2008 Chevrolet Silverado 2500HD - Page 6 - Answered Questions & Fixed issues


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

Chevrolet... | Answered on Feb 25, 2018 | 88 views


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 .

Chevrolet... | Answered on Feb 11, 2018 | 3,191 views


Headlight switch

Chevrolet... | Answered on Feb 03, 2018 | 98 views


first question we ask is this. are all 4 tires the same diameter??? if two are newer than the other two it will do as you describe. also if you are trying to drive it in 4 wheel on dry pavement dont. youll break things to dont want to know about and they are expensive.

Chevrolet... | Answered on Feb 01, 2018 | 28 views


Did you change the shocks?

Chevrolet... | Answered on Jan 23, 2018 | 26 views


No such code. Codes START at P0100.

Chevrolet... | Answered on Jan 18, 2018 | 40 views


You need a code reader to start the process of fining the issue. The traction control is under the vehicle and is tied to the break system. Drivers side on the frame rail. If the vehicle wont start you may have a failing ECM

Chevrolet... | Answered on Jan 18, 2018 | 28 views


Slide under the front of the engine,do you see a crank sensor reading off the front crank pulley?If you see one on your model,99% of the time it's that sensor that fails.

Chevrolet... | Answered on Jan 16, 2018 | 23 views


Gm makes lots of different trucks with lots of different engines using lots of different transfer cases. How about not keeping all that info a secret

Chevrolet... | Answered on Jan 15, 2018 | 81 views


both sides of the block

Chevrolet... | Answered on Jan 06, 2018 | 161 views


What year is the truck ?

Chevrolet... | Answered on Jan 05, 2018 | 203 views


possible bad ground to the lights and it would cause this problem may have happen when gas thank was replaced

Chevrolet... | Answered on Jan 02, 2018 | 45 views


On the inside of the front bumper, there will be 2 a L&R.

Chevrolet... | Answered on Dec 22, 2017 | 36 views


This is a communication cod that corresponds to the throttle motor. The proper way to diag. this is with a DSO and to view the waveform of the communication going to the throttle motor. (see attached information.

Chevrolet... | Answered on Dec 22, 2017 | 229 views


No it will in no way work/fit.

Chevrolet... | Answered on Dec 22, 2017 | 19 views


No it will in no way work.

Chevrolet... | Answered on Dec 22, 2017 | 20 views


Are you saying the engine is overheating? If so, check out the cooling system (particularly the fluid, fluid level and thermostat). It is possible the temperature sensor failed again (maybe a wiring problem, incorrect or cheap sensor), but more likely the cooling system temperature is very close to the setting of the sensor, and depending on driving conditions, temperature could be bouncing up and down around the sensor setpoint.

Chevrolet... | Answered on Dec 21, 2017 | 180 views

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