Where is the fuel pump relay shown in this diagram?

Callout 5 in the legend is the fuel pump relay, located in the relay cluster mounted on the firewall near the cowl, next to the transmission kickdown relay (3) and the cold advance/transfer case relay (4).

What is callout 1 in the diagram?

Callout 1 is the fuel control in-line fuse, shown near the junction block (callout 2) at the firewall by connector C136.

What grounds are identified and how do they differ by engine?

The diagram labels G109 for gasoline engines and G106 for diesel engines at the same firewall ground location.

What does callout 4 identify?

Callout 4 is the cold advance relay or transfer case relay, depending on application.

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GM C/K Truck Engine Compartment Relay & Ground Location Diagram (LC0019-CK-E-RP)

GM C/K truck engine harness connector and relay location diagram fuel pump kickdown relays

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GM C/K pickup underhood harness routing diagram locating connectors C114/C120/C136 and relays: fuel control fuse, kickdown, cold-advance/transfer-case, and fuel pump relay.

AI caption April 2012 · Photo 66 of 66

This is an exploded-view component location diagram showing the engine-compartment wiring harness area at the firewall/cowl region of a vehicle, viewed with an arrow indicating the front of the vehicle. The illustration identifies grounds G109 (gasoline engines) and G106 (diesel engines), connectors C136, C123, C120, C184, and C114, and splices S114, S112, S126, S127, S119, and S131. Five numbered callouts are keyed to a legend identifying: (1) the fuel control in-line fuse, (2) the junction block, (3) the transmission kickdown relay, (4) the cold advance relay or transfer case relay, and (5) the fuel pump relay, all clustered on the firewall near the cowl. The diagram is identified by drawing number LC0019-CK-E-RP. A reader can use this figure to physically locate the fuel pump relay, junction block, relays, ground points, connectors, and harness splices in the engine compartment, and to distinguish which ground applies to gasoline versus diesel engines. No year, make, model, wire colors, fuse amperages, or part numbers are printed on the drawing itself.

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Frequently asked questions

Where is the fuel pump relay shown in this diagram?: Callout 5 in the legend is the fuel pump relay, located in the relay cluster mounted on the firewall near the cowl, next to the transmission kickdown relay (3) and the cold advance/transfer case relay (4).
What is callout 1 in the diagram?: Callout 1 is the fuel control in-line fuse, shown near the junction block (callout 2) at the firewall by connector C136.
What grounds are identified and how do they differ by engine?: The diagram labels G109 for gasoline engines and G106 for diesel engines at the same firewall ground location.
Which connectors and splices are labeled?: Connectors C136, C123, C120, C184, and C114, and splices S114, S112, S126, S127, S119, and S131 are labeled on the harness.
What does callout 4 identify?: Callout 4 is the cold advance relay or transfer case relay, depending on application.