1A Auto Video Library
Our how-to videos have helped repair over 100 million vehicles

Top 5 Issues With Cadillac CTS

Share on:
  1. step : Timing Chains (0:24)
    • Timing chains can stretch, which causes the camshafts to turn out of sync with the crank shaft and pistons.
    • Diagnosing or repairing the timing chain requires dismantling the front of the engine.
    • Pushed out chain tensioners indicate stretched chains
    • The best prevention is regular oil changes and maintaining proper oil level
  2. step : Door Handles (2:33)
    • The front door handles trigger an electric actuator to open the door latch
    • Diagnosing these requires removing the door panel
    • Disconnect the door handle electrical connector
    • Test the door latch by jumping the blue and brown wires together and connecting them to ground
    • If the door latch actuates you know you need a new door handle switch.
  3. step : Wheel Speed Sensors (ABS Sensors) (4:54)
    • If able, use a scan tool that will read the ABS sensors live
    • Turn each wheel by hand
    • Erratic or blank data for that wheel indicates a sensor problem
    • Visually inspect the wheel sensor, wire and connector for damage that would break the circuit
    • Visually inspect the wheel hub for damage
    • Cracks in the wheel hub or bearing will cause erratic readings
  4. step : Evap Codes (8:33)
    • Check the gas cap, and filler neck rim for wear, rust, or damage
    • Check the evap purge solenoid located above the passenger side valve cover
    • Inspect the electrical connector for damage
    • Inspect the hose fittings for leaks
    • Vacuum test the purge valve for leaks
    • Check the evap canister vent valve, located above the rear differential
    • This is a difficult to reach location that requires removing the rear suspension cradle
  5. step : Camshaft Position Codes (10:11)
    • The camshaft actuators control the variable camshaft timing
    • The solenoids are located outside the camshaft cover
    • Clean oil at the proper level is essential as the system operates with oil pressure

Tools needed for replacement:

    Diagnostic Tools

  • Scan Tool

  • General Tools

  • Jack Stands
  • Flashlight
  • Floor Jack

  • Materials, Fluids, and Supplies

  • Wires
  • Wire Terminals

How to Reprogram your New Throttle Body 02-06 Nissan Altima

How to Reprogram your New Throttle Body 02-06 Nissan Altima

Learn how to program a new throttle body sensor. In this video 1A Auto shows you how to set up your new throttle body sensor for your 02-06 Nissan Altima.

Search Videos
Go To Top


Same Day Shipping

In stock orders ship same day when ordered by 4pm ET. Need your parts faster? Select expedited shipping at checkout.


Guaranteed to Fit

Our team of auto experts work hard to provide you with the highest quality, direct fit replacement auto parts. We know not all auto parts are created equal. This is why we enforce a strict level of product standards and sourcing with every part.


USA Customer Support

Our goal is to exceed our customers' expectations every day. We are a team of passionate auto enthusiasts who are here to help. If you have a question about our parts or a repair contact us.


Instructional Video Library

Our 1A Auto Video Library has thousands of how-to auto repair installation videos specific to year, make and model. Each video guides you with step-by-step instructions to empower you to tackle your own repairs on your car, truck, SUV, or van.