Engine Oil Pan Removal - v6 GMC Pickup R1500

2WD "S" Series Models

1. Disconnect negative battery cable. Drain engine oil and cooling system. Remove engine. Remove oil pan attaching hardware. Remove oil pan. Clean all gasket mating surfaces and straighten sealing flange.
2. When installing, apply thin coat of RTV sealer to entire oil pan sealing flange. Align holes of gasket on block and install oil pan.

4WD "S" Series Models

1. Disconnect negative battery cable and drain engine oil. Raise vehicle to remove drive belt splash, front axle and transfer case shields. Disconnect brake lines at crossmember. Remove No. 2 crossmember.
2. Disconnect exhaust pipes at manifold and slide rearward. On automatic transmission models, remove converter hanger bolts. Disconnect front drive shaft at drive pinion.
3. Disconnect engine braces at flywheel cover and loosen braces at block. Remove starter and flywheel cover. Disconnect steering damper at frame bracket. Remove steering gear bolts.
4. Mark position of idler arm location for reinstallation and remove attaching bolts. Pull steering gear and linkage forward. Remove front differential housing mounting bolts and move housing forward.
5. Remove motor mount through bolts. Remove oil pan retaining bolts. Raise engine. Remove oil pan. Clean all gasket mating surfaces and straighten sealing flange.

Astro & Safari Models

1. Disconnect negative battery cable. Raise and support vehicle. Drain engine oil. Disconnect exhaust pipes at manifolds. Remove engine strut rod brackets at engine mounts (if equipped).
2. Remove inspection cover. Remove starter (if necessary) and set aside. Remove oil pan nuts, bolts and reinforcement hardware. Separate oil pan and gasket from engine. Clean all gasket mating surfaces and straighten flange.

Scheme 31

All Other Models

1. Disconnect negative battery cable. Raise vehicle and drain engine oil. Disconnect exhaust crossover pipe at manifolds. Remove engine strut rod brackets at engine mounts (if equipped). On 4WD pickup models with automatic transmission, remove strut rods at motor mounts.
2. Remove inspection cover. Remove starter and engine mount trim bolts. Remove oil pan hardware and separate pan from engine. Clean all gasket mating surfaces.