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HOMESERVICE MANUALSCADILLAC2011ESCALADE BASE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 920 (AUTOMATIC TRANSMISSION - ALLISON - REMOVAL & INSTALLATION, SERVICE, OVERHAUL, TROUBLESHOOTING & DIAGNOSIS)DIAGNOSTIC INFORMATION AND PROCEDURESFUNCTIONAL TEST
2011 Cadillac Escalade Base, AWD

Functional Test

2011 Cadillac Escalade Base, AWDSECTION Functional Test
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Functional Test

Step Action Yes No
The Functional Test Procedure is the first step in diagnosing mechanical or hydraulic transmission conditions. The Functional Test Procedure provides procedures and references to the symptom diagnosis table for specific diagnostic information.
1
IMPORTANT: Engine performance can strongly affect transmission performance. Ensure the condition is not the result of poor engine performance before continuing.
Verify the customer concern.Has the customer concern been verified?		 Go to Step 2  -
2
IMPORTANT: Many transmissions have default actions that take place once a DTC fault is detected. These actions may appear to be transmission concerns.
Perform the Diagnostic System Check - Vehicle .Did you perform the Diagnostic System Check - Vehicle?		 Go to Step 3  Go to Diagnostic System Check - Vehicle
3 Inspect for the following conditions:
Did you find a condition?		 Go to the appropriate repair or diagnosis section Go to Step 4 
4 Perform the Transmission Fluid Check .
Did you perform the Transmission Fluid Check  ?		 Go to Step 5  Go to Transmission Fluid Check 
5 Perform the Road Test .
Did the vehicle exhibit any objectionable performance condition?		 Go to Step 6  Go to Step 1 
6 Did the vehicle exhibit objectionable torque converter operation? Go to Step 15  Go to Step 7 
7 Did the vehicle produce any objectionable noise condition? Go to Symptoms - Automatic Transmission  Go to Step 8 
8 Did the vehicle exhibit a vibration condition? Go to Step 9  Go to Step 10 
9 Did the vibration occur only during torque converter clutch (TCC) apply or release? Go to Step 15  Go to Symptoms - Automatic Transmission 
10 Did the vehicle exhibit a shift speed condition, such as low or high shift speeds? Go to Symptoms - Automatic Transmission  Go to Step 11 
11 Inspect for the following unacceptable shift qualities:
  • Harsh, soft, delayed, or no engagement
  • Harsh, soft, or delayed shifts
  • Shift shudder, flare, or tie-up

Did the vehicle exhibit any of these shift quality conditions?		 Go to Step 12  Go to Step 13 
12 Perform the Line Pressure Check .
Is the line pressure within specification?		 Go to Symptoms - Automatic Transmission  Go to Symptoms - Automatic Transmission 
13 Inspect for the following unacceptable shift pattern conditions:
  • No upshift or downshift
  • Only 1 or 2 forward ranges
  • No first range, second range, third range, fourth range, or fifth range
  • Slipping
  • Non first range start

Did the vehicle exhibit any of these shift pattern conditions?		 Go to Symptoms - Automatic Transmission  Go to Step 14 
14 Inspect for the following unacceptable range performance conditions:
  • No PARK, REVERSE, or DRIVE
  • No engine braking
  • No gear selection
  • Incorrect gear selection

Did the vehicle exhibit any of these range performance conditions?		 Go to Symptoms - Automatic Transmission  System OK
15 Inspect for the following specific torque converter conditions or TCC conditions:
  • Stuck ON or Stuck OFF
  • Early or late engagement
  • Incorrect apply or release
  • Soft or harsh apply
  • Clunk or shudder
  • No torque multiplication
  • Excessive slip
  • Poor acceleration
  • Engine stalls

Did the vehicle exhibit any of these torque converter or TCC conditions?		 Go to Torque Converter Diagnosis  System OK
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.