2008 GMC Truck C-Series Topkick Conventional C4/C5

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2008 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

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

Multi-step torque procedures OEM · verified

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

74 ft. lbs., step 2: 100 ft. lbs., step 3: 105 degrees.

74 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

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN

Decode a VIN to confirm the transmission and build data for a specific C-Series Topkick Conventional C4/C5. OEM

Build data

Plant, GVWR class, engine and body data for any 17-character VIN.

Recalls

Check open recall campaigns against a specific vehicle by VIN.

Reference guides

Cross-vehicle references for the kinds of data on this page.

OBD-II trouble codes Torque specifications