20 Most Recent 2003 Chevrolet Suburban 1500 Questions & Answers

If you touched any of the A/C controls within 45 seconds of starting your Suburban (after the battery change), you messed up the 'calibration mode' of the HVAC.

Pull the HVAC fuse (10amp) under the hood, and pull the two adjacent fuses (30 and 10amp) under the dash listed as 'climate control' in the manual.

Push the fuses back in, restart your car, but DONT TOUCH ANY of the A/C controls for 90 seconds.

I bet the A/C starts working again normally.

I recently tried the DIY service and repair manuals from a website and it actually helped me repair transmission problem in my jcb 3cx site-master. It would'nt move forward or reverse, engine was good both solenoids for forward and reverse worked, but still couldn't diagnose the problem. I don't have much technical knowledge but I just followed it step-wise, and now it works perfect! covers wiring, codes, diagrams, torque specs, PCV, everything got it from www.reliable-store.com

Do you know how to do scan tool diagnostic's ? Checking DTC'S - diagnostic trouble codes , viewing input data to the computers on the vehicle . The fuel sending unit is located inside the fuel tank ,it is a input to the PCM - engine computer . The PCM use's this fuel level info . to be able to conduct testing procedures for the evaporative emission system. The Evaporative Emission Control System (EVAP) is used to prevent gasoline vapors from escaping into the atmosphere from the fuel tank and fuel system. The EVAP system usually requires no maintenance, but faults can turn on the Check Engine light and prevent a vehicle from passing an OBD II plug-in emissions test.. Shorted sensors can cause all kind of problems .including bring down the five volt reference circuit inside the PCM . Also checking for DTC'S in the 4X4 control module should have been done before replacing parts . Your best bet ,take it to a qualified repair shop. Do you know which transfercase your vehicle has ? The NVG 246 EAU transfer case features a 4 button shift control switch located on the instrument panel. The BW 4482 transfer case features a 3-button shift control switch located on the instrument panel. Just replacing parts is not the way to a fix . Both systems can set a number of DTC'S DTC B0790 DTC B2725 DTC C0306 DTC C0327 DTC C0329 DTC C0359 DTC C0550 The NVG 246 EAU transfer case DTC B0790 DTC B2725 DTC C0300 DTC C0305 DTC C0306 DTC C0321 DTC C0327 DTC C0359 DTC C0374 DTC C0379 DTC C0550 Do yourself a favor ,have a qualified repair shop diagnose the problem . An you can't just replace the 4X4 control module an expect it to work .It needs to be programmed . Transfer Case Shift Control Module Reprogramming Remote Programming Feature Connect the scan tool to the vehicle. Power-up the scan tool and select the Service Programming feature. Select the appropriate vehicle. Press the Request Info button on the scan tool. Disconnect the scan tool from the vehicle and connect the scan tool to the computer station. Follow the menu select items for reprogramming and provide information as to what type of device you are programming and whether you are reprogramming or replacing the electronic control unit (ECU). Select "vehicle" from the selection menu. Select the module you wish to Program. Select "Normal" for Programming Type. Select the applicable software calibrations. Transfer data file to the scan tool. Reconnect the scan tool to the vehicle. Turn ON the ignition, with the engine OFF. Select the Service Programming feature on the scan tool. Press the Program button on the scan tool.

My wiring diagram only says "underhood", and also indicates that there's an I/P (interior/passenger)
relay box as well.
The cigarette lighter fuse in a 2003 Suburban is identified as a 15 Amp fuse.

Sounds like it's the heater core

bbbind.com has wiring diagram for your transfer case. I looked at it, but, couldn't get everything in one picture.

Hi, this is a pretty common problem on these Silverado instrument clusters. We can repair it for you or provide you with the parts to do it yourself. Click here to learn more about these Silverado instrument cluster problems: Dr Speedometer Instrument Cluster Repair Speedometer Repair Guage...

Internal problem with the radio. Common problem. The mechanism the sucks in the cd is supposed to lower inside the radio but isn't working properly.

Below the right side of the dash behind the glove box.

If you can see under the seat, maybe move it forwards and raise it up if it is a power sear, look for the wires coming out from the rear of the seat bottom to a connection under the seat.

There should be a fuse block under the hood. Go double-check.

First things first...your vehicle will register fault codes for assisting in the trouble shooting of some system failures (usually emissions related faults.) This system is called OBDII. Auto zone used to provide free reading of your vehicles on board computers in the hopes that you will purchase the required repair parts there. When you retrieve the codes either by the assistance of a parts store or by purchasing a ODBII Code reader you will have a place to start your investigation. PS: Your owner manual may also help to identify the meaning of tell tale lamps on your dash cluster. Follow the link below for another possible fix for your flashing light: button flashes when Auto is selected 38 degrees tonight with fogged up...

The motor has sealed bearings. You need a motor but probably not the squirrel cage. The switch repair was to get the fan working and warranty wouldn't cover the fan.

Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem. Best Manuals

Removing the Starter
1. Step 1 Open the hood to access the engine compartment. Disconnect the battery by unscrewing the positive and negative terminals. This will prevent the risk of electrical shock.
   
2. Step 2 Crawl under the passenger side of the truck and locate the starter. The starter is positioned between the transmission and the engine.
   
3. Step 3 Unbolt the negative and positive wires from the starter with a socket wrench. Take the nut off the stud and pull the wires off the stud. Repeat the same for the positive wire.
   
4. Step 4 Unscrew the two bolts holding the starter to the frame. Wiggle the starter to work it free from the flywheel.
   Installing the Starter
5. Step 1 Position the new starter onto the frame. Tighten the bolts to secure the starter in place.
   
6. Step 2 Unscrew the nut on the positive stud and push the positive wire down on the stud. Tighten the nut on the stud to secure the positive wires.
   
7. Step 3 Unscrew the nut on the negative stud. Push the negative wire on the stud and tighten the nut to the stud to secure the wire.
   
8. Step 4 Connect the battery cables to the terminals. Ensure the positive wire connects to the positive terminal. Ensure the negative wire connects to the negative terminal.
   
9. Step 5 Start the truck to ensure the starter is functioning correctly. The starter should catch as soon as you turn the key and start the truck.
   

P0140 - 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 2) The causes for a P0140 code are few and unless the wire/s has been damaged, replacing the sensor is usually the smartest thing to do.