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C2500

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Question
Taillights don't work. 1998 GMC C2500
Hello there. Faulty tail lights are a common repair on the GMC C2500. There are a few possible reasons for the brake lights to work but not the taillights. The most common would be a wiring fault, bulb failure, switch...
Question
Brakes wear out fast. 1996 GMC C2500
Hello there. It does sound like your 1996 GMC C2500 has gone through an excessive amount of brake components. There are a few things that can cause premature brake component failure. Sticking calipers and wheel cylinders are the most common....
Question
Rear right brake lights. 2000 GMC C2500
Hello there. Brake and turn signal light faults are one of the most common repairs on the 2000 GMC C2500. The brake light bulbs are a dual filament bulb. One side is lit all the time when the vehicle's headlights...
Question
Fuel pressure test leaks
Hello there. It sounds like you have a few things going on with your 1996 GMC C2500. While I commend you on wanting to check for leaks in the fuel system, this is a little tougher than you would think....
Question
Stalling when stopping reverse
Hello there, a few different faults could cause the stalling when pressing the brakes on your 1998 GMC C2500. The most likely would be a power brake booster, vacuum leak, EGR, or vacuum line failure. Any of the listed items...
Question
Parking brake loose - 1993 Chevrolet C2500 Suburban
Hello. Over time, the parking brake cable can become loose. I usually start by adjusting the rear brakes because the rear drum brakes being loose will affect the operation of the parking brake. If the rear brakes are adjusted, then...
Question
Blinker light malfunction - 1998 Chevrolet Suburban 2500
Hello. Most of the time this is caused by a short in the combination switch. It shorts internally and allows this circuit to get power when it is not supposed to. I also have seen issues with the trailer wiring...
Question
Check gauges light is on and car won't start - 1990 Chevrolet C2500 Suburban
Hello. Most of the time, the symptoms you are describing are caused by the battery failing. If there is a bad connection at the battery or if the voltage in the battery is low, then this will occur. If the...
Question
Sudden RPM drop - 1996 Chevrolet C2500 Suburban
Hello. This is usually caused by a failing throttle body. Over time the throttle plate will wear into the throttle body bore causing it to hang up and not release as it should. I usually check the throttle body for...
Question
Car idle is high - 1994 Chevrolet C2500 Suburban
Hello. It sounds like you have a serious vacuum leak or a fuel pressure regulator leak. I would check all of the hoses for signs of leakage and also the intake manifold gasket. The intake gasket is the most common...
Question
the power windows do not operate
Use a test light to check for power at the switches - especially the driver's door master switch. If none of the windows work from their individual switches either, you can have a bad master window switch. A common problem...
Question
Very sluggish almost dies on idle till I get to about 20 mph, have replaced ignition module, plugs, rotor and distributor cap.
This is a sign of a failing idle air control valve. This is a unit that is located on or near your intake manifold that monitors the air intake as it is mixed with fuel prior to being injected into...
Question
When i start my truck it wont start up right away
This can be caused by many things. Without further detail as to the kind of sound and where specifically it is coming from this may be tough to diagnose without physically inspecting the truck and possibly test driving it for...
Question
Mass air flow sensor
Hi, thanks for writing in. Replacing parts is not a cheap way to try and find a problem. You should have the computer scanned to see what codes are stored. You may have to clear the codes and then see...
Question
How hard is it to switch an nv 4500 transmission from 2 wheel drive to 4 wheel drive in a Chevrolet.
Hi there. There are a couple of ways to convert your transmission from 2WD to 4WD. You could install a transfer case and have a short drive shaft go to it from the transmission. Another was is you will need...
Question
Fuel gauge bounces around, usually when it is on full
More often than not, this issue is caused by a faulty fuel gauge sender. However, it can also be caused by issues with the EVAP canister or other EVAP components. The EVAP system is designed to filter out harmful toxins...
Question
My truck cranks but it won't start - 1994 Chevrolet C2500
Hi. A couple of things to check: When the engine is at top dead center, does the rotor under the distributor cap point to the number 1 cylinder? It is very important that the engine is at top dead center...
Question
Is there an easy fix to a 700R4 transmission pump problem?
Hello there, many faults will cause the transmission in your 1990 C2500 to lose forward and reverse gears. The most common causes of transmission issues are low oil level, fluid leaks, shifter linkage faults, or shift solenoids. You stated the...
Question
No injector pulse but does spark.
Hello There, You are correct in that if the crankshaft position sensor or the pickup coil were bad there would likely not be any spark to the plugs. In relation to your no injector pulse problem, check the wiring harness...
Question
I have a clicking noise coming from my serpentine belt.
Hi there. To see if the idler pulley is making the noise or the crankshaft pulley is making the noise, simply remove the serpentine belt from the engine and start the engine. If the nose goes away, then a pulley...

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