Your codes are as follows:
E26 - Shorted Throttle Switch Circuit
F11 A/C High Side Temperature Circuit Problem
F48 Very Low A/C Refrigerant Pressure Condition
I always suggest when a car is this age to note the codes and erase. Code E26 for example indicates a short condition which may or may not be a continuing problem. If you have a persistent code it should be attended to. The AC codes are obvious, you have a leak.
I also suggest making sure your gas cap is properly sealing, #1 cause of check engine light.
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1998 Deville D'Elegance - LD8 32v Northstar V8 (Sold July 9, 2011 with 225,000 km)
1993 Fleetwood - L05 5.7 TBI V8 (Sold July 18, 2012 with 308,000 km)
1999 GMC Suburban SLT- 5.7 Vortec
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Last edited by Katzmans Caddy; 02-21-2009 at 12:43 AM.