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Express 2500

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Question
Van works well until it gets hot.
Operating temperature can drastically affect vehicle components - especially electronics. An engine that won't start when hot usually indicates a problem in one of the vehicle's circuits or electronic parts. Heat can cause thermal expansion and contraction, as well as...
Question
My bus is not starting.
It sounds like you may have a problem with your key. If the key is excessively worn it will not be able to unlock the ignition cylinder so you can turn the key. I would ask for help from one...
Question
Vehicles starts but dies
There may be a couple of different things that could cause the start then stall. The fuel pump and filter are the most common cause of a stall, or no start, but the mass air flow sensor can also cause...
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
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...

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