Chevrolet Avalanche - Recent Questions, Troubleshooting & Support - Page 4
My 2002 chevy avalanch wont shift into 3rd or 4rth
1- You have to check the transmission oil level.
(Engine running in the park or neutral. )
2- Retrieve transmission trouble code with a scanner.
3- Depends on what code you have
4- Find out if your problem is electrical or mechanical or hydraulic.
5- It could be the 3-4 solenoid, 3-4 shift valve stuck inside valve body..........and so on.
6- At the cluster display the PRNDL display all lights state = on. If not the PRNDL switch on the side of transmission water intrusion.
I believe you need a good Technician if you don't find it.
There are so many things.
Hope it helps.
I have a 07 Avalanche
unfortunately it is probably the lock actuators on all three, this is a known problem on those, I have worked at a chevy dealer for along time and have seen this many times usually due to water intrusion in the connector at the lock actuator, have been lucky a few times and been able to clean the connectors..
My 2003 chev Avalanche 2500 keeps going into limp mode
Code reads throttle body even after putting new one on
????
What is the DTC - diagnostic trouble code ? No code tells you a part is bad . Diagnostic testing procedures are given for each code the vehicle can set . Your vehicle can set numerous code's for the electronic throttle control an not one of them tell's you out right to replace the throttle body or the APP sensors . Looking at factory service repair info for the code an doing diagnostic testing befor replacing any parts should be done.
The throttle actuator control (TAC) system delivers improved throttle response and greater reliability and eliminates the need for mechanical cable. The TAC system performs the following functions:
• Accelerator pedal position sensing
• Throttle positioning to meet driver and engine demands
• Throttle position sensing
• Internal diagnostics
• Cruise control functions
• Manage TAC electrical power consumption
The TAC system components include the following:
• The accelerator pedal position (APP) sensors
• The throttle body assembly
• The throttle actuator control module
• The powertrain control module (PCM)
Accelerator Pedal Position (APP) Sensor
The accelerator pedal assembly contains 2 individual APP sensors within the assembly. The accelerator pedal position (APP) sensors 1 and 2 potentiometer type sensors each with 3 circuits:
• A 5-volt reference circuit
• A low reference circuit
• A signal circuit
The APP sensors are used to determine the pedal angle. The control module provides each APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensors then provide the control module with signal voltage proportional to pedal movement. APP sensor 1 signal voltage is low at the rest position and increases as the accelerator pedal is applied. APP sensor 2 signal voltage is high at the rest position and decreases as the accelerator is applied.
Throttle Body Assembly
The throttle body assembly consists of the throttle body, the throttle position (TP) sensors, and the throttle actuator motor. The throttle body functions similar to a similar to a conventional throttle body with the following exceptions:
• An electric motor opens and closes the throttle valve.
• The throttle blade is spring loaded in both directions and the default position is slightly open.
• There are 2 individual TP sensors within the throttle body assembly.
The TP sensors 1 and 2 are potentiometer type sensors each with 3 circuits:
• A 5-volt reference circuit
• A low reference circuit
• A signal circuit
The TP sensors are used to determine the throttle plate angle. The control module provides each TP sensor a 5-volt reference circuit and a low reference circuit. The TP sensors then provide the control module with signal voltage proportional to throttle plate movement. Both TP sensor signal voltages are low at closed throttle and increase as the throttle opens.
Your best bet , take it to a qualified repair shop.
My 2005 avalanche will not engage into four wheel low
Try shifting the shift selector into Neutral first then try engaging 4wd low. If that doesn't work try shifting into 1st gear and then try engaging 4wd low. The information is inside your owners manual but if this doesn't work please let me know. Also is the light on for which mode your truck is in (2wd or 4wd high)? If not, you may want to check for a blown fuse.
Where is pressure regulator located 2006 chevy avalanche
pressure regulator ???? For what , fuel system ? ABS etc .... If fuel pressure reg. inside gas tank
The fuel pressure regulator is a part of the fuel sender assembly, eliminating the need for a return pipe from the engine. A returnless fuel system reduces the internal temperature of the fuel tank by not returning hot fuel from the engine to the fuel tank. Reducing the internal temperature of the fuel tank results in lower evaporative emissions.
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