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My cruise control don't work in my 99 Chevy lumina
A VERY clever Fixya Expert writes;
Anonymous Jan 30, 2022
Cruise Control Cable
Disconnect the cruise control cable at the module and the throttle lever. Refer to Cruise Control Cable Replacement .
Ensure the cruise control cable moves in and out of the cruise control cable casing freely and smoothly.
Replace sticking or binding cables. Refer to Cruise Control Cable Replacement .
Replace the cable(s) if the adjuster lock does not hold under normal operating conditions. Refer to Cruise Control Cable Replacement .
This is the part that fails most, like in the video above.
Turn the ignition switch on.
Set cruise control switch to ON.
The cruise control switch indicator lamp turns on.
Does the lamp turn on?
Cruise Control System Circuit Description
The stepper motor cruise control (SMCC) is a speed control system which maintains a desired vehicle speed under normal driving conditions. However, steep grades may cause variations in the selected speeds. The system has the following settings:
• RESUME SPEED
The cruise control module contains an electronic controller and an electric motor. The controller monitors the speed of the vehicle and operates the motor. In response, the motor moves a connecting strap that is attached to the cruise control cable. The cable moves the throttle linkage which varies the throttle position and maintains the desired cruise speed. The cruise control module contains a low speed limit which prevents engagement of the system below a minimum speed, approximately 25 mph.
The mode control switches are located on the multi-function turn signal lever. Cruise control is in Standby Disabled mode until all conditions which are inconsistent with cruise control operation are cleared.
With the ignition switch in RUN, battery voltage applies to terminal F of the cruise control module. When you move the slider switch to the ON position, battery voltage applies to terminal A of the cruise control module connector. If the driver of the vehicle does not depress the brake pedal, battery voltage is present at module terminal D. When the driver depresses the brake pedal, battery voltage is present at module terminal G. Terminal G must see current flow through the center high mounted stop lamp bulbs in order for cruise to operate (disable) properly.
When the driver moves the slider switch to the R/A position, battery voltage applies to terminal C of the module. With the Set switch pressed, battery voltage is present at module terminal B.
Cruise control module connector terminal K is the speed signal terminal. In operation, voltage will oscillate between a high of 4 to 5 volts and low of near ground. Cruise Control Module terminal E is ground.
Terminal J signals the PCM when cruise control is engaged. The PCM determines the correct shift pattern for the transmission.
The PCM uses terminal H in order to inhibit cruise control when any of the following conditions, which are inconsistent with cruse operation, occur:
• Vehicle speed is less than 25 mph
• When the park/neutral position (PNP) switch indicates the following gears:
- 1ST GEAR
• When an under battery condition or an over battery condition exists
• With low engine RPM
• With high engine RPM (fuel cut-off)
99 lumina keeps blowing 5 amp starter fuse, I
Replace the starter relay in the fuse box behind the glove box. The fuse ONLY powers the control coil portion of the starter relay. If it's blowing, there's a short in the winding or a short between the relay and the theft deterrent module. Bad relay is most likely culprit
Try the tps, throttle position sensor, and the idacv, idle air control valve. Even sometimes the temp sensor could be bad, telling the motor its cold when its really hot..
1999 chevy lumina
New alternators can go bad quickly or have bad diodes from the start . Have the alternator load tested and a diode check done on it .
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