docs: Add fuel filter part number and eBay links

- GM OEM part #88915445 documented
- Aftermarket equivalents listed (ACDelco PF-1236, WIX 33138, Fram PH3600)
- Fuel line disconnect tool recommended for installation
- eBay links added for cheapest options

FuelPressureIssue/issue-fuel-pressure.md

@@ -42,10 +42,13 @@
    - Aftermarket: $150-250
    - OEM: $300-400
    - Labor: 2-3 hours (if professional), 1-2 hours DIY
-2. **Replace fuel filter** - Has NEVER been changed, probably 50,000+ miles on it
-   - Cost: $15-25
-   - Easy DIY job, 15-30 minutes
-   - Recommended to do with fuel pump replacement
+2. **Replace fuel filter** - Has NEVER been changed, 50,000+ miles on original
+   - **OEM GM Part #**: 88915445
+   - **Aftermarket equivalents**: ACDelco PF-1236, WIX 33138, Fram PH3600
+   - **Cost**: ~$8-20
+   - **Time**: 15-30 minutes
+   - **Tools needed**: 13mm socket, fuel line disconnect tool (recommended)
+   - **WARNING**: Relieve fuel pressure before disconnecting!
 3. **Verify repair:** After replacement, should see 55+ PSI on first prime
 
 ## Updated Diagnosis
@@ -66,3 +69,5 @@
 - **This may be the underlying issue that caused the original no-start**
 - **Distributor problem was coincidental** - fuel system was already failing
 - **Parts sourcing:** Use local auto parts store with VIN lookup for correct pump and filter
+- **Fuel filter part #**: 88915445 (GM OEM) - see eBay links below
+- **Fuel line disconnect tool**: Recommended for easy installation, prevents damage to lines