Question about 1999 Chevrolet Astro

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Wheret is the heater circuit?

Where is the heater circuit on my 1999 Chevrolet astro van? what causes the code po 155 &po 155pd to come up?

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  • Chevrolet Master
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P0155 is an O2 sensor heater circuit problem Bank 2 sensor 1. Replace the O2 sensor closest to the engine on the passenger side. The heaters are built into the sensor. No repairing them.

Posted on Jun 08, 2014

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Posted on Jan 02, 2017

  • 625 Answers

SOURCE: 1999 Chevrolet Astro Van problem

the head lights have tree wires goig to it one groun one gets power when high beams on the 3rd gets power only with low beam on test the wires or try by plugin a good known head light to conector if it works with low beam then replace both head ligts because head light come with two bulbs in one high and low

Posted on Jun 02, 2008

  • 2 Answers

SOURCE: Chevrolet Astro -89 electrical diagram

nowhere, you have to buy one for 8.00

Posted on Apr 07, 2009

dnewcombe1
  • 1564 Answers

SOURCE: How to replace turning signal switch chevrolet

If you have a wheel puller(steering wheel) then the rest is easy. If you don't it's best to grab a repair manual because there are certain little tricks that should be known before attemting to do this.

Posted on Jun 20, 2009

  • 5 Answers

SOURCE: our 2001 Chevrolet Astro Van heater not working?

Could be a bad heater core, any fluid leaking around it...check under the carpet and padding if you don't see anything under it on the ground. Your coolant may also be low, and it isn't circulating to the heater core, or a vacuum line may be off the hot/cold gate on the heater box, there are a lot of possible causes, but i would check for leaks and fluid level first

Posted on Nov 28, 2009

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SOURCE: I have a 2000 chevy Astro Van with approx 200,000

replace sensor between catalytic convertor and muffler

Posted on May 11, 2010

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1 Answer

Remove the rear heater core on a 99 astro van


remove the inside trim panels on the left hand side. Most "snap" into place, but look for screws first before pulling on the panel edges.

Dec 03, 2014 | 1999 Chevrolet Astro

1 Answer

What does the code po 155 mean


Oxygen O2 Sensor Heater Circuit Malfunction (Bank2, Sensor1)

Apr 14, 2014 | 1999 Chevrolet Astro

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I have a 98 Astro van and it will start just fine every morning and run idle just fine...I have it parked on a slight downhill slant, now I put in (R) and do not any problems..Now after backing into a...


The PO 300 is random cylinder misfires & I fail to see why
you would not have checked for codes & found that issue
and corrected it within days of getting any codes

It also sounds like you have a transmission oil leak & are low
on fluid

Aug 29, 2013 | 1999 Chevrolet Astro

1 Answer

1999 Chevy astro van won't start


Had the same issue with our 1999 chevy astro van, would crank but would not start. It had been raining and windshield had a leak, after 2 days of no rain it started. Pulled codes and was the Security system in the ignition switch. Hope this helps.

May 04, 2012 | 1999 Chevrolet Astro

2 Answers

1999 astro van misfire


The easiest solution to the misfire is to go down the line and eliminate the things you have fixed or not fixed to help eliminate what is causing your misfire, click on this link below to better help you understand what you need to look at to solve your problem.
http://www.obd-codes.com/p0300

Jun 10, 2010 | 1999 Chevrolet Astro

1 Answer

99 astro van p0300 code


po300 is a multible miss fire code like you have more than one spark plug breaking down and causing it to set a code.have you tried tuning up the engine with plus and wires?

Feb 14, 2010 | 1999 Chevrolet Astro

1 Answer

Our 2001 Chevrolet Astro Van heater not working?


Could be a bad heater core, any fluid leaking around it...check under the carpet and padding if you don't see anything under it on the ground. Your coolant may also be low, and it isn't circulating to the heater core, or a vacuum line may be off the hot/cold gate on the heater box, there are a lot of possible causes, but i would check for leaks and fluid level first

Nov 28, 2009 | 1999 Chevrolet Astro

1 Answer

1994 astro van


Is the engine warm? If no, replace the thermostat. If yes. Is their cold air coming from the heater outlet? If no air look for the fan or heater control .

Dec 29, 2008 | 1994 Chevrolet Astro

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