Forum | Marketplace | Knowledge Base | | H1 site | H2 site | H3 site
Click Here To Visit Plan B Supply
Click Here To Visit Plan B Supply
Click Here To Visit Hummercore
Click Here To Visit Hummercore
Click here for a listing of all HUMMER Network sponsors

Hummer Knowledge Base

The Hummer Knowledge Base

Description and Troubleshooting of Electronic Throttle:

Does anyone know exactly where the cable that leads from the gas pedal terminates? I'm guessing that it's one of the connectors on top of the engine, but which one exactly? Then I can check for a wire fault.


The accelerator pedal goes directly to the PCM module.

Conn-C1PCM Conn/PinColorCircuit
44C29-A12PPAPP2 Ground (722)
53C29-B1BRAPP1 Ground (719)
17C29-B2DBAPP1 Signal (718)
32C27-C5LBAPP2 SIgnal (721)
60C27-D6GYAPP3 Ground (725)
15C27-D4DGAPP3 Signal (724)
14C27-D2YLAPP3 +5V Reference (723)
20C27-D12WHPP1 +5V Reference (717)
22C28-C2TNAPP2 +5V Reference (720)

As you can see, they are spread across three connectors (failsafe!) and each has a dedicated ground, and +5V reference.

DO the following tests:

1. Check on the accelerator unit:

D, G & E - Should all have +5V
A, B & J - Should have a ground
C, F & K - Should vary voltage from ground, to +5V reference.

The signals are also routed through connector C1, as shown above.

This information is for MY 2000 Turbo Diesel Hummers.

Peter H.

Back to main page

The Hummer Knowledge Base is a collection of informative posts from the Hummer Network forums and mailing lists, contributed material and links to outside web sites.
The Hummer Network is not responsible for the accuracy of the information contained herein or on outside web sites, nor for any situation arising from the use thereof.
2006-2011 by The Hummer Network. No material from the Hummer Knowledge Base may be reprinted or republished in any form without permission.