SMU - Revised DTC P2135. Chevrolet Chevy Suburban

Subject:

Revised DTC P2135

Models:

2003 Cadillac Escalade, Escalade ESV, Escalade EXT

2003 Chevrolet Avalanche, Silverado, Suburban, Tahoe, TrailBlazer, TrailBlazer EXT

2003 Chevrolet W-Series Medium Duty Tilt Cab Models

2003 GMC Envoy, Envoy XL, Sierra, Sierra Denali, Yukon, Yukon XL, Yukon Denali

2003 GMC W-Series Medium Duty Tilt Cab Models

2003 HUMMER H2

This bulletin is being issued to revise Step 4 of DTC P2135 in the Engine Controls-4.8L, 5.3L and 6.0L sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.

The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.

Step 4 now includes the use of jumper wires.

Step	Action	Yes	No
4	Remove the air inlet duct from the throttle body. Disconnect the throttle body harness connector. Connect the jumper wires between the TP sensor terminals of the throttle body harness connector and the corresponding TP sensor terminals of the throttle body. Observe the TP sensor 1 and 2 with a scan tool. Slowly open the throttle blade to wide open throttle (WOT) and back to the closed throttle position several times by hand. Does the TP sensor Agree/Disagree parameter change from Agree to Disagree during the above test?	Go to Step 18	Go to Diagnostic Aids

Step

Action

Yes

Remove the air inlet duct from the throttle body.
Disconnect the throttle body harness connector.
Connect the jumper wires between the TP sensor terminals of the throttle body harness connector and the corresponding TP sensor terminals of the throttle body.
Observe the TP sensor 1 and 2 with a scan tool.
Slowly open the throttle blade to wide open throttle (WOT) and back to the closed throttle position several times by hand.

Does the TP sensor Agree/Disagree parameter change from Agree to Disagree during the above test?

Go to Step 18

Go to Diagnostic Aids