20 Most Recent 2003 Chevrolet Astro - Page 4 Questions & Answers

Replace the complete heater control vacuum line over the motor with rubber vacuum tubing.
The heater vacuum line connects on the drivers side of the engine halfway back on the intake manifold.Run the new line to the heater vac connection at the passenger side at the right front in the engine compartment.
I change 2 a week....this should be where your problem is.

Check vacuum line running from left side of fuel injection to the right side by the blower motor it is a small diameter line. if that came apart you will only get air coming out of defroster exits.

on my astro I had to have it towed to dealer and they replaced distributor cap and rotor , the cap had dampness in it. I havent had a problem since

Is your compressor kicking on? If not then maybe the refrigerent is low enough to not activate the low pressure cycling switch. Maybe you blew a fuse or the relay has gone bad.

Its possible that this image helpfull (click for zoom)...



From GM.

The problem could be with the electrical system. Either there is not enough voltage going to the system or the starter system is bad.

If you have a voltmeter you can measure the voltage. Battery should be at least 12.7 for good starts. You can also jump start the car by connecting it to an idling vehicle using jumper cables. If the car starts you battery may be weak or did not charge properly. To test if the battery is the issue, remove the jumper cable and the negative terminal of the battery. If the motor dies then the problem is with the alternator. It may not be charging the battery correctly.

The problem may be with the starter. It could be a bad starter motor or relay. You can directly connect the starter to the battery to test if it cranks. If it does, have the relay inspected.

Are the rear brakes drum? If so they need to be adjusted. There is a little slot on the backside of the brake assembly that usually has a plastic or rubber cover. Jack the rear end up and remove that cover to expose a little slot. Use a small flathead screwdriver to adjust the ratchet mechanism. To find out which way to turn it spin the wheel occasionally to see what direction will tighten the shoes. Adjust the shoes untill the wheel stops spinning then back off a turn.

This is a normal condition, they should trun off when you open any door.

The vehicle computer's Traction Control System (TCS) has detected wheelspin on one or more wheels that's greater than the detected speed of the vehicle. That is, it knows you're spinning the tires and not going anywhere (or not really going that fast). It compares the rotation of all wheels to that of the slowest moving wheel (or slowest wheel that has a sensor), and slows down the faster of the bunch. Since it's not a full-time 4-wheel drive (where all wheels move the same speed all the time), it allows some wheelspin for outside wheels around corners, but keeps the wheels in check with the brakes. Some Traction Control Systems rely on cutting engine power to stop wheelspin, while others activate the brakes on the faster-moving wheels.