why does my Cadillac Escalade T1XX (2021-Present) shake when I accelerate

Symptoms

• Vehicle shakes or vibrates when accelerating
• Steering wheel vibrates during acceleration
• Unusual noises from the engine or drivetrain
• Loss of power during acceleration
• Increased fuel consumption

Diagnostic Steps

1. Scan for error codes using an OBD-II scanner to check for any stored diagnostic trouble codes (DTCs).
2. Inspect tire condition and pressure; ensure they are properly inflated and free of damage.
3. Check wheel alignment and balance; look for signs of misalignment or unbalanced tires.
4. Perform a visual inspection of the engine and drivetrain components for any signs of wear or damage, including motor mounts and transmission mounts.
5. Test drive the vehicle to replicate the shaking and observe under different acceleration conditions.
6. Inspect the driveshaft and CV joints for play or damage if the issue persists after previous checks.

Solution

1. Preparation

• Tools Required: OBD-II scanner, jack and jack stands, tire pressure gauge, torque wrench, wheel alignment tool.
• Ensure the vehicle is parked on a flat surface and the engine is off. Disconnect the battery for safety.

2. Address Tire Issues

• Check Tire Pressure:
  • Use a tire pressure gauge to check all four tires. Inflate or deflate as needed to the manufacturer's recommended pressure.
• Inspect Tires:
  • Look for any uneven wear, bulges, or punctures. Replace tires if necessary.

3. Wheel Alignment and Balancing

• Alignment Check:
  • Use a wheel alignment tool or take the vehicle to a professional service to check alignment.
  • Adjust alignment settings to manufacturer specifications if out of range.
• Balance Tires:
  • If tires are unbalanced, remove them and use a balancing machine to balance each tire correctly.

4. Inspect and Replace Drivetrain Components

• Inspect Motor and Transmission Mounts:
  • Visually inspect mounts for cracks or excessive wear. Replace if necessary, using a socket set to remove and install new mounts.
• Check Driveshaft and CV Joints:
  • Inspect for excessive play. If damaged, replace the driveshaft or CV joints as required.

5. Reconnect Battery

• Reconnect the battery and ensure all connections are secure.