Service Procedure
Service Procedure1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
2. Locate the fuel tank EVAP emissions canister (1) and fuel tank EVAP vapor line connection (2).
3. Disconnect the 16 mm (5/8 in) quick connect vapor line (2) from the front of EVAP emissions canister (1).
4. Identify all parts included in the EVAP jumper hose assembly kit. The kit contains two EVAP jumper hoses and three tie straps. There is a large diameter 16 mm (5/8 in) EVAP jumper hose (1) with a 45 degree T-fitting (2) and a small diameter 8 mm (5/16 in) EVAP jumper hose with a T-fitting (3).
5. Connect the new 16 mm (5/8 in) EVAP jumper hose (larger diameter hose) (2) to the EVAP emissions canister (1).
6. Install the second piece of the new 8 mm (5/16 in) jumper hose (smaller diameter hose) (3) to the 45 degree T-fitting on the new 16 mm (5/8 in) EVAP jumper hose (2). Ensure that the new 8 mm (5/16 in) jumper hose (3) is installed between the new 16 mm (5/8 in) EVAP jumper hose (2) and floor pan.
7. Insert the non-connector end of the 16 mm (5/8 in) EVAP jumper hose (larger diameter hose) (2) into the existing EVAP vapor line (4).
8. Secure the new jumper hose assembly with a tie strap (6) through the hole in brake clip (5) on LH underbody rail. Avoid contacting the brake or fuel line with the tie wrap.
9. Cut off excess tie strap (6).
10. Route the 8 mm (5/16 in) hose (3) on top of the fuel feed line on the left (driver's) side of the fuel tank assembly.
11. Continue routing the 8 mm (5/16 in) hose (3) through the suspension on the front side of the underbody rail and behind the tank and all-wheel drive unit. Follow the path of the park brake cable. The 8 mm (5/16 in) line should be routed on top of the park brake cable routing.
12. Disconnect the existing EVAP-to-fuel tank vapor line (yellow connector) located on the rear right (passenger side) of vehicle at the fuel tank.
13. Connect the new 8 mm (5/16 in) hose (3) to the fuel tank.
14. Connect the existing EVAP hose to the T-fitting on the new 8 mm (5/16 in) hose.
Caution
Ensure that the 8 mm (5/16 in) hose (3) is tucked in over the park brake cable to prevent the hose from sagging over the fuel tank cutout area.
15. Secure the 8 mm (5/16 in) hose (3) to the parking brake line at the left (driver's) (A) and right (passenger' side) (B) fuel tank strap locations (9) with two tie straps (8) as shown in the illustration.
16. Lower the vehicle.
17. Determine if the vehicle is equipped with a four or six cylinder engine.
- If the vehicle is equipped with a four cylinder engine, no further action is required. Refer to the Claim section of the bulletin.
- If the vehicle is equipped with a six cylinder engine, refer to ECM Programming Service Procedure in this bulletin.
ECM PROGRAMMING SERVICE PROCEDURE
Do not attempt to order the calibration number from GMSPO. The calibration numbers required for this service procedure are programmed into control modules via a Multiple Diagnostic Interface (MDI) and TIS2WEB with the calibration update. Use TIS2WEB on or after 01/07/10 to obtain the calibration. If you cannot access the calibration, call the Techline Customer Support Center and it will be provided. If programming stops prior to completion, contact Engineering at 734-320-8123. Do NOT attempt to reprogram.
For step-by-step programming instructions, please refer to SI and the Techline Information System (TIS) terminal.
1. Verify that there is a battery charge of 12 to 16 volts. The battery must be able to maintain a charge during programming. Only use an approved Midtronic 165-PSC charger to maintain proper battery voltage during programming.
2. Reprogram the engine control module (ECM). Refer to SI and Service Programming System (SPS) documentation for programming instructions, if required.
1. Connect the MDI to the vehicle.
Note
Select J2534 MDI and Reprogram ECU from the Select Diagnostic Tool and Programming Process screen.
2. Select J2534 MDI and Reprogram ECU from the Select Diagnostic Tool and Programming Process screen.
3. Select ECM Engine Control Module - Programming from the Supported Controllers screen.
4. Follow the on-screen instructions.
3. Use MDI and GDS to clear all DTCs if required.