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Either your battery just died or else your battery connections have gotten so loose or dirty that you're no longer getting any power through them. Check the connections first - clean them THOROUGHLY and tighten them fully.

2004 Chevrolet... | Answered on Nov 17, 2019

You can get guide from many sites.. i know few
error codes/ fault codes, wiring diagrams, schematic diagrams, torque specs, engine info, switches functioning, assemble, disassembly, complete refurbish, repair, installation every single thing is covered
within seconds u can get the access and it's totally illustrative complete.. eg. pls try

Chevrolet Cars &... | Answered on Nov 15, 2019

CAL stands for Calibrate. The IPC (instrument panel cluster) needs to be recalibrated. This could becaused by a battery/power spike, which means the IPC will need to relearn default settings, or therecould be an underlying problem. Technician will need to hook it up to a computer to analyze problem,and relearn settings.

2006 Chevrolet... | Answered on Nov 14, 2019

When you have air in your cooling system, check for leaking gaskets. Most of the time the head gasket is leaking. and it is just a matter of time the whole gasket blows out. It will cost you because the engine needs revision, once the head gasket blows. Don't drive till a tech has checked your engine.

2004 Chevrolet... | Answered on Nov 12, 2019

Has the battery been disconnected, or has it gone dead? Every time the battery is disconnected, all trouble codes are cleared, the check engine light is turned off, and all system monitors are reset. For the monitors to get back to a 'ready' status, the vehicle needs to go through one or more (sometimes quite a few) drive cycles.
When you go to the emission station, they check for codes, AND also check to see how many of your monitors are in a 'ready' status. (This keeps people from disconnecting the battery, and thus clearing any trouble codes, in order to pass emission tests).
If you have not disconnected your battery for a while, but the monitors are still not showing 'ready', you need to have a qualified shop check out your computer and other electronic systems.

2001 Chevrolet... | Answered on Nov 11, 2019

There are 2 types of GM Theftlock, Theftlock I and Theftlock II.

The Theftlock I is found in pre 2000 vehicles and Theftlock II is

in the latter models.

Theftlock I - Uses a volatile code that is input through the key

pad on the front of the Radio. If the power is lost (dead battery

etc.) the code is gone and must be re-entered for the radio to


If you do not have the code, you can get it by phone, email, etc.

but you will need the 6 digit Radio ID number.

To get that, just turn on the ignition and hold down the 2-3 keys

(sometimes 1-4) and the first 3 digits will appear in the display.

Then hold down the AM/FM button and the last 3 digits will

show up.

With this number you can get the unlock code. This code is

available all over the place for less then $10.00. Just search

on theftlock. Use the HR and MIN buttons to enter the code

and you are in business.

This may sound a bit complicated at first but you can do it

in less then a minute with a little practice.

Theftlock II - Uses an EPROM (erasable/programmable

read only memory) or a PROM (the difference is you can

not alter the prom once it is programmed). In either case

the code is burned in and holds even when the power is lost.

With Theftlock II the radio is married to the vehicle by way

of the VIN. When the vehicle is started the computer

compares the number in the radio with the VIN. If they

match, the radio works, if not the radio displays LOC and

you are finished, there is no easy way around it. The radio

will not work until you make a trip to the dealer.

If the radio has an EPROM the dealer will use something called

a TECH 2 DEVICE to change the VIN stored in the Radio.

The Radio does not need to be removed (for the serial

number or any other nonsense). The technician just plugs

into the computer and resets the VIN in the radio. It can

be done (if you know how) in less then 15 minutes.

I checked around and the going rate is about $60.00

(none of the dealers I contacted would do it for free).

That works out to $240.00 per hour, but still much

cheaper then a new GM Radio.

If the radio has a PROM then the chip must be changed

and that seems to be factory only, in other words a new

radio! The good news is, only a very few of the high end

GM vehicles are equipped with a PROM so it is highly

unlikely that your radio has this anti theft feature.

Good Luck!

2000 Chevrolet... | Answered on Nov 11, 2019

have you checked for trouble codes out of your list of parts the crankshaft sensor could if faulty cause problem but so could fuel pump fuel circuit cat converter etc just throwing parts and most are evap wont fix problem

2005 Chevrolet... | Answered on Nov 11, 2019

The fuel pump circuit was a common cause for this . Any place between the pump and fuse can have a bare spot in the insulation intermittently bumping into metal . I believe the injectors may run on the same circuit so check their wiring also .

1992 Chevrolet... | Answered on Nov 10, 2019

DUring those periods when it doesn't start, does the security light flash? If so, there's a trouble code stored. Also, GM has issued a service bulletin advising you to remove all other electronic devices from the vehicle before starting anti-theft diagnosis. That means removing phone charges, dash cams, even extra transpoder keys from your key ring.

Also, BTW, thanks for not telling us the year, make, model. we know it's a national security secret, but it help technicians to know what vehicle you're asking about.

2008 Chevrolet... | Answered on Nov 10, 2019

On my 04 Grand caravan,the E G R tube went through a pipe about the size of a quarter to the valve should have a rubber grommet in it

Chevrolet... | Answered on Nov 09, 2019

You should just be able to take out the module - just wire directly from the power source, though some controls for all axis functions and you should be good to go. The memory module is not really needed for basic operation.

Chevrolet Cars &... | Answered on Nov 09, 2019

Trace wire and voltage back to switch point and restore with new switch point or new power source.

Chevrolet... | Answered on Nov 09, 2019

Use amp meter and determine power draw against fuse size. Something is shorting - but if you can determine how much power is trying to go through you can devise a fix.

2008 Chevrolet... | Answered on Nov 09, 2019

It can only be power feed. Start at the light work backward till your meter power again. Possibly a broken wire on terminal point.

Chevrolet Cars &... | Answered on Nov 09, 2019

You will need to connect to the computer, check the codes and clear them through the computer. Many auto parts stores will do this for free.
If you dont correct the problem, the check engine light will return.

2014 Chevrolet... | Answered on Nov 09, 2019

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