2007 GMC Truck C-Series Topkick Conventional C4/C5

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2007 C-Series Topkick Conventional C4/C5.

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

Torque the oil drain plug to 21.0 ft-lbs.

Engine torques

Crankshaft Pulley and/or Damper Bolts	189 ft-lbs
Intake Manifold to Engine Bolts	Right: 15 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	28 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	Bolts: 26 ft-lbs, Nuts: 12 ft-lbs
Engine Oil Pan Drain Plug	62.0 ft-lbs
Engine Oil Pan Drain Plug	21.0 ft-lbs

Battery & A/C

Refrigerant	R134a
Refrigerant Capacity	2.13 lbs
Oil Group	PAG
Oil Type	46
Oil Capacity	8.00 oz

Service checks

Key ON Engine OFF (KOEO)	56-62
Injector Primary Resistance	11-14 @ 50-90 degreesF ohms

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages

74 ft. lbs., step 2: 105

74 ft. lbs

Intake Manifold to Engine Bolts — tightening sequence 1 stages

3.7 ft. lbs., step 2: 5.9 ft. lbs., Step 3: 8.8

3.7 ft. lbs

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420

Catalyst system efficiency below threshold — Bank 1

P0300

Random / multiple cylinder misfire detected

P0171

System too lean — Bank 1

P0455

Evaporative emission system leak detected — large leak

P0128

Coolant thermostat below regulating temperature

P0442

Evaporative emission system leak detected — small leak

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