computer

So I bought this Jimmy 4x4 that has been sitting for 2 years, threw in a battery and she started right up. It's running rough, the CEL/SES is on and so is the battery light. I went to plug in my OBD2 computer but it says the connection failed, tried a different one and same thing. Anyone have...

Where on the vehicle is the 1999 Jimmy SLT climate control computer located?

The computerized climate control worked fine until suddenly it started cycling hot & cold & blowing high & low, no matter what the setting. There are even strange sounds of vents opening/closing when the system is off. The A/C appears OK, as the system is charged & the compressor engages when...