20 Most Recent 2003 GMC Sierra 1500 - Page 4 Questions & Answers

1. Close all doors
2. Insert key into ignition
3. Hold down the power UNLOCK button on the driver's door panel, continue to hold down
until instructed to release in step 9.
4. Perform steps 5 through 8 in a fairly rapid succession.
5. Turn the ignition to the ON position (as far as you can go without starting the engine.)
6. Turn the ignition to the OFF position.
7. Turn the ignition to the ON position (as far as you can go without starting the engine.)
8. Turn the ignition to the OFF position.
9. Release the power UNLOCK button on the door panel. The vehicle should respond by
door locks locking and unlocking automatically. (If locks do not cycle after you let go,
not before you let go of the unlock button, then the vehicle has not entered programming
mode and you must start procedure over. Remove key from ignition, open drivers door
and return to step 1 ). If the locks do cycle automatically then proceed to step 10.
10. Hold down the LOCK and UNLOCK buttons on the remote until the doors lock and
unlock. This may take up to 30 seconds.
11. Repeat step 10 NOW for each additional remote. (Including any existing remotes).
12. Turn the ignition to the ON position to exit the programming mode.
13. Test remote(s).

When fuel level is very low, it can be noticeably heard. A full tank will dampen the sound. If anything you should hear a light hum. If its noticeably loud, then its an indication that it may fail soon.

I am assuming you mean the catalytic converter. It is located on the exhaust pipe, usually shortly after where the exhaust manifolds meet.

Tough to say. You would want to use a mechanical gauge to make sure your stock gauge is correct. If oil pressure is low, it could be the pump or worn bearings.

On the rack and pinion steering gear there is a short shaft that couples with the steering column shaft by a flexible joint. Similar to a u-joint. To check it, get under the truck and push back the rubber protective boot where the steering column comes out of the firewall. Look for the flexible joint and check if it is binding or loose. Someone may need to turn the steering wheel back and forth while you watch it. You may need the front wheels raised to observe its turning action. There is a pinch bolt that secures the joint to the rack and pinion stub shaft, it may have come loose or the joint may be bad.

there are cables inside of the window assembly that are connected to a pully on the window motor. it could be that the wires are tangled. it might need a new regulator, i think the motor would be fine.

Check out www.autozone.com for this type of diagram. You have to register, but it's free.

I don't believe that GM used an EGR valve on the 2010 4.3 V6. If it does have one, it should be on the front of the lower intake manifold, right in the center. They did away with that on most of the later models, from what I've seen....

certainly ...check instrument fuses

could be the blinker high beam window washer wiper relay block all one unit can ba replaced without removingsteering wheel

have you checked on your plunger on the front axel

High speed on the blower fan does not work thru the resistor.There is a seperate circuit that sould feed 12 volts directly to the motor. If you have access to a schematic it would help.The connectors for the high speed, burn out a lot. If you cant find I could look it up.

cud--but test alternator and make sure batt is holden 12.6v at all times--also inspect wiring and chec fuses and maxi fuses under hood--with older cars components wear and gain resistence too causing blacout until vehicle cools down

No. it is technically possible but there is a good amount of metal fabrication involved.