Fuel Gauge Always Indicates Full Gas
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important:: Before performing the diagnostics below, perform a diagnostic circuit check and repair DTC's P0461, P0462, or P0463 pertaining to the fuel tank senders. | ||||
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | |
2 |
Is the resistance greater than the value given? | 0.5ohms | Go to Step 3 | Go to Step 4 |
3 | Locate and repair the open or cause of resistance in CKT 30 (PPL) between VCM connector C1 and the IP Cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
4 | Replace the I/P Cluster. Refer to Instrument Cluster Replacement . Is the repair complete? | -- | -- | |
Fuel Gauge Always Indicates Full Diesel
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | |
2 |
Does the fuel gauge read empty? | -- | Go to Step 6 | Go to Step 3 |
3 | Connect a J 39200 DMM (ohms) between cavities A & B of the Fuel Pump and Sender. Does the resistance read according to the fuel level? | 0 ohms Empty/90 ohms Full | Go to Step 4 | Go to Step 6 |
4 |
Does the resistance read according to fuel level? | 0 ohms Empty/90 ohms Full | Go to Step 5 | Go to Step 7 |
5 | Replace the I/P Cluster. Refer to Instrument Cluster Replacement Is the repair complete? | -- | -- | |
6 | Replace the Fuel Pump and Sender. Refer to Fuel Sender Assembly Replacement in Engine Controls, 1999 C/K Service Manual. Is the repair complete? | -- | -- | |
7 | Locate and repair the open in CKT 30 (PPL) between the I/P Cluster and Fuel Pump and Sender. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- |
