20 Most Recent 2002 Chevrolet Avalanche - Page 4 Questions & Answers

Its in the engine compartment above the frame rail right next to the battery.

Get a new Gas Cap. The evap is setting due to much vacuum around cap.

Check Fluid in Front diferental. It has a sensor that when fluid levels get low it will flash a light. If it is low I would recommend adding Lucas Diferental additive and finish filling with dex-merc trans fluid

if you have fitted a new ECU ,you will need an software update

do you have gas in it? or a blocked fuel line? Diagnosis will only show your the electrical side of the equation

not a good idea but try oiling it with a old fashioned oil can not a spray and see what happens

The front crank seal is behind the oil pump on the LS series motors. There is also a seal at the crankshaft and harmonic balancer on the front timing cover. This is typical leak area. You can carefully remove the harmonic balancer with a puller, replace the timing cover seal and reinstall. Make sure not to pinch the seal lip You will have to have a special tool in order to re-install the balancer, which is extra long to squeeze it on the tapered shaft. I do not think the other crank seal is an issue since it drains to the pan behind the oil pump.

It likely has nothing to do with your fuel pump. The pump is not located anywhere near the transmission. It could be that your transmission switching unit is not working right. You should take the car in to a mechanic or transmission shop. This is likely not a problem you can solve on your own.

From your description of the issue, it's more likely either a bad connection to the battery, or the starter.

Did you bleed the system after doing the brakes? and since you din't say abs light I assume you mean the brakes are acting erratically. If you bleed the breaks first after that try it and if it still does it make sure you have the correct rotors and pads.

most likely problem is a blown head gasket

Get a replacement from a Chevy dealer and it should be obvious as to how it is installed. First check to see that the one you have is just not out of adjustment. It should screw into a bracket with a locknut. Also check that the bumper on the pedal that presses on the switch is OK. Lay on your back on the floorboard of the truck with a flashlight. Wear safety goggles so nothing falls in your eyes.

I suggest running the fault codes to determine the exact reason for this . All disconnecting the cable did was an attempt to reset the codes but there was no attempt to determine what the fault was so naturally the problem will reoccur .

I have encountered this before and it was the vacuum supply line from intake to the fuel pressure regulator sucking fuel through regulator. it could also be more serious like intake gaskets

if you read the owners manual it should give specific instructions on resetting it, if not, then call your local Chevrolet dealership, and ask for the service department, and they should be able to tell you exactly what to do.

You have what is called daytime running lights. Only the dealer can disable.