dual heating and cooling sysem the passenger side turns cold and gives off nothing but COLD air

I have a '99 Grand Cherokee Limited with dual heating and cooling system. The heater works fine for a very short time (15 or 20 minutes), after which time the passenger side turns cold and gives off nothing but COLD air. How do I fix this problem?

No Heat in my 2003 Chevy Silverado 2500HD

I have a 2003 Chevy Silverado 2500HD with a 6.0 engine. This morning I Started my truck and let it set for 15 minutes to warm up and defrost the windshield. When I went back out there was no heat at all coming from the defrost or the heater. I drove it around after scraping the windshield and still no heat. It was working fine before, what could it be?

Response:

As long as your coolant level is full, you may have a bad thermostat or a clogged heater core. With the engine running at normal operating temperature, check the heater hoses to see if both sides are hot or if one side is cold. If one side is cold, then you have a clogged heater core and it will need to be replaced. Look for about 8 hours for this job. 

Heater Blower Motor doesn't work in my 2007 Chevy Silverado

GM TRUCK Inoperative blower motor.

The blower motor on some 2007 - 2008 Chevy Silverado and GMC Sierra extended cab and crew cab models built before 4/1/08 may fail to operate. If the fuse is good and the circuit up to the motor has power, says GM, the motor has probably failed. Water intrusion is the likely villain. Installing an upgraded blower motor with a new-design moisture shield (Part No. 25973845) should prevent further trouble.

My low coolant light came on, What could it be ?

My son's 2000 Saab 95 SE said engine coolant low so he added coolant. Here it is 2 days later and it is saying it again. When he filled it the first time he saw that there was still some coolant in the reservoir but it was low.. Any ideas how serious it could be?

Answer:

I would check two things.

1. Is there enough coolant. If there is not enough coolant again you need to check if the coolant is leaking out. You can rent a pressure tester from Autozone to find leaks. It's very simple to use and very effective. It's a radiator cap with a hand held pump attached, you take your cap off and attach the pump. Then pump and listen for leaks (done with car off so leaks are easy to find).

2. Coolant level sensor. If you have enough coolant, yet the light is still coming on then the sensor is bad. The sensor should be located on the reservoir, if you have coolant then it's giving a false reading.

I have A 2004 Jeep Grand Cherokee reading code p1281

I have A 2004 Jeep Grand Cherokee reading code p1281 what is it and how do I fix it . I know it is a factory direct code it says fuel air metering p1281

Answer:

This code actually means the engine stays cold too long. This could be caused by extremely cold weather, malfunctioning ECT sensor, or a thermostat that does not let the engine warm up. In most cases, replacing the thermostat will fix this issue.

SYMPTOM P1281-ENGINE IS COLD TOO LONG WHEN MONITORED The ignition key on, engine running, Ambient Temperature greater than 20°F ; and Vacuum is less than 17 inches Hg . SET CONDITION The engine does not warm to 85°C (181°F) while driving for more than 3 minutes and less than 1 hour depending on Engine load and Start up Temperature