1991 GMC C2500 | Sierra, Sierra SLE, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
Notes: with OE # 1228934;The PROM(s)/CALPACK must be transferred from the original module to the replacement module;Additional relearns (theft, crankshaft, idle, etc) may be required
Notes: The PROM(s)/CALPACK must be transferred from the original module to the replacement module;Additional relearns (theft, crankshaft, idle, etc) may be required;with OE # 16147060
Notes: The PROM(s)/CALPACK must be transferred from the original module to the replacement module;Additional relearns (theft, crankshaft, idle, etc) may be required;with OE # 1228747
Notes: Additional relearns (theft, crankshaft, idle, etc) may be required;with OE # 1227747;The PROM(s)/CALPACK must be transferred from the original module to the replacement module
Notes: The PROM(s)/CALPACK must be transferred from the original module to the replacement module;Additional relearns (theft, crankshaft, idle, etc) may be required
Notes: The PROM(s)/CALPACK must be transferred from the original module to the replacement module;with OE # 16144288;Additional relearns (theft, crankshaft, idle, etc) may be required
1991 GMC C2500 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS