Chevy Express

REMOVAL PROCEDURE

Remove the engine cover.

Disconnect the spark plug wires at the ignition coils.

Disconnect the ignition coil harness connector.

Remove the ignition coil mounting bolts.

Remove the ignition coil.

INSTALLATION PROCEDURE

Install the ignition coil to the bracket.

Install the ignition coil mounting bolts.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten

Tighten the ignition coil mounting bolts to 8 N.m (71 lb in) .

Connect the ignition coil harness connector.

Connect the spark plug wires at the ignition coils.

Install the engine cover.

In general, bank one is on the same side as the #1 cylinder. If the engine has more than one head, bank #2 will be on the opposite side, but if the engine only has one head there won't BE a bank #2.

Sensor 1 is the forward sensor,. It's typically screwed into the exhaust manifold right where all of the exhaust lines connect into the common line. It's about the only thing that screws into the exhaust and if you look just in front of the head-pipe you should be able to find the Oxygen sensor.

Sensor 2 is typically AFTER the catalytic converter. Sensor 2 seldom fails but of course, there are exceptions.

BTW, if bank 1 sensor 1 has failed, you can bet that bank 2 is right behind. It's kind of like sparkplugs, replace them both while you're at it.

7000

You have to take out the air box and the coolant overflow reservoir. Then on the bottom driver's side of the radiator tank, you have to open the petcock to drain the coolant. It unscrews. You will have to take the 4 bolts out that hold the upper and lower halves of the fan shroud together. Pull the wiring off of the top of the shroud. You then take the bolts out that hold the top of the shroud to the core support. Move all of the wires and lines out of the way and then remove the upper half of the fan shroud. Using pliers, remove the clamps that hold the upper and lower hoses to the radiator and remove the transmission cooler lines. (There should be a tool in your new radiator to open the spring clips that hold your transmission lines in... Otherwise, use a pick tool to remove the clips and pull the lines out of the radiator.

Remove the radiator... You really should use this as an opportunity to replace the Serpentine belt and hoses while you are in there.

Re installation is the reverse of removal.

It doesn't have a speedometer cable. It is electronic.

With screw driver, causiously prey the whole orange housing out from the body of the van. Then twist out the wired bulb housing. Then just pull out the bulb from the plug. Reverse order to replace.

temp sensor going bad will cause the engine to dump fuel and foul plugs very quickly.

If it's a sensor, it will usually be the TPS aka Throttle positioning Sensor, but most of the time it would be a Vacuum leak

Hope i,m not stati'n the obvious, meaning you may have already checked, but I used to have an old '84 ford half ton van, and the clips were on the ouside edge of the doghouse. Now I realize we,re taling about 2 different animals, but my guess is there can't be much difference. Just a couple (guesses), does your van have carpet? If so try pulling the caroet back just enough to expose these hinges,sould be 2 each side twd top, 2 each side twd bottom. Not there? if not bolted to the undercarriage,call your local dealer, from timr to time they'll actually put down thir coffee cups.
Lottsa luck bud

Purchase a Purolator Cabin filter, as it comes with detailed instructions.

Every time you start the engine, SRS(airbag) performs a self test for a few seconds. On a Chevy Express the light should only be on when there is a fault, and turn off once the fault is fixed.

check out the flasher itself some are set to flash faster than others,switch out the hazards with the turns and see if hazards flash fast.

For the odd plugs ( driver side) 1 and 3 open the hood. They will be on the right side of the engine and be the first two plugs closest to the front of the vehicle. You will find that it is easier to feel them then to see them. This is fine because there is really no obstructions other than visual. Once you locate the plugs be sure to carefully remove the wires by using gentle back and forth twisting effort and slowly pull them off. Don't tug at the wire- just at the rubber. You can use a pair of larger pliers, even channel-lock pliers for these two plugs. Often using bigger pliers doesless damage than smaller pliers would. There is less of a tendency to fight things because of the increased leverage bigger pliers allow.
If you are replacing the wires then go ahead and even cut the rubber away from the plug end. Once the metal clasp is exposed it's just a matter of gripping it with pliers and giving it a jerk to pop it off the plug end. Be sure you don't let any rubber or metal pieces fall down around the base of the plug. Not only do you risk making it difficult to slide a socket down far enough over the somewhat shallow hexed sides of the plug to remove it, you also risk these pieces falling into the spark plug hole. This would cause all sorts of havoc. Being careful with plug removal and installation is very important. I've been unfortunate enough to cross thread a spark plug several years ago. Luckily it was on an air cooled VW engine. I removed the head, installed a helicoil ( a brand name product that makes it so that you can save a spark plug hole by re-tapping it, inserting their special threaded 'Heli-coil' and then you can install your plug as normal). The coils are pretty cheap, but the tool is expensive. I kept my tool for years and fortunately never had to use it again. That's one lesson only a fool would have to learn twice. LOL being a fool, I guess I'm just lucky. No really, you can avoid cross threading a plug by threading them in very slowly with your fingers. If you must then put the plug in the socket and put a short 3/8" extension on it. Then slowly install the plug still with your fingers turning the extension without a socket wrench. Once fully inserted your socket wrench will only serve to snug the plugs. Remember that if the plugs have washers loosely attached to the plug when purchased that these need to be smashed as the plug gets tightened. Often people under torque their plugs only to find out later that the plug has worked it's way out of the threads. When this happens you'll know it! So rule of thumb is to torque at least a couple of easily accessible plugs with a torque wrench ( Many auto parts stores have tool loaner programs with a fully returnable deposit.) This way you learn the feel of a plug getting seated. That way when you get to the hard to get at plugs you'll be able to secure them with confidence. I still have my moments when I wonder if I've tightened a plug enough. You should never have to apply an excessive amount of energy on your wrench. If you are unsure then simply remove the plug and look at the washer. Is it smashed? Then you obviously did or didn't torque it enough. Take your time.
Before installing any plug be sure to gap them. ( read about gaping elsewhere) Any auto parts clerk can show you how.
The next two plugs are at the rear of the engine on the driver side. Remove the cover on the inside of the van by removing the glove compartment, the long narrow dash cover located just above the drink holders- it just pops out by prying under it with a screwdriver. These plugs are very particular in that if you don't rout the wires away from the exhaust manifold they will melt- especially the #5 plug. So be sure to install the wire in the routing clip/harness that is bolted to the engine.
The passenger side plugs are about the same as the driver's side, but for the front two you'll need to remove the plastic coolant container. It's just one bolt and you can leave the hoses in place, just move the whole container to the side. If you have AC then it's a little more difficult, but not much. The firing order is less confusing if you tape numbers on each end of the wires. The Cap and rotor should be changed when the wires are changed. All of this stuff pays for itself in gas savings and engine lifespan increasing. Always change the air filter every few months. They are cheap and save you more gas than just about any other tuneup part.
Good luck.

Check codes with OBD 2 scanner (you can get it done for free at Advanced Auto or Autozone most any chain auto parts stores that should give you your code for the engine light) If it is the oil service light (has a wrench beside the oil symbol should be amber in color and in the upper left side of display) you can reset that by putting the key in the on position (don't start it) push the gas pedal to the floor 3 times in a row light should blink a few times and turn off. If its the red oil light I would check the oil obviously if that checks out I would look in to replacing the sensor.

Either in the keyless entry module (if vehicle has keyless entry) on in a separate smaller (2 inch squarish with about 5 wires) module located on inside firewall above upper left corner of engine cover

For this question to be answered you must provide the number that is above the timing chain cover.

it is a 1978-1990 2 or 4 bolt main

Mine is located under the driver's seat.

Drain the water from your Chevy Express cooling system. Remove the water pump return hose. Remove the water pump belt. Remove the water pump retaining bolts. Reverse the process to install the new water pump.

its located in the transmission, drop the pan

the ecm on this van is on the passenger side behind the plastic kick plate

Front seating area, driver side, under dash, below steering column, mounted in relay block.

Its under the left side if you are looking at the car from the front. Get under the car and its kind of hiden near the exhaust pipes.

There is a heat sensor that allows the fan to stay on after the key is off to cool down the underhood temperatures. If the fan stays on as you have said, the sensor is most likely faulty or shorted.

* Disconnect the negative battery cable * Remove the air intake duct and the air cleaner housing assembly from the engine compartment * Disconnect the battery cable and the solenoid terminal connection from the starter solenoid * Remove the starter motor mounting bolts and detach the starter from the engine * Installation is reverse of removal

The answer I received from the premier lock-smith shop in Louisville, KY was "Probably". Generally, it has to be an identical "type" of keyless remote. Your best bet is an excellent locksmith. cost to reset is around 30.00 I was advised. (my question was on a 200l Impala)