20 Most Recent 2007 Chevrolet Uplander - Page 3 Questions & Answers

That can be a tough one to diagnos , Transmission come from same make , model and year vehicle ? Do you know how to use wiring diagrams ? Free wiring diagram's at http://bbbind.com/free_tsb.html Test power and grounds for PCM/ECM / TCM . Check wire from DLC to PCM etc.... Check your work , everything get hooked back up right ?

I have 07 Chevy up landed and reduced engine power comes on and I can't start the van I changed the TB and worked good for a month or so now I have the same problem again saying reduced engine power not sure what to do

The rear AC is supplied from the same compressor and charged through the same low side port under the hood, so if the front AC works ok then the problem is not a low refrigerant level in the system you have other issues like a sticking blend door or failed blend door actuator.

If you have recently serviced your coolant system or the reservoir tank has gone below the fill(low) mark I expect that you have an air lock in the heater hose. Usually by keeping the reservoir full the air lock will pass as the engine goes through a few days of engine temperature cycles. Keep an eye on the temperature gauge during this time and check that the reservoir is full. Hope this helps?

Check the sensor in the bottom of the radiator is connected and working.The water has to get hot before they come on near boiling point,the air con switch over ride s the normal sensor.

Check main switch for power with a test light or run a sepe rate length of wire to the fan from the battery as a tester ,don,t have a big short out.

The crank position sensor is on the top back side of the engine on the 3900 engine

Remove the entire seat from the truck and then remove seat cover and replace the broken part(s)

Lift the tail gate. There are clips or screws along the top edge. Remove this. The clips all you do is pull the center pin with a panel tool or pliers then the rest will come out. Then you will need to remove the clips holding the rear side of each of the back wheel wells in. Under that will be more clips, screws or bolts that hold the side edges of the bumper cover on.

Moses, Wiring schematics are broken down into system categories like - Body And Accessories - Electrical Distribution - Warning Systems - Lighting...ect. Please let us know what you are working on.

Hello Anonymous, Please consult your owners manual to enable (RVS) Remote Vehicle Start. This feature is turned on via the menu button on the driver information center.

Any codes? Overheating ? crankshaft sensor.

Depends on how hot. If it is normal, not overheated. Most common is the starter. It drags slowly or just clicks. If the check engine light is on. Have the codes read. Sometimes a crank senor will cause a no start. This would let the engine spin fairly fast.

Suggest you check fuel pressure an ignition for spark when not starting . No spark could mean a bad ignition module , low fuel pressure could indicate a weak pump .

Purchase repair manual at auto parts store