SMU - Revised DTC P0122. Chevrolet Chevy Suburban

Subject:

Revised DTC P0122

Models:

1996-1997 Chevrolet Astro, Blazer, C/K Pickup, Express, S-10 Pickup, Suburban, Tahoe

1996-1997 GMC C/K Pickup, Jimmy, Safari, Savana, Sonoma, Suburban, Yukon

with 4.3L, 5.0L, 5.7L, or 7.4L Engine (VINs W, X, M, R, K, N, J -- RPOs L35, LF6, L30, L31, LO5, L19, L29)

This bulletin is being issued to revise Step 3 of DTC P0122 in the Engine Controls 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.

As shown below, the Yes column in Step 3 should be "Go to Step 12". The circuit that is jumpered in Step 3 is the TP sensor signal circuit.

Step	Action	Values	Yes	No
3	Disconnect the TP sensor. Jumper the TP sensor signal circuit and the TP sensor 5 volt reference circuit together. Does the scan tool display a throttle position signal greater than the specified value?	4.0 Volts	Go to Step 12	Go to Step 4

Step

Action

Values

Yes

Disconnect the TP sensor.
Jumper the TP sensor signal circuit and the TP sensor 5 volt reference circuit together.

Does the scan tool display a throttle position signal greater than the specified value?

4.0 Volts

Go to Step 12

Go to Step 4