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1996 gmc automatic will not shift back to park

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Have u tried the nutural switch located near the tranny?

Posted on Oct 25, 2009

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My 2003 GMC ENVOY won't shift out of park


Automatic Transmission Shift Lock Control System
The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consists of the following components:
?€¢
The automatic transmission shift lock control solenoid


?€¢
The automatic transmission shift lock control switch

With the ignition in the ON position, voltage is supplied to automatic transmission shift lock control switch. Voltage flows through the normally closed contacts of the automatic transmission shift lock control switch to the automatic transmission shift lock control solenoid. The automatic transmission shift lock control solenoid is permanently grounded. This energizes the automatic transmission shift lock control solenoid causing the transmission shift lever to be physically locked in the PARK position. When the brake pedal is pressed the contacts in the automatic transmission shift lock control switch open, de-energizing the automatic transmission shift lock control solenoid. This allows the shift lever to be move out of the PARK position.
Shift Lever Does Not Move with Brake Pedal Depressed ?

2

  1. Turn ON the ignition.
  2. Press and hold the brake pedal.
  3. Attempt to move the shift lever out of the PARK position.
Does the shift lever move out of the PARK position?
Go to Testing for Intermittent Conditions and Poor Connections
Go to Step 3

3

  1. Turn OFF the ignition.
  2. Disconnect the automatic transmission shift lock control switch.
  3. Turn ON the ignition, with the engine OFF.
  4. Attempt to move the shift lever out of the PARK position.
Does the shift lever move out of the PARK position?
Go to Step 7
Go to Step 4

4

  1. Turn OFF the ignition.
  2. Leave the automatic transmission shift lock control switch disconnected.
  3. Connect a test lamp between the A/T shift lock control solenoid supply voltage circuit at the automatic transmission shift lock control solenoid and a good ground.
  4. Turn ON the ignition with the engine OFF.
Does the test lamp illuminate?

5

  1. Turn OFF the ignition.
  2. Connect a test lamp between the ignition 1 voltage circuit of the park lock solenoid and a good ground.
  3. Turn ON the ignition with the engine OFF.
Does the test lamp illuminate?
Go to Step 6
Go to Step 9

6

  1. Turn OFF the ignition.
  2. Connect a test lamp between the ignition 1 voltage circuit of the park lock solenoid and the park lock solenoid ground circuit.
  3. Turn ON the ignition with the engine OFF.
Does the test lamp illuminate?
Go to Step 8
Go to Step 11

7

Inspect for poor connections at the harness connector of the automatic transmission shift lock control switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 14
Go to Step 13

8

Inspect for poor connections at the harness connector of the park lock/automatic transmission shift lock control solenoid assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 14
Go to Step 12

9

Repair the open or high resistance in the park lock solenoid ignition 1 voltage circuit. Refer to Circuit Testing or Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 14
--

10

Repair short to battery positive voltage in the A/T shift lock control solenoid supply voltage circuit. Refer to Circuit Testing or Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 14
--

11

Repair the open or high resistance in the park lock solenoid ground circuit. Refer to Circuit Testing or Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 14
--

12

Important: Depress the button on the side of the shift lock actuator. With the button is depressed, cycle the plastic straw within the shift lever 3 to 5 times. The straw should move smoothly and freely except near the top of the travel where additional force will be required to mechanically actuate the park lock mechanism inside of the shift lock actuator. If there is stick/slip or abnormal friction while cycling the plastic straw or if the straw is altogether stuck in the lever, the entire control assembly (shifter and shift lock actuator) needs to be replaced. Refer to Transmission Control Replacement . If there is no abnormal friction, replace the shift lock actuator. Refer to Automatic Transmission Shift Lock Control Actuator Replacement .
Did you complete the replacement?
Go to Step 14
--

13

Replace the automatic transmission shift lock control switch. Refer to Stop Lamp Switch Replacement in Lighting Systems.
Did you complete the replacement?
Go to Step 14
--

14

Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2

Jul 09, 2016 | GMC Cars & Trucks

1 Answer

1988 gmc transmission diagram


it could be as simple as a solenoid in the transmission or a mechanical issue best to find a friend that works at a shop and maybe they can give you a break on the diagnostics

Aug 29, 2014 | 1988 GMC C2500

2 Answers

How do you adjust the shift cable on a 1995 gmc jimmy, wont go into reverse or park.


On the 1995 Jimmy, the shift cable can come loose on the mount on the side of the transmission where the cable meets the trans. When it slips, the alignment goes off and causes the driver to not be able to put the trans into park. If you take a long stick you can push the shift arm on the trans to the park position and your trans will go into park.....what you (and I) really need to know is how to take the shift cable mount apart and reset it.

Aug 05, 2012 | GMC Jimmy Cars & Trucks

1 Answer

How to properly engage and dis-engage 4 wheel drive 0n 1996 gmc sierra


  • Shifting from 2HI to 4HI Press and release the 4HI button. This can be done at any speed, and the front axle will lock automatically.

  • Shifting from 4HI to 2HI Press and release the 2HI button. This can be done at any speed, and the front axle will unlock automatically.

  • To shift from 2HI or 4HI to 4LO, the vehicle must be stopped or moving less than 3 mph with the transmission in NEUTRAL

  • Hope this helps.

Oct 29, 2011 | 1996 GMC Sierra

2 Answers

My 1996 chevy blazer 6 cyl,4.3 vortec motor 4x4,automatic transmission sticks in park when on an incline,and is tough to shift back to park from reverse even on flat terrain,I have to rock the blazer to...


Sounds like you may have damaged the parking claw. Put the parking brake on when you park on an incline, You may need a new parking gear or gear claw.

May 18, 2010 | 1996 Chevrolet Blazer

1 Answer

1996 gmc sierra k1500 4x4 automatic 5.0 v8. having


Park fork is probably damaged, take a trip to a trans shop like aamco.

Feb 25, 2010 | GMC K1500 Cars & Trucks

1 Answer

GMC 1500 Auto, will not shift back into park?


Climb under your pickup and look where the cable connects to the side of the transmission and make sure there is not any mud around the cable or around the shift linkage hookup. If so clean it off and see if it will shift. We have found many of these with mud caked around the shift linkage or a lot of ice buildup and wont allow it to shift into park.

Dec 10, 2009 | 2000 GMC New Sierra 1500

1 Answer

1996 gmc jimmy wont shift into park stops at neutral its a manual tansmission


a manual transmission don't have park i am assuming you have a automatic trans in vehicle and maybe the park interlock is not working properly check fuses 1st

Sep 08, 2009 | 1996 GMC Jimmy

1 Answer

1996 Audi A4 2.8L will not shift into reverse or park


You need a new inhibitor switch on the gear selector.

Dec 13, 2008 | 1996 Audi A6

2 Answers

Gear shift lever wont go into park; there's no problem with transmission or fluid vehicle works fine but i cannot get the shift lever to go into park, also i can remove the key while its in the reverse...


I have a Dodge Charger 06 model and the gear wont move from Park to reverse. everything else works as far as gas, brake light, etc but my gear wont shift can i get soem help

Nov 05, 2008 | 1996 GMC Jimmy

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