20 Most Recent 2003 Chevrolet Tahoe - Page 2 Questions & Answers

Bad bearings mine bad sensors, broken ABS wires,

it sounds like a broken wire in the passenger door.

Passlock is pretty easy to diagnose and fix. See this post on how it works http://ricksfreeautorepairadvice.com/how-passlock-works/ The fix usually involves replacing the lock cylinder case http://ricksfreeautorepairadvice.com/passlock-fixes/

I would change the fuel pressure regulator first, if no change in pressure the fuel pump is on the way out.I have a 01 silverado 4.8 and my fuel pressure is between 55and60 psi.

Check all of the feed wires that come off the positive side of the battery. A fuseable link may be bad.

Simple check is to determine if the engine coolant is getting to the rear unit. Two heater hoses run from the firewall, passenger side, under the car to the rear. At the firewall there is a 4 hose connector, heater control valve, that controls the amount of coolant to the rear unit. Sometimes it will plug up, some times the heater hoses will plug up, some times the control valve will not get the command to open with a vacuum hose.

At this website www.reliable-store.com I found all complete guide, much better language, complete detail in 800+ pages, and they also have live assistance feature

It really sounds like a tranny problem, best addressed by a Transmission shop. It might be an easy fix, or a really expensive one.

You may need to clean inside the throttle body. YouTube has videos on how to do it. Also, your Idle Air Control motor might have carbon build-up in the passage for idle air. Take the motor off, and clean it gently and check the air passage for blockage.

I suspect a faulty ground connection. Add a separate medium gauge wire from chassis to tailgate, routing it through the existing wiring harness location. Ensure bare metal connection at both new ground wire locations.

usually a bad blend door actuator motor

Disconnect the battery and be very careful. The SRS system retains a lot of energy, and you should give the system time to completely power down before working on it.

OK... this is from a "SOLVED" 2002 FIXYA post for: "Temp sensor and compass not displaying on my 2003 yukon xl" Temp sensor and compass not displaying on my 2003 yukon xl ... this info MAY help you with your 2003 Tahoe ~ it has some good tips for you!? Here is more: "Chevy Mechanic: Dave Nova The problem is going to be a break in the circuit between the *SIR fuse and the yellow wire at the mirror connector. This wire travels through the relay block. You can check connections at the relay block and trace the wiring. You can also just run a new wire, it may be faster." and "Check for voltage on the yellow wire at the mirror connector with the key on. If there is voltage on the yellow wire then the problem is inside the circuit board in the mirror and the mirror will need to be replaced." Dave Nova included the Fuse Block shown below in his post, but I see no "SIR" Fuse? * I just discovered it is a "Supplemental Inflatable Restraint (SIR) Fuse = AIRBAGS. The two photos below are MUCH closer to what you should have! SEE YOUR FUSE ASSIGNMENTS HERE: Chevrolet Tahoe GMT400 mk1 1992 2000 fuse box diagram Auto Genius http://www.autogenius.info/chevrolet-tahoe-gmt400-mk1-1992-2000-fuse-box-diagram/ $50 please ANTHONY just kidding of course and by the way, MERRY CHRISTMAS 2017 as of 24 min ago!

No, but you can put the 50-80$ sensor in too correct the system considering you just spent 500-600$ to have the pump replaced. Or you can just put non-air rear shocks on the vehicle although the suspension system will generate a warning message on the dash.

Your best bet have the instrument cluster tested . Hooking it up to a factory scanner is the best first diagnostic step . Checking for DTC'S - diagnostic trouble code's . Checking cluster data , all gauge info. come's from the BCM or PCM over the class 2 serial data network . Class2 data is a communication network for the control modules . Are their any light's lit on the instrument cluster ? Check engine , ABS , Air bag etc..... GM also had instrument cluster problems from 2003 to 2006 , stepper motor's that drive the gauge needls , silver migration -google that one. How to repair GM Instrument Cluster Speedometer Gauge Stepper

to locate and fix the you can take help from service and repair manual which you can get from the given link to save your time and money http://toolsnyou.com/

I, feel sorry for you, after reading your problem, but don't worry you visit the Reliable-Store they will help you for sure. 2003 Chevrolet Tahoe Workshop Service Repair Manual

Fuel pump most likely

disconnect the battery for a minute or two, that will reset the computer back to default settings and force a relearn to the system, if that doesn't help have the fuel injection system serviced If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_4c166ba81493f541