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In 1990 through 1992 General Motors used a different speedometer set up than the prior or later years for many Chevy, GMC, and other GM named brands. The circuit board that drives the speedometer& ...
How to perform a Voltage drop test(Post)This test checks for voltage being lost along a wire, or through a connection or switch. (see diagram below) Connect the positive lead of a Digital Voltmeter (DVM) to the end of the wire (or to one ...
How a signal filter can help your Tachometer read properly(Post)If your tachometer seems to have a bouncing needle, only seems to work in a small range, or floats on acceleration, a Tachometer Filter just may solve the problem. What the Tachometer circuit board d ...
General Motors VATS (Vehicle Anti-Theft System) wrong key, missing key, or erratic operation(Post)Restore starting on your GM when the VATS pellet key or reader circuit is the problem. Vehicle Won’t Start? Your GM’s VATS System Might Be the Reason If your GM uses the VATS (Vehicle Ant ...
Engine Noise Diagnostic Guide: Identifying Knocks, Clicks, and Taps in Classic GM V8s(Post)For classic GM and Pontiac owners, the engine often speaks before it breaks. Learning to "read" these sounds can be the difference between a simple bearing refresh and a catastrophic block failure.
Pontiac Fiero Speedometer Wiring and Troubleshooting Guide(Post)Pontiac Fiero Speedometer Wiring and Troubleshooting Guide The speedometer system in the Pontiac Fiero uses a combination of electronic components and wiring to accurately display vehicle speed. Unde ...
New item - 1985-91 GM GMC Truck Shift Indicator GM 25078571(Post)1985-91 Chevy GMC Truck Shift Indicator GM 25078572,Fits: Chevy Blazer, C10, C20, C30, K10, K20, K30, R10, R20, R2500, R30, R3500, Suburban, V10, V20, V30, V3500, GMC: C1500, C2500, C3500, Jimmy, K1 ...
Trouble shooting the tachometer after the circuit board has been replaced.(Post)Tachometer Still Not Working After Replacing the Circuit Board? If the tachometer still is not working after replacing the circuit board, the problem may be somewhere else in the system. This guide p ...
1984-86 Pontiac Fiero Headlight Repair(Post)1984-1986 Pontiac Fiero used a Torque Switch in the Headlight Actuator and external Relays to switch off and on the Actuator power circuit. Here's how it works: The headlight door motors reverse di ...
What do Pontiac Fiero Diagnostic Trouble Codes mean(Post)Code 12This code will flash whenever the diagnostic terminal is grounded with the ignition in run, and the engine off. If this code appears while the engine is running, no reference pulses from the ...
About(Page)About WestCoast AutoParts.com WestCoast AutoParts.com is the online store of WC Parts Source LLC. Founded in 2013, we evolved from GM Performance, a specialty parts business established in the e ...
Blog e-Articles(Page)Brief posts of information to help repair and maintain your Camaro, Firebird, Fiero, or other classic GM vehicle.