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1999 GMC Jimmy Support Question

1999 GMC Jimmy Support Question

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Question posted by scakins on November 3rd, 2014

Heat Problems

The air will not switch from cool to hot when blowing. Stays luke warm at all times. What is the problem?

Current Answers

Answer #1: Posted by sabrie on November 3rd, 2014 5:48 PM
This answer was accepted by the poster of the original question.
sabrie

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Related Manual Pages

Owner's Manual - Page 34

...air bags. Air bags supplement the protection provided by opening a window or door. Air bags should get them, the air bag system won't be warm... of the bag that some new parts for a short time. Air bag inflation doesn't prevent the driver from seeing or from... breathing problems but not too hot to inflate only once. yellowblue How does an air bag restrain? After an air bag inflates...
Owner's Manual - Page 73

... so equipped. 2-9 See "Engine Exhaust" in the Index. That will unlock. All doors will force outside air into the lock button and turn it counterclockwise to unlock the glass. D Turn the fan on your heating or cooling system to its highest speed with the setting on or under the instrument panel, open them...
Owner's Manual - Page 122

...by pressing the US/MET switch. 2-58 Display the temperature in a complete 360_ circle three times, and the compass will appear on the display. To correct the problem, drive in either degrees ... control switches are displayed at the front of the display. Variance is new, the compass may be icy, and that road conditions may function erratically. If the outside air temperature ...
Owner's Manual - Page 141

... away. For more information on the instrument panel, which shows the air bag symbol. This means the system is an electrical problem. Have your air bag system may have a problem with the light on then, have problems with a generator drive belt, or another electrical problem. Charging System Indicator Light The charging system light will be certain...
Owner's Manual - Page 144

...but you don't have it fixed so it will come on when you start your engine is too hot! If the regular brake system warning light is also on, you don't have been operating your ...With the anti-lock brake system, this light will be ready to warn you if there is a problem. If the light stays on, or comes on then, have anti-lock brakes. That's normal. See "Brake System Warning...
Owner's Manual - Page 154

.... Standard Climate Control System Fan Control The knob on the control panel allows you to choose the direction of the heating system control panel controls the fan speed. A/C: This setting cools the air entering your vehicle. To decrease airflow, move the knob clockwise. yellowblue Comfort Controls With this system, you can control the...
Owner's Manual - Page 156

... will blow at full speed. Air will allow about 20 minutes for the system to adjust the temperature if necessary. 3-4 When the system is set to heat or cool any function. With the system in full auto control (both the fan and mode knobs in AUTO, it will not cause the system to . Full Hot...
Owner's Manual - Page 157

... avoid blowing cold air in this section. That is cooled, the airflow will flow from the air outlets. Be careful not to set the climate control system operations yourself, or let the system work for you have the fan set on the fan until warm air is to choose the direction of the floor air outlets for heat...
Owner's Manual - Page 159

... power. On cold days, use BI-LEVEL A/C to deliver warm air to the floor and cooler air to heat the passenger compartment in your heating system will produce warmer air faster to the instrument panel outlets. See "Engine Coolant Heater" in extreme humid or cold conditions. On cool but sunny days, use HEATER with the temperature knob...
Owner's Manual - Page 160

... cooling is not moving . When the vehicle is needed, use a razor blade or something else sharp on again. Press the button until the light in the switch comes on the rear window. It will help to RUN. You can get outside air through by pressing the button. If you do, you need additional warming time...
Owner's Manual - Page 203

... test is going on . If there's a problem with the traffic and allow realistic following distances, ...stay on . heavy acceleration followed by heavy braking -- rather than keeping pace with traffic. But you will be harder to cool... between hard stops. Anti-Lock Brakes (ABS) Your vehicle has anti-lock brakes (ABS). This is an advanced electronic braking system that will still have time...
Owner's Manual - Page 232

... wide or cut across the center of special problems. Examples are long grades, passing or no-passing zones, a falling rocks area or winding roads. They could get so hot that they wouldn't work of a hill, be... braking or even none going down CAUTION: If you stay in gear when you can climb the hill better. The lower gears help cool your own lane. Your brakes will have your engine ...
Owner's Manual - Page 247

... cylinder. Otherwise, both braking systems won't work well. CAUTION: If you do, it only recirculates the air inside your vehicle. (See "Comfort Controls" in the rear or another opening, drive with your front, main heating or cooling system on and with the fan on the master cylinder that sends fluid to the rear...
Owner's Manual - Page 262

... the problem may not...hot when you: If you no longer have the warning, turn it cools... down the accelerator until it off the engine and get the overheat warning with no sign of steam, push down . otherwise, shift to be too serious. Sometimes the engine can drive. If you still have the overheat warning, you 're in a traffic jam, shift to full hot...hot day. If you can get service...
Owner's Manual - Page 265

... warning. CAUTION: Adding only plain water to the Coolant Recovery Tank If you haven't found a problem yet, but you or others could catch fire and you wouldn't get too hot but the coolant level isn't at the ADD mark, add a 50/50 mixture of clean,... and the proper coolant mixture. Your engine could be dangerous. With plain water or the wrong mixture, your cooling system can be burned.
Owner's Manual - Page 267

... pressure cap. 5-15 They are under pressure, and if you badly. Wait for the cooling system and radiator pressure cap to cool if you ever have to turn the cap when the cooling system, including the radiator pressure cap, is hot. even a little -- they can blow out and burn you turn the radiator pressure cap --
Owner's Manual - Page 271

...making extra shifts. It is not engaged. A rear blowout, particularly on a curve, acts much more air to a stop well out of a tire, it's much like a skid and may hear an increase ...In most everyday driving conditions, the clutch is merely the cooling system functioning properly. If a Tire Goes Flat It's unusual for a tire to "blow out" while you're driving, especially if you should ...
Owner's Manual - Page 313

... to blow out and burn you spill coolant on a hot engine. when the engine and radiator are hot enough. Never turn the radiator pressure cap -- When to Check Power Steering Fluid It is not necessary to regularly check power steering fluid unless you suspect there is a leak in this system could indicate a problem. yellowblue...
Owner's Manual - Page 334

... It could affect the braking and handling of your vehicle, make your tires lose air and make you have a collision in the Index for replacement. You can be ...used wheel on your vehicle because there's not enough clearance. They can also cause problems with bearing life, brake cooling, speedometer or odometer calibration, headlamp aim, bumper height, vehicle ground clearance and ...
Owner's Manual - Page 345

...problem, be covered by your vehicle unless you replace a bad fuse with your dealer first. When the current load is too heavy, the circuit breaker opens and closes, protecting the circuit until the motor cools... will stop until the problem is protected by electrical problems. Look at the silver-colored band inside the fuse. Your vehicle has an air bag system. This greatly...

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