20 Most Recent 2008 Chevrolet Silverado 2500HD - Page 8 Questions & Answers

Any DTC"S - diagnostic trouble codes ? The charging system on that vehicle is computer controlled . Are You Smarter Than Smart Charging System MOTOR

I hope this helps a little, you said the fuse box panel is gone....so how do you know some fuses are missing?

I just bought a 1988 silverado also, the wipers ,power windows and windshield washer fluid only work "when they want to" I think I have a bad ground somewhere.

Do you hear the turbo whine/high pitched noise when it's pulling?Do you know for a fact if the turbo is working?Is fuel pressure correct? Is the exhaust system sound very quiet?If it does then it may be restricted.

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The lights have little adjustment screws and the lights are either spring mounted or will have plastic inserts .The whole idea is to be able to move the lights side to side or up and down to a degree .The best way to adjust them is when its getting dark park in front of a wall or garage door turn the lights on so you can see witch way are pointing. You want the drivers side pointing slightly down and toward the middle of the road and the passenger side can be higher but under 45 degrees and more in line with the side of the road .Head lights are for outer people to see you. So you don't want to blind people coming the other direction head on crashes are never good.

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check throttle position sensor output voltage(i think it is the green wire on sensor plug. you can slid a straightened paper clip in beside wire. turn key on, engine Not running, as you move the accelerator voltage should increase. at no accel. it should be around .5 volts and it should increase as you press accelerator. all the way should be above 4 volts. move accelerator real slow, if there is a spot when voltage goes away, sensor is bad.

the problem is not the compressor but the head pressure is to high and the high pressure switch is shutting it off You say really cold while driving but on/off when stationary That indicates that the fan in front of the condenser is not working and the high pressure gas is not converting back to liquid 2 possible items to check fan--fan relay fan relay fuse and excessive gas in the system take it to an accredited ac specialist shop and have the pressures checked At this point I am thinking excessive gas

No fuse The body control module (BCM) monitors the signal circuit of the cruise control switches. The BCM relays the cruise control switch status to the engine control module (ECM) via the GMLAN serial data circuit. The ECM uses the status of the cruise control switch to determine when to capture and maintain the vehicle speed. The ECM monitors the vehicle speed signal circuit in order to determine the desired vehicle speed. The ECM uses the throttle actuator control (TAC) motor in order to maintain the vehicle speed. For further information on the TAC System, refer to Throttle Actuator Control (TAC) System Descriptionfor the 4.3L engine or Throttle Actuator Control (TAC) System Description for the 4.8L, 5.3L, 6.0L, 6.2L or 7.0L engines. Voltage is supplied to the cruise control switch via the steering wheel control switch reference voltage circuit supplied by the BCM. Does the light come on ? DTC P0575: Cruise Control Switch Signal Circuit DTC B3794 08: Cruise Control Function Request Circuit Signal Invalid DTC B3794 61: Cruise Control Function Request Circuit Actuator Stuck DTC B0835 00: Cruise Control System Active Indicator Circuit The cruise control switch contains an LED that illuminates to indicate the cruise control system has been switched ON. Voltage is applied through the ON/OFF switch to the LED when the switch is pressed. The body control module (BCM) provides the ground path for the LED through a dedicated LED control circuit. Pressing the switch again opens the switch and the lamp turns OFF. DTC P0571: Cruise Control Brake Switch Circuit DTC P0703: Brake Switch Circuit Your best bet , take it to a qualified repair shop .

Headlight switch

4wd is best for wet or dirt roads. When on dry and the tires are not all the same wear size. You can and will break parts. Transfer case tends to break easy. Most times you should be in neutral to get it into low 4wd. The clunking your hearing when shifting from 2wd to 4wd is the transfer case and driveshafts coming unsprung from the extra torque of not having the same size tread tires. One tire been less then the other 3 can screw it up. May need to buy 4 new tires or just stay in two wheel drive unless you get stuck