Why does my truck lock and unlock not work?

Power either in or out of the relay is not working. To my knowledge (and I most certainly may be wrong on your truck) they use a separate relay under the hood for the lock and unlock which is why one may be working and the other not. A quick test may be to swap the lock and unlock relays.

Is it illegal to disable automatic door lock on Silverado?

Many third party repair shops will inform you that the disabling of automatic door lock features is illegal and refuse to do the service for you initially, and later inform you that it is your only option and charge you an obscene amount to have it done.

What’s the best way to lock and unlock a car?

Using the car keys to manually lock and unlock the doors is a good solution in this situation, as it can clear latch problems inside which hinder the automatic locks from functioning properly. As a temporary solution, it is recommended to manually lock and unlock doors in order to prevent theft.

When to use 4WD in a GMC pickup?

Maybe the manual is in the dash, we have a few gmc vehicles of that era and have always engaged 4wd before moving, 4wd should be used cautiously and sparingly imho. 4 lo you will not need unless pulling a boat out of a sandy launch etc. In fact I would skip using 4wd except when absolutely necessary and never over 40 mph.

How does the PassLock work on a 1998 Chevy truck?

Most ’98 Chevy trucks came equipped with a General Motors passlock security feature that cuts the fuel supply to the engine if a key that’s incompatible with the system is inserted into the ignition. Once the theft-deterrent security feature has been activated on your ’98 Chevy truck, you will have to reset the passlock to start the engine.

How to unlock your Chevy or GMC radio?

How to Unlock a Chevy Radio. Step 1: Start the vehicle and turn on the radio. Step 2: Press and hold preset numbers 2 and 3 until a three digit code appears on the radio display. Write this code down. Step 3: Press the AM/FM button. Your radio will display a second three digit code. Write the second code down.

What to do if your GMC radio says INOP?

If radio display reads “INOP” while the vehicle is on, too many incorrect radio codes have been entered. To remove “INOP” from your display and unlock your radio, you must leave the key in the On position for one hour. Once you’ve retrieved your radio unlock code, write it down for future use.