shift etc.

THEY are located under the intake in valley of engine. intake has to be removed for these to be replaced. recommend replacing both and the harness.

Only rust

Hit it with the end of a 2x4

The air pump will only run for about thirty seconds on start up to run a self test, it will the run under normal conditions whenever the computer deems nessicary, if you have an airpump related code you most likely have an or vaccine leak somewhere

cannot switch from defrost to panel airflow 2001 chevy silverado