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Express 2500

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Question
4l80e transmission in limp mode
Hello and thanks for your question. When changing out the transmission and ECM from another vehicle to your vehicle with the same year and model can effect many things. Check all plug to ensure that everything on the transmission is...
Question
codes p0101 and p0303 simultaneously
The code P0101 is for a problem with the MAF sensor and code P0303 is for a cylinder number 3 misfire. The first thing to check is to make sure there is no vacuum leaks or leaks between the MAF...
Question
Car oil leak
Hello. The oil can leak from any number of places on this engine. The most common places that this engine leaks oil is from the valve cover gaskets, and from the rear main seal. If it is dripping while the...
Question
Truck lights not working
If the bulbs are good, the problem could be with the power circuit. The circuit involves the fuse, a relay and the switch. Any of those components will keep the lights from working. Electrical issues can be troublesome to diagnose....
Question
Truck cranks but couldn't start
Hello. Thanks for writing in about your 2000 Chevrolet Express 2500. It sounds like the glow plugs have burned out or that there is a lack of fuel getting to the engine. In diesel engines, failed fuel injectors are common....
Question
Window malfunction
Hello. Thanks for writing in about your 2006 Chevrolet Express. When windows quit working, this is usually due to a faulty window motor and regulator. Another possibility is that there is a problem with the window switch. Sometimes there are...
Question
Several lights quit working
Hello. Thanks for writing in about your 2003 Chevrolet Express 2500. There should be a relay for the turn signals, flasher, and hazard lights. More than likely, this relay is faulty and would need to be replaced. It is also...
Question
Vehicle stalls while reversing
Hello. The power steering in your 2007 Chevrolet Express is run off of vacuum from the engine. If there is a vacuum leak in the engine’s system, it will cause the problem that you are experiencing. The brake booster is...
Question
Hard shifting, high revving
Hello. It is possible that the transmission is faulty and may need to be replaced for your 2007 Chevrolet Express 2500. It sounds like the transmission valve body is overheating and causing the shifting problem you are experiencing. The clutches...
Question
Low fluctuating oil pressure when engine is cold and noisy lifters when driving over 50 miles an hour
There are several causes for low oil pressure. They include components such as crankshaft bearings, to things like an oil filter or pump. A leaking o-ring will cause some issues, mostly related to low oil levels. The oil passages...
Question
Battery charger makes loud noise when trying to charge battery?
Hi There, Most battery chargers on the market today have a couple of different settings. They will usually have a regular 12 amp charging mode, a 6 amp charging mode and a boost charging mode. The 6 and 12 amp...
Question
Blinker/turn signal does not work or blink, stays on can hear a click though - 2004 Chevrolet Express 2500
Hi there - your symptoms suggest an electrical problem with the bulbs, or wiring to the them - not the flasher unit itself. Check for good bulbs, good contacts in the bulb receptacles, and good grounds at each corner of...
Question
Random misfire - 2004 Chevy Express 2500
Hello. Most of the time if you have a multiple cylinder misfire such as this, it is caused by a fuel system problem. If the fuel pressure is low, then this will occur. If the fuel pressure is fine, then...
Question
My horn switch is not working would like to change to push button instead and need help locating the wire in the steering column.
I would recommend consulting a wiring diagram for this particular modification. Wiring diagrams are available in Chilton or Haynes service manuals. You can pick up one of these books at all of your local auto parts stores for the particular...
Question
How to disable passenger airbag in work van?
It's always advisable to transport small children in the back seat. However, if your van does not have back seats, there should be an airbag off switch located on the passenger side of the dash. The vehicle key must be...
Question
Blinker/turn signal does not flash, I can hear a click in the module, lights up but doesn't blink 2004 Chevrolet Express 2500
Hi there - I would check the turn signal light bulbs and ground connections on the side which is not flashing. Burned out bulbs, shorts and poor ground connections can cause the "no flash" behavior you describe. If the hazard...
Question
Why does my van always stay at a high idle 2000 Chevrolet Express
Hello. There are a lot of reasons that would cause a high idle, but most of the time it is caused by a vacuum leak. When there is an excessive amount of air entering the engine the computer will compensate...
Question
transmission hot idle engine problem had transmission rebuilt and replaced computer still have problem any advice
Hi Craig. Thanks for writing in today. If you are stating that your transmission is running hot while in idle, in most cases, this type of problem is related to transmission fluid that is clogged inside internal hydraulic lines or...
Question
my 2001 chevy express overheating,start leak coolant,vent back to mechanik who replace radiator 3 mon agoy,been told fan cluch nat
It is entirely possible the fan clutch has failed. When this happens, the fan will not pull enough air through the radiator and cause the engine to run hot. Generally there are two types of fan clutch designs. One is...
Question
Knock sensor P0332 2004 Chevrolet Express 2500
Hi there - the P0332 problem code indicates a "low signal", which can mean a bad knock sensor, but it can also mean "no signal", as in, a wiring problem. Check the connections to the sensor for good connectivity, and...

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