Recent content by sawmkw

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    Another 99 (5.7) with no heat question

    Why is this question important? I checked my thermostat a while back and it is opening and closing but my engine temperature never gets much above the hash mark between 100 and 210 degrees so maybe 160? Neither do I have vacuum at the heater control valve.
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    Heater Control Valve Vacuum Question

    I see that there is a vacuum line to some sort of canister switch on the firewall of my 96 Tahoe. There is manifold vacuum present to that switch but no vacuum out to the heater control valve. When is vacuum present to the heater control valve? With AC on or without? I'm trying to diagnose a...
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    Blower Not Working

    I'll give this a try. I have replaced the fan switch in the past and it might be shot again. Is there a wiring diagram for the Heater/AC circuit somewhere? I haven't been able to find one.
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    Blower Not Working

    Well, I replaced that resistor with an AC Delco and no joy.
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    Blower Not Working

    I have a 96 Tahoe and have looked through the dozens of posts about the blower and resistor but have not really found an answer. A couple of years ago I replaced the resistor and the fan switch. Earlier this year the fan would not come on at all or only on high which led me to think resistor...
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    4x4 Fuse Blows

    The backlighting on the 2HI 4HI 4LO has changed so that only 2HI is backlit. I could swear that all were originally backlit. I can still select 4HI and the indicator will flash but of course does not go solid. I can hear the transfer case engaging. The Transfer Case fuse (#2) is okay but the...
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    The official how many miles on your Tahoe Thread

    I have a 96 with 289,000. Bought it with 140K on it.
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    4x4 Fuse Blows

    The backlighting on the 2HI 4HI 4LO has changed so that only 2HI is backlit. I could swear that all were originally backlit. I can still select 4HI and the indicator will flash but of course does not go solid. I can hear the transfer case engaging. The Transfer Case fuse (#2) is okay but the...
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    Coolant Disappearing

    I recognize that this forum is not to be used for advertising or to drum up business but it does brings together people with a vast amount of knowledge and helps people like me determine whether they have the skills to do a repair. After reading the posts and recognizing that OJustRacing (John)...
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    Intake Gasket Replacement

    What should I expect to pay to have the Intake manifold gasket replaced on a 1996, 5.7L Tahoe? I'm guessing that hoses, thermostat and water pump should be done at the same time?
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    Coolant Disappearing

    A faulty water pump can dump coolant into the oil pan???
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    Coolant Disappearing

    My best guess is that the coolant was in the oil for 2-3 days although it did get a fair number of miles on it (50 or so) during that time. The oil was chocolate in color but no globs as if there had been water in the oil for an extended period of time. From what I have been able to find out...
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    Coolant Disappearing

    It is a 1996 which has been taken care of pretty well. Oil has been changed every 3500-4000 miles. The oil now looks like a bad chocolate milk shake and is way overfilled according to the dip stick. What is the best way to check whether this is an intake manifold or head gasket?
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    Coolant Disappearing

    Coolant Found! Seems it has been draining into the oil pan. I see it on the dip stick and it's draining in while sitting. Still sound like a head gasket? It was actually running fine with no engine lights although idling a little rough.
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    Coolant Disappearing

    I noticed yesterday that the heater went cold and sure enough, there was no coolant in the expansion tank. I topped it off and then noticed the temp going up then down and when I checked it again, it needed filled again. All in all, I ended up adding 2 gallons. When I used to check it...
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